2C18 PDA 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014
2C19 HEDI 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014
2C20 Rapid Tools 2020 | 2019 | 2018 | 2017 | 2016
2C21 Rapid Inspection 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014
2C22 DFM 2020 | 2019 | 2018 | 2017
2C23 AFP Model 2020 | 2019 | 2018 | 2017 | 2016
2C24 Closed-Loop Control 2019 | 2018
2C25 Sandwich Model 2020 | 2019 | 2018 | 2017 | 2016
2C26 Bonding 2020 | 2019 | 2018 | 2017 | 2016 | 2015
2C27 Laminate Cure Model 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014
2C18 PDA
2020 (2C18 PDA)
A Benchmark Example for Delamination Growth Predictions Based on the Single Leg Bending Specimen under Fatigue Loading
Ronald Krueger, Lyle Deobald, Haozhong Gu
Published in 2020
Benchmarking Enhanced VCCT-based Interlaminar Fatigue and Progressive Failure Finite Element Analysis — PRELIMINARY
Lyle R. Deobald, Gerald E. Mabson, Das Ramnath, Haozhong Gu, Zhenning Hu, Steve Engelstad, Vivian Johnson, Vijay Goyal, M. Prabhakar Rao, Shenal Perera, Mark Lobo, D.M. Hoyt
Published in 2020
Automated Assessment of the Influence of AFP-Induced Defects
Pierre Chevalier, Brian Tatting, Zafer Gurdal
Published in June 2020
Computer Aided Process Planning for Automated Fiber Placement
Joshua Halbritter, Ramy Harik
Published in May 2020
An Investigation on the Accuracy of Delamination Analysis Predictions for Unidirectional Laminate Configurations
Patrick Enjuto, Gerald E. Mabson, Hangki Lee, Ronald Krueger, James G. Ratcliffe
Published in January 2020
Evaluation of BSAM (B-Spline Analysis Method) Using Three-Point Bend Doubler Under Quasi-Static and Cyclic Loading
Alex Selvarathinam, Shenal Perera, Garrett Smith, Joe Schaefer, Will Johnston, Wade Jackson, Cheryl Rose
Published in January 2020
Progressive Damage Analysis of a Multi-Stringer Post-Buckled Panel
Jason Action, Frank Leone, Nelson V. De Carvalho
Published in January 2020
Progressive Damage Analysis of Post-Buckled Stiffened Panels under Static Compressive Loading
Frank A. Leone, Kyongchan Song, Cheryl A. Rose, Wade C. Jackson
Published in January 2020
Progressive Damage Failure Analysis of a Multi-Stringer Post-Buckled Panel
Jason Action, Frank A. Leone
Published in January 2020
Quasi-static and Fatigue Delamination at Tape/Fabric Interfaces
Carlos G. Davila, James G. Ratcliffe
Published in January 2020
Single Stringer Analysis (CompDam ad FNM)
Frank Leone, Song, Cheryl Rose, Wade Jackson
Published in January 2020
Testing of a Multi-Stringer Post-Buckled Panel
Jason Action, Upul Palliyaguru, Wade Jackson, Joe Zalameda
Published in January 2020
Testing of a Multi-Stringer Post-Buckled Panel with Incremental Damage Detection
Jason Action, Upul Palliyaguru, Wade Jackson, Joseph Zalameda
Published in January 2020
Computational Considerations in Scaling the Application of Progressive Damage Analysis Methods from Coupons to Sub-Components
Andrew C. Bergan, Frank A. Leone Jr., Stewart Boyd, Imran Hyder, Joseph D. Schaefer
Published in September 2019
Computational Considerations in Scaling the Application of Progressive Damage Analysis Methods from Coupons to Sub-Components
Andrew C. Bergan, Frank A. Leone, Stewart Boyd, Imran Hyder, Joseph D. Schaefer
Published in September 2019
Test/Analysis Correlation of Damage States in Stiffened Post-Buckled Validation Building Block Specimens
Leone, F.A.; Song, K.; Rose, C.A.; Jackson, W.C.; Davila, C.G.
Published in September 2019
Damage Mechanisms in Tapered Composite Structures under Static and Fatigue Loading
Prabhakar M. Rao, Mark R. Gurvich, Upul R. Palliyaguru, Waruna Seneviratne
Published in June 2019
A Benchmark Example for Delamination Growth Predictions Based on the Single Leg Bending Specimen under Fatigue Loading
Ronald Krueger, Lyle Deobald, Haozhong Gu
Published in June 2019
Fatigue Life Prediction of Rotor Spars by Using Discrete Damage Modeling
Endel V. Iarve, Kevin H. Hoos, Hari K. Adluru, J. Scott McQuien, Yu-Jui Liang
Published in May 2019
A New Approach to Model Delamination Growth in Fatigue Using the Virtual Crack Closure Technique without Re-meshing
N. V. De Carvalhoa, G.E. Mabsonb, R.Kruegera, L.R. Deobald
Published in April 2019
Evaluation of Progressive Damage Analysis Methods for Damage Predictions in Stiffened Composite Structure
Leone, F.A.; De Carvalho, N.; Rose, C.A.
Published in April 2019
Estimation of Delamination Crack Depth Using Passive Thermography
Joseph N. Zalameda, Wade C. Jackson, Cheryl A. Rose
Published in April 2019
The Long Road to Virtual Testing of Composite Structures – Are we there yet?
Carlos G. Davila
Published in April 2019
Verification and Validation Process for Progressive Damage and Failure Analysis Methods in the NASA Advanced Composites Consortium
Joseph D. Schaefer, Brian Justusson, Imran Hyder & Steve Wanthal
Published in March 2019
Computational Performance of Progressive Damage Analysis of Composite Laminates using Abaqus/Explicit with 16 to 512 CPU Cores
A. C. Bergan
Published in February 2019
An Experimental Investigation Concerning the Effects of AFP Defects on Progressive Failure of Tensile Coupons
Rafal Anay, Paul Ziehl, Addis Tessema, Roudy Wehbe, Lateef Assi, Addis Kidane, Ramy Harik, Brian F. Tatting, Zafer Gurdal
Published in January 2019
Validation of Floating Node Method Using Three-Point Bend Doubler Under Quasi-Static Loading
Alex S. Selvarathinam, Nelson V. De Carvalho, Banavara R. Seshadri, Vivian Johnson, William M. Johnston, Wade C. Jackson, Cheryl Rose, Thomas K. O’Brien
Published in January 2019
Modeling Fiber Kinking at the Microscale and Mesoscale
Miguel Herraez, Andrew C. Bergan, Carlos Gonzalez, Claudio S. Lopes
Published in October 2018
A Cohesive Fatigue Model based on the S-N Diagram
C Davila
Published in September 2018
Study of Skin-Stringer Separation in Postbuckled Composite Aeronautical Structures
L Kootte, C Bisagni, C Davila, V Ratanunga
Published in September 2018
Validation of a Mesoscale Fiber Kinking Model through Test and Analysis of Double Edge Notch Compression Specimens
Andrew C. Bergan and Wade C. Jackson
Published in September 2018
A Benchmark Example for Delamination Propagation Predictions Based on the Single Leg Bending Specimen under Quasi-static and Fatigue Loading
Ronald Krueger, Lyle Deobald, Haozhang Gu
Published in September 2018
An Engineering Approach to Analyze Damage Initiation Modes in Tapered Composite Structures
Prabhakar M. Rao, Mark R. Gurvich, Upul Palliyaguru, Waruna Seneviratne
Published in September 2018
Benchmarking Mixed Mode Matrix Failure in Progressive Damage and Failure Analysis Methods
Frank A. Leone, Madhavadas Ramnath, Imran Hyder, Joseph D. Scahefer, Matthew G. Pike, Gerald E Mabson
Published in September 2018
Implementation of a Matrix Crack Spacing Parameter in a Continuum Damage Mechanics Finite Element Model
Imran Hyder, Frank A. Leone, Brian P. Justusson, Joseph D. Schaefer, Andrew Bergan, Steve Wanthal
Published in September 2018
Quantification of Error Associated with Using Misaligned Meshes in Continuum Damage Mechanics Material Models for Matrix Crack Growth Predictions in Composites
Brian Justusson, Imran Hyder, Steward Boyd, Frank Leone
Published in September 2018
The Evaluation of Strength-Dominant to Fracture-Dominant Failure Transition for Mode II Crack Growth
Imran Hyder, Brian P. Justusson, Joseph D. Schaefer, Matt Pike, Frank A. Leone, Andrew Bergan
Published in September 2018
VCCT with Progressive Nodal Release for Simulating Mixed-Mode Delamination: Formulation, Algorithmic Improvements and Implications
Gerald Mabson, Nelson De Carvalho, Ronald Krueger
Published in September 2018
Numerical Analysis of Skin-Stiffener Separation Using a Seven Point Bend Configuration
C Kosztowny, C Davila, K Song, C Rose, W Jackson
Published in August 2018
Characterization of Damage Formation in a Composite Single Stringer Hat Stiffened Panel Using Passive Thermography
J. Zalameda, W. Winfree, and M. Horne
Published in July 2018
Detection of Damage During Quasi-Static Loading of a Single Stringer Panel Using Passive Thermography and Acoustic Emission
J. Zalameda, W. Winfree, and M. Horne
Published in June 2018
From S-N to the Paris Law with a New Mixed-Mode Cohesive Fatigue Model
Carlos G. Davila
Published in June 2018
Rapid Tools for an AFP Manufacturing Defects Assessment Framework
Luis G. Bahamonde Jacome, Mazen A. Albazzan, Pierre L. Chevalier, Zafer Gurdal, Brian F. Tatting, Ramy Harik
Published in May 2018
Real Time Detection of Damage During Quasi-Static Loading of a Single Stringer Panel using Passive Thermography
Joseph Zalameda and Michael Horne
Published in April 2018
Development of a Verification and Validation Approach for Composite Progressive Damage and Failure Analysis Methods
Brian Justusson, Joseph Schaefer, Imran Hyder, Steve Wanthal, Alex Selvarathinam, Jason Action, Steve Engelstad, Frank Leone, Cheryl Rose, Carlos Davila
Published in April 2018
Analysis of Progressive Damage in Cross-Ply and Quasi-Isotropic Panels Subjected to Quasi-Static Indentation
K. Song, Frank A. Leone, Cheryl A. Rose
Published in January 2018
Continuum Damage Mechanics Models for the Analysis of Progressive Damage in Cross-Ply and Quasi-Isotropic Panels Subjected to Static Indentation
Kyongchan Song, Frank Leone, Cheryl Rose
Published in January 2018
Development of a Mesoscale Finite Element Constitutive Model for Fiber Kinking
A. Bergan, M. Herraez, C. Gonzalez, C. Lopes
Published in January 2018
Near Real-Time Probabilistic Damage Diagnosis Using Surrogate Modeling and High Performance Computing
James E. Warner, Mohammad Zubair, Desh Ranjan
Published in January 2018
A Dual Spring Modeling Approach for Static and Fatigue Failure Assessments of Carbon/Epoxy Composite Sub-Elements
Xiaodong Cui, Xiang Ren, Phillip Liu, Jim Lua, Prabhakar Rao, Matthew Mordasky, Mark Gurvich
Published in January 2018
Simulating the Clamped Tapered Beam Specimen Under Quasi-Static and Fatigue Loading using Floating Node
B.R. Sescadri, N. de Carvalho, J.G. Ratcliffe, Gerald E. Mabson, Lyle Deobald
Published in January 2018
Validation of a Discrete Damage Mechanics Methodology Using the Static and Fatigue Behavior of Carbon/Epoxy Tapered Specimens
Prabhakar M. Rao, Matthew D. Mordasky, Mark R. Gurvich, Nelson De Carvalho, Banavara Seshadri, James G. Ratcliffe
Published in January 2018
Assessment of Intralaminar Progressive Damage and Failure Analysis Methods Using an Efficient Evaluation Framework
Imran Hyder, Joseph D. Schaefer, Brian P. Justusson, Steven Wanthal, Frank A. Leone, Cheryl A. Rose
Published in October 2017
In-Situ Observations of Longitudinal Compression Damage in Carbon-Epoxy Cross Ply Laminates Using Fast Synchrotron Radiation Computed Tomography
Andrew Bergan and Serafina Garcea
Published in October 2017
Material Characterization for the Analysis of Skin/Stiffener Separation
Carlos G. Dávila, Frank Leone, Kyong Song, James Ratcliffe, Cheryl Rose
Published in October 2017
Microscale Investigation of Transverse Tensile Failure of Fiber-Reinforced Polymer Composites
Caitlin M. Arndt, Jacob D. Hochhalter, Nelson V. De Carvalho, Michael W. Czabaj
Published in October 2017
Predicting Skin/Stiffener Separation in Three-Point Bend Specimens
Frank Leone, Nelson De Carvalho, Kyong Song, Carlos G. Dávila, Wade Jackson, William Johnston, Cheryl Rose
Published in October 2017
Simulating Matrix Crack and Delamination Interaction in a Clamped Tapered Beam
N.V. de Carvalho, B.R. Seshadri, L.R. Deobald, G.E. Mabson, J.G. Ratcliffe and T.K. O’Brien
Published in October 2017
Verification and Validation of Progressive Damage Analysis Methods for Explicit Analysis of Progressive Delamination
Alex Selvarathinam, Jason Action, Brian Justusson
Published in October 2017
Verification and Validation Process for Progressive Damage and Failure Analysis Methods in the NASA Advanced Composites Consortium
Steven Wanthal, Joseph Schaefer, Brian Justusson, Imran Hyder, Stephen Engelstad, Cheryl Rose
Published in October 2017
Guidelines for VCCT-based Interlaminar Fatigue and Progressive Failure Finite Element Analysis
Lyle R. Deobald, Gerald E. Mabson, Steve Engelstad, M. Prabhakar Rao, Mark Gurvich, Waruna Seneviratne, Shenal Perera, T. Kevin O’Brien, Gretchen Murri, James Ratcliffe, Carlos Davila, Nelson Carvalho, Ronald Krueger
Published in September 2017
Multiscale Fiber Kinking: Computational Micromechanics and a Mesoscale Continuum Damage Mechanics Models
Miguel Herráez, Andrew Bergan, Carlos González, Claudio Lopes
Published in September 2017
Damage Simulation in Composite Materials: Why It Matters and What Is Happening Currently at NASA in This Area
McElroy, Mack; de Carvalho, Nelson; Estes, Ashley; Lin, Shih-yung
Published in August 2017
Searching for Run-Time Efficient Approaches to Delamination Growth Predictions in Composites
R. Krueger, N. V. de Carvalho, and M. Sasdelli
Published in June 2017
Fatigue Life and Damage Tolerance of Postbuckled Composite Stiffened Structures with Indentation Damage
Dávila, C. G., and Bisagni, C.,
Published in June 2017
Fatigue Life and Damage Tolerance of Postbuckled Composite Stiffened Structures with Initial Delamination
Davila, Carlos G.; Bisagni, Chiara
Published in Febuary 2017
Fracture-Based Mesh Size Requirements for Matrix Cracks in Continuum Damage Mechanics Models
Leone, Frank A.; Davila, Carlos G.; Mabson, Gerald E.; Ramnath, Madhavadas; Hyder, Imran
Published in January 2017
Near Real-Time Probabilistic Damage Diagnosis Using Surrogate Modeling and High Performance Computing
Warner, James E.; Zubair, Mohammad; Ranjan, Desh
Published in January 2017
Establishing Mesh Size Requirements for the Prediction of Matrix Cracks in Continuum Damage Mechanics Models
Leone FA, Davila CG, Mabson GE, Madhavadas R, Hyder I
Published in 2016
Modeling Fatigue Damage Progression and Onset in Composites Using an Element-Based Virtual Crack Closure Technique Combined with the Floating Node Method
N. Carvalho and R. Krueger
Published in 2016
A Computationally-Efficient Inverse Approach to Probabilistic Strain-Based Damage Diagnosis
Warner, James E.; Hochhalter, Jacob D.; Leser, William P.; Leser, Patrick E.; Newman, John A
Published in October 2016
A biaxial-bending test to observe the growth of interacting delaminations in a composite laminate plate
M. McElroy, W. Jackson, M. Pankow
Published in September 2016
A Continuum Damage Mechanics Model to Predict Kink-Band Propagation Using Deformation Gradient Tensor Decomposition
Bergan, A. C., and Leone Jr., F. A.,
Published in September 2016
A Modified Edge Crack Torsion Test for Measurement of Mode III Fracture Toughness of Laminated Tape Composites
Czabaj, M.W., Davidson, B.D., and Ratcliffe, J.G.,
Published in September 2016
In Search of a Time Efficient Approach to Crack and Delamination Growth Predictions in Composites
Ronald Krueger and Nelson Carvalho
Published in September 2016
Plasticity Tool for Predicting Shear Nonlinearity of Unidirectional Laminates under Multiaxial Loading
Wang, J., and Bomarito, G.
Published in September 2016
A Mode I cohesive law characterization procedure for through-the-thickness crack propagation in composite laminates
Bergan, A., Dávila, C., Leone, F., Awerbuch, J., and Tan, T.-M.,
Published in June 2016
An enriched shell finite element for progressive damage simulation in composite laminates
Mark W. McElroy
Published in June 2016
Fatigue Life of Postbuckled Structures with Indentation Damage
Dávila, C. G., and Bisagni, C.,
Published in June 2016
Large Area Nondestructive Evaluation of a Fatigue Loaded Composite Structure
Zalameda, Joseph N.; Burke, Eric R.; Horne, Michael R.; Madaras, Eric I.
Published in June 2016
Combining Passive Thermography and Acoustic Emission for Large Area Fatigue Damage Growth Assessment of a Composite Structure
Zalameda, Joseph N.; Horne, Michael R.; Madaras, Eric I.; Burke, Eric R.
Published in April 2016
Face Sheet/Core Disbonding in Sandwich Composite Components: A Road Map to Standardization: Test Method Development
Ratcliffe, James; Krueger, Ronald
Published in March 2016
Facesheet/Core Disbond Growth in Honeycomb Sandwich Panels Subjected to Ground-Air-Ground Pressurization and In-Plane Loading
Chen, Zhi M.; Krueger, Ronald; Rinker, Martin
Published in March 2016
Why should the flying public be interested in structures and materials research?
R. Krueger
Published in March 2016
Fatigue Life and Damage Tolerance of Postbuckled Stiffened Structures with Initial Delamination
Dávila, C. G., and Bisagni, C.,
Published in January 2016
Development of Benchmark Examples for the Assessment of Quasi-static Delamination Propagation Capabilities
R. Krueger
Published in 2015
A Thermodynamically Consistent Discontinuous Galerkin Formulation for Interface Separation
Versino, D., Mourad, H.M., Dávila, C.G., and Addessio, F.L.
Published in December 2015
Simulation of delamination-migration and core crushing in a CFRP sandwich structure
McElroy M, Leone F. A, Ratcliffe J, Czabaj M, Yuan F-Y.
Published in December 2015
Peridynamic Modeling of Delamination Growth in Composite Laminates
Hu, Y. L.; De Carvalho, N. V.; Madenci, E.
Published in November 2015
Modeling Delamination Migration: Quasi-Static and Fatigue Loading
De Carvalho, N. V. ; Chen, B. Y.; Ratcliffe, J. G.; Pinho, S. T.; Baiz, P.; Tay, T. E.
Published in October 2015
An Enriched Shell Element for Delamination Simulation in Composite Laminates
McElroy, M.
Published in September 2015
Damage Instability and Transition from Quasi-Static to Dynamic Fracture
Dávila, C.G.
Published in September 2015
Deformation gradient tensor decomposition for representing matrix cracks in fiber-reinforced materials
Leone F. A.
Published in September 2015
Progressive Damage Analysis as a Design Tool for Composite Bonded Joints
Leone, F.A., Dávila, C.G., and Girolamo, D.
Published in August 2015
The Virtual Crack Closure Technique for Modelling Interlaminar Failure and Delamination in Advanced Composite Materials
R. Krueger
Published in August 2015
Cohesive Laws for Analyzing Through-Crack Propagation in Cross Ply Laminates
Bergan, A., and Dávila, C.G.
Published in July 2015
Representing Matrix Cracks through Decomposition of the Deformation Gradient Tensor in Continuum Damage Mechanics Methods
Leone F. A.
Published in July 2015
Face Sheet/Core Disbond Growth in Honeycomb Sandwich Panels Subjected to Ground-Air-Ground Pressurization and In-Plane Loading
Z. M. Chen, R. Krueger, and M. Rinker
Published in June 2015
An Analysis Methodology to Predict Damage Propagation in Notched Composite Fuselage Structures
Bergan, A., Dávila, C.G., Leone, F.A., Awerbuch, J., and Tan, T.-M.
Published in May 2015
Real Time Fatigue Damage Growth Assessment of a Composite Three-Stringer Panel Using Passive Thermography
Zalameda, Joseph N.; Burke, Eric R.; Horne, Michael R.; Bly, James B.
Published in April 2015
Cohesive Laws and Progressive Damage Analysis of Composite Bonded Joints, a Combined Numerical/Experimental Approach
Girolamo, Donato; Davila, Carlos G.; Leone, Frank A.; Lin, Shih-Yung
Published in January 2015
Effect of Buckling Modes on the Fatigue Life and Damage Tolerance of Stiffened Structures
Davila, Carlos G.; Bisagni, Chiara; Rose, Cheryl A.
Published in January 2015
A summary of benchmark examples to assess the performance of quasi-static delamination propagation prediction capabilities in finite element codes
R. Krueger
Published in December 2014
Unstable Damage Propagation and Static – Dynamic Transition
Dávila, C.G.
Published in November 2014
Experimental Evaluation of Fatigue Damage Progression in Postbuckled Single Stringer Composite Specimens
Bisagni, C., Dávila, C.G., Rose, C.A., and Zalameda, J.N.
Published in September 2014
Mode I Cohesive Law Characterization of through-Crack Propagation in a Multidirectional Laminate
Bergan, A.C., Dávila, C.G., Leone, F.A., Awerbuch, J., and Tan, T.-M.
Published in September 2014
Investigating Delamination Migration in Composite Tape Laminates
Ratcliffe, James G.; De Carvalho, Nelson V.
Published in July 2014
2C19 HEDI
Mode-I Behavior of Adhesively Bonded Composite Joints at High Loading Rates
Suraj Ravindran, Subramani Sockalingam, Karan Kodagali, Addis Kidane, Michael Sutton, Brian Justusson, Jenna Pang
Published in 2020
An Improved Plastically Dilatant Unified Viscoplastic Constitutive Formulation for Multiscale Analysis of Polymer Matrix Composites Under High Strain Rate Loading
Sorini, C.; Chattopadhyay, A.; and Goldberg, R.K.
Published in March 2020
An Improved Plastically Dilatant Unified Viscoplastic Constitutive Formulation for Multiscale Analysis of Polymer Matrix Composites Under High Strain Rate Loading
Christopher Sorini, Aditi Chattopadhyay, Robert K. Goldberg
Published in January 2020
Building Block Approach For Determination of Ballistic Limit of Composite Panels Using Peridynamics
Cuenca, F., Weckner, O., Silling, S.
Published in January 2020
Development of LS-DYNA MAT261 Material Parameters for Tri-axially Braided Composite Materials
David Manan, Jeongho Kim, Gautam Gopinath, Gulperi Aksel, Peter Finnigan, Larry Foster, Rajiv Naik
Published in January 2020
Experimental Analysis of Out-of-Plane Iosipescu Shear Testing for IM7/8552
Haluza, R.T., Koudela, K.L., Bakis, C.E., Adams, D., Perl, M., Pereira, J.M.
Published in January 2020
A Multiscale, Nonlocal Sub-Laminate Model for Progressive Damage Composite Materials
Karan Kodagali, and Subramani Sockalingam
Published in 2019
High Strain Rate Response of Adhesively Bonded Fiber-Reinforced Composite Joints: A Computational Study to Guide Experimental Design
S. Ravindran, S. Sockalingam, A. Kidane, M. Sutton, B. Justusson, J. Pang
Published in 2019
Multiscale Modeling of Adiabatic Heating and Fiber Breakage in Polymer Matrix Composites Subjected to Impact Loading
Sorini, C.; Chattopadhyay, A.; and Goldberg, R.K.
Published in September 2019
Direction-Dependent Mechanical Properties of a Triaxially Braided Quasi-Isotropic Carbon/Epoxy Composite
Haluza, R.T., Bakis, C.E., Koudela, K.L., and Pereira, J.M.,
Published in September 2019
Progressive Damage and Failure Analysis of Bonded Composite Joints at High Energy Dynamic Impacts
Akhil Bhasin, Suresh Raju Keshavanarayana, Luis Gomez, Aswini Kona Ravi, Brian P. Justusson, Gerardo Olivares
Published in September 2019
Multiscale Computational Model for Polymer Matrix Composites Under Impact Loading, Including Adiabatic Heating Effects
Sorini, C.; Chattopadhyay, A.; and Goldberg, R.K.
Published in August 2019
Through-Thickness Tensile Properties of Triaxial Braided Composites
Jonathan Salem, Christopher Sorini
Published in August 2019
Implementing deformation, damage, and failure in an orthotropic plastic material model
Shyamsunder, L.; Khaled, B.; Rajan, S.D.; Goldberg, R.K.; Carney, K.S.; DuBois, P.; and Blankenhorn, G.
Published in July 2019
Experimental Methods in Materials for Structural Impact Dynamics
Pereira, J.M.
Published June 2019
High Energy Impact Test and Analysis Methods Development for Composite Materials at NASA Glenn Research Center
Goldberg, R.K.
Published in June 2019
Micromechanical modeling of the effects of adiabatic heating on the high strain rate deformation of polymer matrix composites
Sorini, C.; Chattopadhyay, A.; and Goldberg, R.K.
Published in May 2019
A Three-Dimensional Thermodynamically Based Function for the Progressive Failure of Unidirectional Composites
H. Sam Huang, Evan J. Pineda, Shaoyu Hou
Published in April 2019
High Energy Dynamic Impact Methodology and Outcomes in NASA Advanced Composites Consortium
Jeff Iqbal & Gerardo Peña
Published in March 2019
A Multiscale Nonlocal Progressive Damage Model for Composite Materials
Karan Kodagali, and Subramani Sockalingam
Published in January 2019
An Improved Unified Viscoplastic Polymer Constitutive Formulation for Multiscale Analysis of Polymer Matrix Composites Under High Strain Rate Loading
Sorini, C.; Chattopadhyay, A.; and Goldberg, R.K.
Published in January 2019
An Overview of the NASA Advanced Composites Consortium High Energy Dynamic Impact Phase II Technical Path
Brian Justusson, Jenna Pang, Matt Molitor, Mostafa Rassaian, Richard Rosman
Published in January 2019
Characterizing and Use of MAT162 Material Model for Homogenized Laminates in Impact Analysis
Gulperi Aksel, Gautam Gopinath, Megan Ritchey, Larry Foster, Rajiv Naik, J. Michael Pereira
Published in January 2019
Determination of Ballistic Limit of Skin-Stringer Panels Using Nonlinear, Strain-Rate Dependent Peridynamics
Fernando Cuenca, Olaf Weckner, Stewart A. Silling, and Mostafa Rassaian
Published in January 2019
Evaluation of LS-DYNA MAT162 for Modeling Composite Fastener Joints for High Rates of Loading
A. Kona, A. Bhasin, L. Gomez, G. Olivares, A. Gomez, S. Keshavanarayana, J. Pang, M. Molitor, and M. Rassaian
Published in January 2019
The Use of Depth of Penetration Testing to Develop Element Erosion Parameters in LS-DYNA Explicit Simulations
Brian Justusson, Matt Molitor, Jenna Pang, Ryan Michel, Mostafa Rassaian, J. Michael Pereira
Published in January 2019
Verification and Validation of a Three-Dimensional Composite Impact Model with Tabulated Input
Robert K. Goldberg, Trenton M. Ricks, Kelly S. Carney, Paul DuBois, Bilal Khaled, Loukham Shyamsunder, Subramaniam Rajan, Gunther Blankenhorn
Published in January 2019
Verification Benchmarks and Validation of MAT261 for High Energy Dynamic Impact Applications
Matthew Molitor, Brian Justusson, Jaffar Iqbal, Alan Byar, Mostafa Rassaian
Published in January 2019
Development of a Tabulated Material Model for Composite Material Failure, MAT213 Part 1: Theory, Implementation, Verification & Validation
Goldberg, R.K.; Carney, K.S.; DuBois, P.; Hoffarth, C.; Khaled, B.; Hoffarth, C., Kahled, B., Shyamsunder, L., Rajan, S.
Published in November 2018
Development of a Tabulated Material Model for Composite Material Failure, MAT213 Part 2: Experimental Tests to Validate the Behavior of T800-F3900 Toray Composite
Kahled, B., Shyamsunder, L., Schmidt, N., Hoffarth, C., Rajan, S.
Published in November 2018
Development of a Tabulated Material Model for Composite Material Failure, MAT213 Part 3: Implementation of Probabilistic Modeling Capability in the Tabulated Composite Failure Model, MAT213
Achstetter, T., Park, C-K., Kan, C-D
Published in November 2018
Experimental Investigation and Numerical Analysis of the In-Plane Tensile Behavior of a Triaxially Braided Composite with Subcell Modeling Approach
Cater, C.R.; Goldberg, R.K.; Kohlman, L.W.; and Xiao, X.
Published in September 2018
A Nonlocal Progressive Damage Model for Composite Materials
Karan Kodagali, Subramani Sockalingam
Published in September 2018
An Overview of NASA ACC Design for Manufacturing & Prediction of Ballistic Limit
M Rassaian, S Chishom
Published in September 2018
High Rate Testing of Composite Fastener Joints with and without Clamp-up
A. Gomez, S. Keshavanarayana, A. Bhasin, A. Kona, L. Castillo, J. Pang, M. Molitor, M. Rassaian
Published in September 2018
Multiscale Modeling of the Impact Response of Triaxially Braided Polymer Matrix Composites, Including Effects of Adiabatic Heating
Sorini, C.; Chattopadhyay, A.; and Goldberg, R.K.
Published in September 2018
Verification Benchmarks and Validation of Advanced Features of MAT261 for High Energy Dynamic Impact Applications
Jenna Pang, Matt Molitor, Brian Justusson, Mostafa Rassaian
Published in September 2018
Damage characterization of composites to support an orthotropic plasticity material model
Khaled, B.; Shyamsunder, L.; Hoffarth, C.; Rajan, S.D.; Goldberg, R.K; Carney, K.S.; DuBois, P.; and Blankenhorn, G.
Published in August 2018
Analysis and Characterization of Damage Utilizing a Generalized Composite Material Model Suitable for Impact Problems
Goldberg, R.K.; Carney, K.S.; DuBois, P.; Hoffarth, C.; Khaled, B.; Rajan, S.; and Blankenhorn, G.
Published in July 2018
Influence of Fiber Volume and Alignment on the Impact Resistance of Braided Carbon Fiber/Epoxy Composites
Sandi G. Miller, Gary D. Roberts, Paula J. Heimann, Linda S. McCorkle, Richard E. Martin, J. Michael Pereira and Robert K. Goldberg
Published in July 2018
Implementation of a tabulated failure model into a generalized composite material model
Goldberg, R.K.; Carney, K.S.; DuBois, P.; Hoffarth, C.; Khaled, B.; Shyamsunder, L.; Rajan, S.; and Blankenhorn, G.
Published in July 2018
Computational Modeling of Adiabatic Heating in Triaxially Braided Polymer Matrix Composites Subjected to Impact Loading via a Subcell Based Approach
Chris Sorini (Arizona State)
Published in June 2018
Development and Verification of an Orthotropic Elasto-Plastic Three-Dimensional Model with Tabulated Input Suitable for Use in Composite Impact Problems
Goldberg, R.K.; Carney, K.; DuBois, P.; Khaled, B.; Shyamsunder, L.; Hoffarth, C.; Rajan, S.; and Blankenhorn, G.
Published in June 2018
Generating Experimental Data for a Three-Dimensional Generalized Composite Material Model
Khaled, B.; Holt, N.; Shyamsunder, L.; Hoffarth, C.; Rajan, S.D.; Goldberg, R.K; Carney, K.S.; DuBois, P.; and Blankenhorn, G.
Published in June 2018
Using Mat213 for Simulation of High Speed Impacts of Composite Structures
Shyamsunder, L.; Khaled, B.; Hoffarth, C.; Rajan, S.D.; Goldberg, R.K; Carney, K.S.; DuBois, P.; and Blankenhorn, G.
Published in June 2018
High Strain Rate Response of Adhesively Bonded Fiber-Reinforced Composite Joints: A Computational Study to Guide Experimental Design
Suraj Ravindran, Subramani Sockalingam, Addis Kidane, Michael Sutton, Brian Justusson, Jenna Pang
Published in June 2018
An Overview of NASA ACC High Energy Dynamic Impact Methodology for Prediction of Ballistic Limit
Mostafa Rassaian, Matthew E. Melis, J. Michael Pereira, Jenna Pang, Brian Justusson
Published in April 2018
Comparison of Impact Damage from Spin Pit and Flat Panel Gas Gun Testing
Vanderklock, A., Dorer, J., DuTour, R., Stamm, A., Hu, E., Pereira, J.M., Roberts, G.D., Goldberg, R.K., Xiao, X.
Published in April 2018
Development and Verification of an Orthotropic Three-Dimensional Model with Tabulated Input Suitable for Use in Composite Impact Problems
Dr. Robert Goldberg, Dr. Kelly Carney, Mr. Paul DuBois, Mr. Canio Hoffarth, Dr. Bilal Khaled, Mr. Loukham Shyamsunder, Dr. Subramaniam Rajan and Dr. Gunther Blankenhorn
Published in April 2018
Effects of Adiabatic Heating on the High Strain Rate Deformation Response of Triaxially Braided Polymer Matrix Composites
Sorini, C.; Chattopadhyay, A.; and Goldberg, R.K.
Published in April 2018
Experimental Techniques for Material Characterization of Composites for Modeling Impact Analysis
Dr. Bilal Khaled, Mr. Canio Hoffarth, Mr. Loukham Shyamsunder, Dr. Subramaniam Rajan, Dr. Robert Goldberg, Dr. Kelly Carney, Mr. Paul DuBois and Dr. Gunther Blankenhorn
Published in April 2018
Multiscale investigation of micro-scale stresses at composite laminate free edge
Cater, C.R.; Xiao, X.; Goldberg, R.K.; and Gong, X.
Published in April 2018
An experimental investigation into the high velocity impact responses of S2-glass/SC15 epoxy composite panels with a gas gun
Vanderklock, A., Stamm, A., Dorer, J., Hu, E., Auvenshine, M., Pereira, J.M., Xiao, X.
Published in January 2018
Comparison of Test Methods to Determine Failure Parameters for MAT162 Calibration
Matthew Molitor, Brian Justusson, Mostafa Rassaian, Jenna Pang
Published in January 2018
Determination of Ballistic Limit for IM7/8552 Using LS-DYNA MAT 261
Alan D. Byar, Jenna K. Pang, Jeff Iqbal, Jeff Ko, Mostafa Rassaian
Published in January 2018
Determination of Ballistic Limit for IM7/8552 Using Peridynamics
Fernando Cuenca, Olaf Weckner, Stewart Silling, Jenna Pang, Mostafa Rassaian
Published in January 2018
Development and Application of a Tool for Optimizing Composite Matrix Viscoplastic Material Parameters
Murthy, Pappu L. N., Naghipour Ghezeljeh, Paria, Bednarcyk, Brett A.
Published in January 2018
Dynamic Impact Testing and Model Development in Support of NASA’s Advanced Composite Program
Matthew E. Melis, J. Michael Pereira, Robert Goldberg, Mostafa Rassaian
Published in January 2018
NASA ACC High Energy Dynamic Impact Methodology and Outcomes
Kenneth J. Hunziker, Jenna K. Pang, Matthew E. Melis, J. Michael Pereira, Mostafa Rassaian
Published in January 2018
Incorporation of Failure Into an Orthotropic Three-Dimensional Model With Tabulated Input Suitable for Use in Composite Impact Problems
Shyamsunder, L.; Rajan, S.; and Blankenhorn, G.
Published in 2017
Effects of Adiabatic Heating on the High Strain Rate Deformation of Polymer Matrix Composites
Sorini, C.; Chattopadhyay, A.; Goldberg, R
Published in October 2017
Development of an Input Suite for an Orthotropic Composite Material Model
Hoffarth, Canio; Shyamsunder, Loukham; Khaled, Bilal; Rajan, Subramaniam; Goldberg, Robert K.; Carney, Kelly S.; Dubois, Paul; Blankenhorn, Gunther
Published in October 2017
Implementation of a Tabulated Failure Model Into a Generalized Composite Material Model Suitable for Use in Impact Problems
Goldberg, Robert K.; Carney, Kelly S.; Dubois, Paul; Hoffarth, Canio; Khaled, Bilal; Shyamsunder, Loukham; Rajan, Subramaniam; Blankenhorn, Gunther
Published in October 2017
Multiscale Investigation of Micro-Cracking at Composite Laminate Free Edge
Cater, C.R.; Xiao, X.; Goldberg, R.K.; and Gong, X.
Published in October 2017
NASA ACC High Energy Dynamic Impact Analysis and Testing Overview
Rassaian, M., Pang, J., Hunziker, K.
Published in October 2017
Experimental characterization of composites to support an orthotropic plasticity material model
Khaled, B.; Shyamsunder, L.; Hoffarth, C.; Rajan, S.D.; Goldberg, R.K; Carney, K.S.; DuBois, P.; and Blankenhorn, G.
Published in September 2017
Using Virtual Tests to Complete the Description of a Three-Dimensional Orthotropic Material
Joseph Harrington, Canio Hoffarth, Subramaniam Rajan, goldberg, carney, dubois, blankenhorn
Published in Septemer 2017
Using Virtual Tests to Complete the Description of a Three-Dimensional Orthotropic Material
Harrington, J.; Hoffarth, C.; Rajan, S.; Goldberg, R.; Carney, K.; DuBois, P.; and Blankenhorn, G.
Published in September 2017
A Compilation of MATLAB Scripts and Functions for MACGMC Analyses
Murthy, Pappu L. N.; Bednarcyk, Brett A.; Mital, Subodh K.
Published in July 2017
Development of Structural Energy Storage for Aeronautics Applications
Santiago-Dejesus, Diana; Loyselle, Patricia L.; Demattia, Brianne ; Bednarcyk, Brett; Olson, Erik; Smith, Russell ; Hare, David
Published in June 2017
Incorporation of Failure Into an Orthotropic Three-Dimensional Model with Tabulated Input Suitable for Use in Composite Impact Problems
Goldberg, Robert K.; Carney, Kelly S.; Dubois, Paul; Hoffarth, Canio; Khaled, Bilal; Shyamsunder, Loukham; Rajan, Subramaniam; Blankenhorn, Gunther
Published in May 2017
Investigation of Carbon Fiber Architecture in Braided Composites Using X-Ray CT Inspection
Rhoads, Daniel J.; Miller, Sandi G.; Roberts, Gary D.; Rauser, Richard W.; Golovaty, Dmitry; Wilber, J. Patrick; Espanol, Malena I.
Published in May 2017
Structural Design Parameters for Germanium
Salem, Jon; Rogers, Richard; Baker, Eric
Published in May 2017
Micromechanics of Composite Materials Governed by Vector Constitutive Laws
Bednarcyk, Brett A.; Aboudi, Jacob; Arnold, Steven M.
Published in May 2017
Verification and Validation of a Three-Dimensional Orthotropic Plasticity Constitutive Model Using a Unidirectional Composite
Hoffarth, C.; Khaled, B.; Shyamsunder, L.; Rajan, S.; Goldberg, R.K.; Carney, K.S.; DuBois, P.; and Blankenhorn, G.
Published in May 2017
Development of an Orthotropic Elasto-Plastic Generalized Composite Material Model Suitable for Impact Problems
Goldberg, R.K.; Carney, K.S.; DuBois, P.; Hoffarth, C.; Harrington, J; Rajan, S.; and Blankenhorn, G.
Published in 2016
Implementation and validation of a three-dimensional plasticity-based deformation model for orthotropic composites
Hoffarth, C.; Rajan, S.D.; Goldberg, R.K.; Revilock, D.; Carney, K.S.; DuBois, P.; and Blankenhorn, G.
Published in December 2016
Revisiting of Multiscale Static Analysis of Notched Laminates Using the Generalized Method of Cells
Naghipour Ghezeljeh, Paria; Arnold, Steven M.; Pineda, Evan J.
Published in December 2016
Mechanical Model Development for Composite Structural Supercapacitors
Ricks, Trenton M.; Lacy, Thomas E., Jr.; Santiago, Diana; Bednarcyk, Brett A.
Published in November 2016
ASTM Committee C28: International Standards for Properties and Performance of Advanced Ceramics, Three Decades of High-quality, Technically-rigorous Normalization
Jenkins, Michael G.; Salem, Jonathan A.
Published in October 2016
Analysis and Characterization of Damage and Failure Utilizing a Generalized Composite Material Model Suitable for Use in Impact Problems
Goldberg, R.K.; Carney, K.; DuBois, P.; Khaled, B.; Hoffarth, C.; Rajan, S.; and Blankenhorn, G.
Published in September 2016
Fatigue Analysis of Notched Laminates: A time-efficient macro-mechanical approach
Naghipour P, Pineda E.J, Bednarcyk B.A, Arnold S.M, Waas A.M
Published in September 2016
The Effects of Hygrothermal Aging on the Impact Penetration Resistance of Triaxially Braided Composites
Pereira, J.M., Revilock, D.M., Ruggeri, C.R., Roberts., G.D., Kohlman, L.W., Miller, S.G.
Published in September 2016
Multiscale Static Analysis of Notched and Unnotched Laminates Using the Generalized Method of Cells
Naghipour Ghezeljeh, Paria; Arnold, Steven M.; Pineda, Evan J.; Stier, Bertram; Hansen, Lucas; Bednarcyk, Brett A.; Waas, Anthony M.
Published in August 2016
Development of a Subcell Based Modeling Approach for Modeling the Architecturally Dependent Impact Response of Triaxially Braided Polymer Matrix Composites
Sorini, Chris; Chattopadhyay, Aditi; Goldberg, Robert K.; Kohlman, Lee W.
Published in July 2016
Analysis and Testing of a Composite Fuselage Shield for Open Rotor Engine Blade-Out Protection
Pereira, J.M., Emmerling, W.C., Seng, S., Frankenberger, C., Ruggeri, C.R., Revilock, D.M., Carney, K.
Published in June 2016
Development of a Subcell Based Modeling Approach for Modeling the Architecturally Dependent Impact Response of Triaxially Braided Polymer Matrix Composites
Sorini, C.; Chattopadhyay, A.; Goldberg, R.K.; and Kohlman, L.W.
Published in June 2016
Incorporation of Damage and Failure Into an Orthotropic Elasto-Plastic Three-Dimensional Model with Tabulated Input Suitable for Use in Composite Impact Problems
Goldberg, R.K.; Carney, K.S.; DuBois, P.; Hoffarth, C.; Khaled, B.; Rajan, S.; and Blankenhorn, G.
Published in June 2016
Multiscale Analysis of Micro-Scale Stresses At The Laminate Free Edge
Cater, C.; Goldberg, R.K.; and Xiao, X.
Published in June 2016
Multiscale Static Analysis of Notched and Un-notched Laminates using the Generalized Method of Cells
Naghipour P, Arnold S.M, Pineda E.J, Stier B, Hansen L, Bednarcyk B.A, Waas A.M
Published in June 2016
Using Tabulated Experimental Data to Drive an Orthotropic Elasto-Plastic Three Dimensional Model for Impact Analysis
Hoffarth, C.; Khaled, B.; Rajan, S.D.; Goldberg, R.K; Carney, K.S.; DuBois, P.; and Blankenhorn, G.
Published in June 2016
Analysis and Characterization of Damage Utilizing an Orthotropic Generalized Composite Material Model Suitable for Use in Impact Problems
Goldberg, Robert K.; Carney, Kelly S.; DuBois, Paul; Hoffarth, Canio; Rajan, Subramaniam; Blankenhorn, Gunther
Published in April 2016
Analysis and Characterization of Damage Utilizing an Orthotropic Generalized Composite Material Model Suitable for Use in Impact Problems
Goldberg, Robert K.; Carney, Kelly S.; DuBois, Paul; Hoffarth, Canio; Rajan, Subramaniam; Blankenhorn, Gunther
Published in February 2016
Additive Manufacturing and Characterization of Polylactic Acid (PLA) Composites Containing Metal Reinforcements
Kuentz, Lily; Salem, Anton; Singh, M.; Halbig, M. C.; Salem, J. A.
Published in January 2016
Fatigue Analysis of Notched Laminates: A Time-Efficient Macro-Mechanical Approach
Naghipour, P.; Pineda, E. J.; Bednarcyk, B. A.; Arnold, S. M.; Waas, A. M.
Published in January 2016
International Standards for Properties and Performance of Advanced Ceramics – 30 years of Excellence
Jenkins; Salem; Helfinstine; Quinn; Gonczy
Published in January 2016
The EST Model for Predicting Progressive Damage and Failure of Open Hole Bending Specimens
Joseph, Ashith P. K.; Waas, Anthony M.; Pineda, Evan J.
Published in January 2016
Dynamic Open-Rotor Composite Shield Impact Test Report
Seng; Frankenberger; Ruggeri; Revilock; Pereira; Carney; Emmerling
Published in November 2015
Ballistic and Cyclic Rig Testing of Braided Composite Fan Case Structures
Watson, William R.; Roberts, Gary D.; Pereira, J. Michael; Braley, Michael S.
Published in October 2015
3D Progressive Damage Modeling for Laminated Composites Based on Crack Band Theory and Continuum Damage Mechanics
Wang, J.T., Pineda, E.J., Ranatunga, P.V. and Smeltzer, S. S.
Published in September 2015
Analysis of Fiber Clustering in Composite Materials Using High-Fidelity Multiscale Micromechanics
Bednarcyk, Brett A.; Aboudi, Jacob; Arnold, Steven M.
Published in September 2015
Computationally Efficient Solution of the High-Fidelity Generalized Method of Cells Micromechanics Relations
Ricks, T.M., Lacy, T.E., Pineda, E.J., Bednarcyk, B.A., and Arnold, S.M.
Published in September 2015
Experimental and Numerical Analysis of Triaxially Braided Composites Utilizing a Modified Subcell Modeling Approach
Cater, C.; Xiao, X.; Goldberg, R.K.; and Kohlman, L.W.
Published in September 2015
Incorporation of Plasticity and Damage Into an Orthotropic Three-Dimensional Model With Tabulated Input Suitable for Use in Composite Impact Problems
Goldberg, R.K.; Carney, K.; DuBois, P.; Hoffarth, C.; Rajan, S.; and Blankenhorn, G.
Published in September 2015
Single and Multi-ply Braided Composite Response Predictions using Modified Subcell Approach
Cater, C.R.; Xiao, X.; Goldberg, R.K.; and Kohlman, L.W.
Published in September 2015
Incorporation of Plasticity and Damage Into an Orthotropic Three-Dimensional Model With Tabulated Input For Use in Composite Impact Problems
Goldberg, R.K.; Carney, K.S.; DuBois, P.; Hoffarth, C.; Rajan, S.; and Blankenhorn, G
Published in August 2015
Analysis of Fiber Clustering in Composite Materials Using High-Fidelity Multiscale Micromechanics
Bednarcyk, Brett A.; Aboudi, Jacob; Arnold, Steven M.
Published in July 2015
Experimental and Numerical Analysis of Triaxially Braided Composites Utilizing a Modified Subcell Modeling Approach
Cater, C.; Xiao, X.; Goldberg, R.K.; and Kohlman, L.W.
Published in June 2015
Investigation of Micro-Scale Architectural Effects on Damage of Composites
Stier, Bertram; Bednarcyk, Brett A.; Simon, Jaan W.; Reese, Stefanie
Published in May 2015
Development and Characterization of a Rate-Dependent Three-Dimensional Macroscopic Plasticity Model Suitable for Use in Composite Impact Problems
Goldberg, R.K.; Carney, K.S.; DuBois, P.; Hoffarth, C.; Rajan, S.; and Blankenhorn, G.
Published in April 2015
Multiscale Static Analysis of Notched and Un-notched Laminates using the Generalized Method of Cells
Naghipour, P., Pineda, E.J., Hansen, L.R., Stier, B., Arnold, S.M., Bednarcyk, B.A., and Waas, A.M.
Published in January 2015
Microstructural Influence on Deformation and Fatigue Life of Composites Using the Generalized Method of Cells
Arnold, S.M., Murthy, P.L.M., Bednarcyk, B.A., and Pineda, E.J.
Published in January 2015
Verification and Validation of a Three-Dimensional Generalized Composite Model
Hoffarth, Canio; Harrington, Joseph; Rajan, Subramaniam D.; Goldberg, Robert K.; Carney, Kelly S.; DuBois, Paul; Blankenhorn, Gunther
Published in January 2015
Theoretical Development of an Orthotropic Elasto-Plastic Generalized Composite Material Model
Goldberg, Robert; Carney, Kelly; DuBois, Paul; Hoffarth, Canio; Harrington, Joseph; Rajan, Subramaniam; Blankenhorn, Gunther
Published in August 2014
Development and Characterization of an Orthotropic Three-Dimensional Macroscopic Plasticity Model Suitable for Use in Composite Impact Problems
Goldberg, R.K.; Carney, K.S.; DuBois, P.; Hoffarth, C.; Harrington, J; Rajan, S.; and Blankenhorn, G.
Published in June 2014
Modeling Meso Structure of Triaxially Braided Composites with a Subcell Approach
Cater, C.; Xiao, X.; Khademi, V.; Goldberg, R.K.; and Kohlman, L.W.
Published in June 2014
Verification and Validation of a Three-Dimensional Generalized Composite Material Model
Hoffarth, C.; Harrington, J.; Rajan, S.D.; Goldberg, R.K; Carney, K.S.; DuBois, P.; and Blankenhorn, G.
Published in June 2014
2C20 Rapid Tools
Efficient Framework for Coupled Analysis of Impact Damage and Compression-After-Impact Strength of Composite Laminates
Luke Borkowski, Rajesh S. Kumar, Upul R. Palliyaguru
Published in 2020
Mechanics-Based Modeling Approach for Rapid Prediction of Low Velocity Impact Damage in Composite Laminates
Luke Borkowski and Rajesh Kumar
Published in January 2020
Unified Analysis of Aerospace Structures Through Implementation of Rapid Tools into a Stress Framework
Craig S. Collier
Published in January 2020
Verification, Validation, and Limits of Applicability of a Rapid Bonded Joint Analysis Tool
Stephen P. Jones, Bertram Stier, Brett A. Bednarcyk, Evan J. Pineda, Upul R. Palliyaguru
Published in January 2020
Rapid Design Tool for Delamination Modeling in Composite Laminates with Plydrops
Voleti Sreenivasa and Rajesh Kumar
Published in June 2019
Investigation of Stiffening Effects on Notch Growth Trajectory of Composite Stiffened Panels with Large Transverse Notches
Patrick Enjuto, Mark Lobo, Tomas H. Walker, Gerardo Pena, Eric Cregger, and Steven Wanthal
Published in January 2019
Automated Fiber Placement Defects: Rapid Online Assessment Tool
L Bahamonde, M AlBazzan, Z Gurdal, B Tatting, R Harik
Published in May 2018
Inverse Method for Estimation of Composite Kink-Band Toughness from Open-Hole Compression Strength Data
Luke Borkowski, Rajesh S. Kumar
Published in February 2018
Investigation of Stiffening and Curvature Effects on the Residual Strength of Composite Stiffened Panels with Large Transverse Notches
Patrick Enjuto; Tom Walker; Mark Lobo; Samuel E. Cregger; Steven P. Wanthal
Published in January 2018
Rapid Analysis Method for Composite Compression after Impact Strength Prediction
Luke Borkowski, Rajesh S. Kumar
Published in January 2018
Three-Dimensional High Fideliy Progressive Failure Damage Modeling of NCF Composites
Venkat Aitharaju; Satvir Aashat; Hamid G. Kia; Arunkumar Satyanarayana; Philip B. Bogert
Published in October 2017
Influence of Shear Stiffness Degradation on Crack Paths in Uni-Directional Composite Laminates
Satyanarayana, Arunkumar; Bogert, Phil B.
Published in July 2017
Full-Field Reconstruction of Structural Deformations and Loads from Measured Strain Data on a Wing Using the Inverse Finite Element Method
Miller, Eric J.; Manalo, Russel; Tessler, Alexander
Published in November 2016
Imperfection Insensitivity Analyses of Advanced Composite Tow-Steered Shells
Wu, K. Chauncey; Farrokh, Babak; Stanford, Bret K.; Weaver, Paul M.
Published in January 2016
2C21 Rapid Inspection
Automated Fiber Placement Defects: Insertion and Post-Cure Assessment
Roudy Wehbe, Addis Tessema, Ramy Harik, Brian Tatting, Addis Kidane, Zafer Gurdal
Published in May 2020
Ultrasonic Lamb Wave Inspection of Composite Defects
Zhaoyun Ma, Lingyu Yu
Published in May 2020
Laser Based Rapid Lamb Wave Inspection for Composite Plates
Zhaoyun Ma, Lingyu Yu
Published in April 2020
Current and Future Needs and Research for Composite Materials NDE at NASA
K. E. Cramer
Published in November 2019
In Situ Thermal Inspection of Automated Fiber Placement Manufacturing
Peter D. Juarez, Elizabeth D. Gregory
Published in September 2019
AFP Inspection: An Automated System for Identification and Characterization
Christopher Sacco
Published in July 2019
Lamb Wave Nondestructive Evaluation on Imaging on Plate-Like Structures
Zhaoyun Ma
Published in July 2019
A Plausibility Argument for Angular Ultrasonic Scattering in Fiber-Reinforced Composites
Pat Johnston
Published in July 2019
In Situ Thermographic Process Monitoring During Automated Fiber Placement
Peter D. Juarez, Elizabeth D. Gregory
Published in July 2019
The Application of Line Scan Thermography Using Multiple Collaborative Robots
K. E. Cramer, Daniel F. Perey, Joshua L. Brown
Published in June 2019
Computational Non-destructive Evaluation Improving Ultrasonic Interrogation of Complex Geometry Composite Parts
V. Hafiychuk, K. Wheeler and K. Gee
Published in June 2019
Machine Learning Based AFP Inspection: A Tool for Characterization and Integration
Christopher Sacco, Anis Baz Radwan, Tyler Beatty, Ramy Harik
Published in May 2019
On Machine Learning in Engineered Materials
Christopher Saccoa, Ramy Harika, Elizabeth Gregory
Published in April 2019
Challenges and Opportunities in Composites NDE
K. E. Cramer
Published in April 2019
Progress in Autonomous Inspections Using Collaborative Robots
K. E. Cramer, Joshua L. Brown, Daniel F. Perey
Published in April 2019
Wide-Angle Ultrsonic Backscatter: Concept for Enhanced Array-Based Inspection of Composite Materials
Pat Johnston
Published in April 2019
Lamb wave defect detection and evaluation using a fully non-contact laser system
Zhaoyun Ma, Lingyu Yu
Published in March 2019
Swept-Frequency Ultrasonic Phase Evaluation of Adhesive Bondingi ni Tri-Layer Structures
Harold A. Haldren, Daniel F. Perey, William T. Yost, K. Elliott Cramer, and Mool C. Gupta
Published in March 2019
Acousto-Ultrasonic Methods Toward Field Application
Stephen Harris Howden
Published in 2018
Bond Strength Evaluation of Interfacially-Contaminated Adhesively Bonded Single Lap Joints using Ultrasonic Phase Measurements
Harold A. Haldren, Daniel F. Perey, William T. Yost, K. Elliott Cramer, Mool C. Gupta
Published in October 2018
Finite Difference Simulation of Ultrasonic Waves for Complex Composite Laminates
E. Frankforter, C. Campbell-Leckey, and W. Schneck
Published in July 2018
In-situ Thermal Inspection of Automated Fiber Placement Manufacturing
Peter Juarez and Elizabeth Gregory
Published in July 2018
Nondestructive Evaluation of Interfacial Bond Strength in Single Lap Joints via Swept-Frequency Ultrasonic Phase Measurements
H. Haldren, D. Perey, W. Yost, K.E. Cramer, and M. Gupta
Published in July 2018
NASA NDE Efforts for Additive Manufacturing
Joseph Zalameda
Published in July 2018
A Digital, Constant-Frequency Pulsed Phase-Locked Loop Instrument for Real-Time, Absolute Ultrasonic Phase Measurements
H. Haldren, M. Gupta, D. Perey, W. Yost, and K.E. Cramer
Published in May 2018
In-situ Thermal Inspection of Automated Fiber Placement Operations for Tow and Ply Defect Detection
P. Juarez, E. Gregory, and K.E. Cramer
Published in May 2018
Lebedev Scheme for Ultrasound Simulation in Composites
Francisco Hernando Quintanilla and Cara Campbell-Leckey
Published in May 2018
Research Developments in Non-Invasive Measurement Systems for Aerospace Composite Structures at NASA
K. Elliott Cramer
Published in May 2018
Automated Fiber Placement Defects: Automated Inspection and Characterization
Christopher Sacco, Anis Baz Radwan, Ramy Harik, Michel Van Tooren
Published in May 2018
Current and Future Needs and Research for Composite Materials NDE
K. Elliott Cramer
Published in March 2018
Research for Composite Materials NDE and the NASA Advanced Composites Project
K. Elliott Cramer and Daniel Perey
Published in March 2018
Simulation of Guided Wave Ultrasound Propagation in Composite Laminates: Benchmark Comparisons of Numerical Codes and Experiment
C. Campbell-Leckey, K. Wheeler, V. Hafiychuk, H. Hafiychuk, and D. Timucin
Published in March 2018
A Model-Bead, Bayesian Solution for Characterization of Complex Damage Scenarios in Aerospace Composite Structures
H. Reed, C. Campbell-Leckey, A. Dick, G. Harvey, and J. Dobson
Published in January 2018
Development and Validation of NDE Standards for NASA’s Advanced Composites Project
Elliott Cramer and Daniel Perey
Published in October 2017
A Model Based Bayesian Solution for Characterization of Complex Damage Scenarios in Aerospace Composite Structures
Heather Reed, Cara Leckey, A. Dick, G. Harvey and J. Dobson
Published in September 2017
One-Dimensional Model for the Ultrasonic Response of Resin-Filled Gaps in Automated Tape Layup Composites
Patrick H. Johnston, Peter D. Juarez
Published in September 2017
Ultrasonic Phase Measurement of Adhesion Quality in Aluminum/Epoxy Lap Joints
Harold Haldren, Daniel Perey, William Yost, Elliott Cramer, Mool Gupta
Published in Septemer 2017
Development of Eddy Current Probe for Fiber Orientation Assessment in Carbon Fiber Composites
Russell A. Wincheski and Selina Zhao (General Motors R&D Center, Warren, MI)
Published in July 2017
Lebedev Scheme for Ultrasound Modeling in Composites
Francisco Hernando Quintanilla and Cara A.C. Leckey
Published in July 2017
Quadrupole Simulations of Passive Thermography in Composites
William P Winfree, Joseph N Zalameda and Elizabeth D Gregory
Published in July 2017
Quantitative Nondestructive Thermal Inspection During Automated Fiber placement of Aerospace Composites
Elizabeth D. Gregory, Peter D. Juarez and K. Elliott Cramer
Published in July 2017
Application of the Quadrupole Method for Simulation of Passive Thermography
Winfree, William P.; Zalameda, Joseph N.; Gregory, Elizabeth D.
Published in April 2017
Far Field Measurements of Small Angle Carbon Fiber Misalignments
William Wilson, Jason Moore and Peter Juarez
Published in April 2017
Thermal Inspection of a Composite Fuselage Section Using a Fixed Eigenvector Principal Component Analysis Method
Zalameda, Joseph N.; Bolduc, Sean; Harman, Rebecca
Published in April 2017
3D-Printed Multi-Axis Angular Scanner for Measurement of the Polar Backscattering Characteristics
Patrick Johnston, Joshua Brown
Published in March 2017
Carbon Fiber TOW Angle Determination Using Microwave Reflectometry
Wilson, William C.; Moore, Jason P.; Juarez, Peter D.
Published in October 2016
Light Diffraction by Large Amplitude Ultrasonic Waves in Liquids
Adler, Laszlo; Cantrell, John H.; Yost, William T.
Published in September 2016
Advanced in In Situ Inspection of Automated Fiber Placement Systems
Juarez, Peter D.; Cramer, K. Elliott; Seebo, Jeffrey P.
Published in April 2016
Simulation of Thermographic Responses of Delaminations in Composites with Quadrupole Method
Winfree, William P.; Zalameda, Joseph N.; Howell, Patricia A.; Cramer, K. Elliott
Published in April 2016
Composite Characterization Using Ultrasonic Wavefield Techniques
Leckey, Cara A. C.; Juarez, Peter D.; Seebo, Jeffrey P.
Published in March 2016
Phased Array Beamforming and Imaging in Composite Laminates Using Guided Waves
Tian, Zhenhua; Leckey, Cara A. C.; Yu, Lingyu
Published in March 2016
Crack Imaging and Quantification in Aluminum Plates with Guided Wave Wavenumber Analysis Methods
Yu, Lingyu; Tian, Zhenhua; Leckey, Cara A. C
Published in May 2015
Multi-Frequency Local Wavenumber Analysis and Ply Correlation of Delamination Damage
Juarez, Peter D.; Leckey, Cara A. C.
Published in May 2015
Impact Induced Delamination Detection and Quantification With Guided Wavefield Analysis
Tian, Zhenhua; Leckey, Cara A. C.; Yu, Lingyu; Seebo, Jeffrey P.
Published in May 2015
Ultrasonic Inspection to Quantify Failure Pathologies of Crimped Electrical Connections
Cramer, K. Elliott; Perey, Daniel F.; Yost, William T.
Published in July 2014
2C22 DFM
Verification and Validation of Integrated Design and Manufacturing Analysis Tool for AFP Structures
August Noevere and Craig Collier
Published in May 2020
Design for Manufacturing Tool for Automated Fiber Placement Structures – Verification and Validation
August T. Noevere, Craig S. Collier
Published in January 2020
Automation of AFP Process Planning Functions: Importance and Ranking
Joshua A. Halbritter, Ramy Harik, Clint Saidy, August Noevere, Brian W. Grimsley
Published in May 2019
Integrated Design and Manufacturing Analysis for Automated Fiber Placement Structures
August Noevere, Craig Collier, Ramy Harik
Published in May 2019
Design for Manufacturing: Laminate Focused Design and Analysis Tools for Automated Composites Manufacturing
Jeron Moore, Andre Colvin, Sayata Ghose, Brice Johnson
Published in May 2019
Automation of Process Planning for Automated Fiber Placement
Joshua Halbritter
Published in April 2019
Development of a Design for Manufacturing Tool for Automated Fiber Placement Structures
August T. Noevere, Craig S. Collier, Ramy Harik, and Joshua Halbritter
Published in January 2019
Integrated Design and Manufacturing Analysis for Automated Fiber Placement Structures
August Noevere
Published in January 2019
Automated Fiber Placement Defect Identity Cards: Cause, Anticipation, Existence, Significance, and Progression
Ramy Harik, Clint Saidy, Stephen Williams, Roudy Wehbe, Zafer Gurdal, and Brian Grimsley
Published in May 2018
Mapping AFP Manufacturing Data from VCP to HyperSizer for Stress Analysis and Optimization
August T. Noevere, Craig S. Collier
Published in January 2018
Measurement of Sub Degree Angular Carbon Fiber Tow Misalignment
W. Wilson, J. Moore, and H. Mccraw
Published in November 2017
C23 AFP Model
Defect Formation in Automated Fiber Placement Process
Wenping Zhao, Huan Zhang, John Gangloff, Milan Mitrovic
Published in May 2020
A Validation Study of a Physics-based Tack Model for an Automated Fiber Placement Process Simulation
Victoria E. Hutton, Alireza Forghani, Paulo Silva, Curtis Hickmott, Thammaia Sreekantamurthy, Christopher J. Wohl, Brian W. Grimsley, Brian Coxon, Anoush Poursartip
Published in May 2019
Characterization of Prepreg Tack for Composite Manufacturing by Automated Fiber Placement
Christopher J. Wohl, Curtis Hickmott, Victoria E. Hutton, Alireza Forghani, Frank L. Palmieri, Brian W. Grimsley
Published in February 2019
Effects of Processing Parameters on Defect Formation in Automated Fiber Placement Process
Wenping Zhao, Sean Tiwari, Shaahin Amini
Published in May 2018
Experimental Calibration of a Numerical Model of Prepreg Tack for Predicting AFP Process Related Defects
Alireza Forghani, Curtis Hickmott, Victoria Hutten, Houman Bedayat, Christopher Wohl, Brian Grimsley, Brian Coxon, and Anoush Poursartip
Published in May 2018
Numerical and Experimental Study of Local Resin Pressure for the Manufacturing of Composite Structures and Their Effect on Porosity
Houman Bedayat, Alireza Forghani, Curtis Hickmott, Frank Palmieri, Brian Grimsley, Brian Coxon, Goran Fernlund, and Anoush Poursartip
Published in May 2018
Slit Tape Buckling and AFP Defect Prediction
Sayata Ghose, Kevin Malik, Brice Johnson
Published in May 2018
Simulating Prepreg Tack in AFP Process
Alireza Forghani, Curtis Hickmott, Houman Bedayat, Christopher Wohl, Brian Grimsley, Brian Coxon, Anoush Poursartip
Published in October 2017
Tack Measurement of Prepreg Tape at Variable Temperature and Humidity
Christopher J. Wohl, Frank L. Palmieri, Alireza Forghani, Curtis Hickmott, HoumanBedayat, Brian Coxon, Anoush Poursartip, Brian W. Grimsley
Published in September 2017
A Physics-Based Modelling Framework for Simulation of Prepreg Tack in AFP process
Alireza Forghani, Curtis Hickmott, Houman Bedayat, Christopher Wohl, Brian Grimsley, Brian Coxon, Anoush Poursartip
Published in May 2017
Automated Fiber Placement Process Characterization to Aid Defect Prediction
Sayata Ghose, Kevin Malik, Brice Johnson, Chelsea Roberts and Serhiy Sokolenko
Published in May 2017
Efficient Manufacturing through Process Simulation in the NASA Advanced Composites Project
Grimsley, B.W
Published in August 2016
2C24 Closed-Loop Control
Design and Control of an Arrayed Infrared (AIR) Heater for Accurate Heating Control During Automated Fiber Placement
Benjamin L. C. Greenberg
Published in November 2019
Design and Control of an Arrayed Infrared (AIR) Heater for Accurate Heating Control During Automated Fiber Placement
Benjamin Greenberg
Published in May 2019
Closed Loop Control of AFP Heating
Brice A. Johnson, Samuel F. Pedigo, John Z. Lin, Sayata Ghose
Published in May 2018
Numerical Simulation of AFP Nip Point Temperature Predication for Complex Geometries
Kaishu Xia, Ramy Harik, Jeremy Herrera, Josh Patel, and Brian Grimsley
Published in May 2018
2C25 Sandwich Model
A Consortium Approach for Consolidation Modeling
Pavel Šimáček and Suresh G. Advani
Published in 2020
Modeling And Simulation of The Co-Cure Of Honeycomb Core Sandwich Structures
Daniel Zebrine, Pavel Šimáček, Mark Anders, Navid Niknafs Kermani, Suresh Advani, and Steven Nutt
Published in May 2020
Modeling of Core Crush Phenomenon During the Processing of Honeycomb Sandwich Panels
Sanesh Iyer, Lucie Riffard, Tara Baker, Marta Elleby, Pascal Hubert
Published in May 2020
NDE Inspection of AFP Manufactured Cylinders Using an Intelligent Segmentation Algorithm
Christopher Sacco, Anis Baz Radwan, Andrew Anderson, Ramy Harik
Published in May 2020
Porosity Predictions during Co-cure of Honeycomb Core Prepreg Sandwich Structures
Navid Niknafs, et al.
Published in May 2020
A Simple Analysis Tool to Simulate the Co-cure of Honeycomb Core Composite Sandwich Structures
Niknafs Kermani, N., Simacek, P., Zebrine, D., Advani, S.G., and Nutt, S.
Published in May 2019
Effects of Material and Processing Parameters on Bond-Line Quality in Co-Curing Honeycomb Sandwich Composites
Wenping Zhao, John Gangloff, Milan Mitrovic, Shaahin Amini
Published in May 2019
Understanding and Modeling the Co-cure of Honeycomb Core Sandwich Structures
Centea, T., Simacek, P., Anders, M., Niknafs Kermani, N.
Published in May 2019
Processing Parameters Affecting Core Crush in Honeycomb Panels
Marta Elleby, Tara Baker, Sayata Ghose, and Andrew Modin
Published in May 2019
Process Diagnostics for Co-Cure of Sandwich Structures Using In Situ Visualization
Anders, M., Zebrine, D., Centea, T., and Nutt, S.R.
Published in January 2019
Permeability of Cured Composite Skins Produced using Co-Cure over Honeycomb Core
Palit, T., Centea, T., Anders, M., Zebrine, D., and Nutt, S.
Published in 2018
A Numerical Model to Simulate Void Dynamics during Processing of Honeycomb Core Sandwich Structures with Prepreg Face-Sheets
Niknafs Kermani, N., Simacek, P., Erdal, M., and Advani, S.G.
Published in Septemer 2018
Adhesive Bond-Line Formation During Co-Cure of Honeycomb Sandwich Structures
Zebrine, D., Anders, M., Centea, T., and Nutt, S.R.
Published in May 2018
Through-Thickness Gas Permeability of Prepreg Facesheets During Co-Cure of Honeycomb Core Sandwich Structures
Mark Anders, Timotea Centea
Published in May 2018
In-Situ Observations and Pressure Measurements for Autoclave Co-Cure of Honeycomb Core Sandwich Structures
Mark Anders, Daniel Zebrine, Timotei Centea, and Steven R. Nutt
Published in November 2017
Honeycomb Sandwich Structures: Materials and Manufacturing
Centea, T. and Nutt, S.R.
Published in September 2017
In-Situ Observations and Pressure Measurements for Autoclave Co-Cure of Honeycomb Core Sandwich Structures
Mark Anders, Daniel Zebrine, Timotei Centea, and Steven R. Nutt
Published in June 2017
Co-Cure Process Characterization to Aid Defect Prediction
Lisa C. Carlson, Sayata Ghose, Michael P. Thompson, Roberto J. Cano and Brian W. Grimsley
Published in May 2017
Facesheet Consolidation During Autoclave Co-Cure of Honecomb Core Sandwich Structures
Timotei Centea, Dan Zebrine, Mark Anders, Steven R. Nutt
Published in May 2017
Manufacturing of Honeycomb Core Sandwich Structures: Film Adhesive Behavior Versus Cure Pressure and Temperature
Centea, T., Zebrine, D., Anders, M., Elkin, C., and Nutt, S.R.
Published in September 2016
2C26 Bonding
Analysis of Surface Effects of Photochemistry Through the Kinetics Related to Electron Photo-emissive Processes from Substrates
Tom Yost, Rodolfo Ledesma, John W. Connell and frank Palmieri
Published in 2020
Picosecond Laser Surface Treatment and Analysis of Thermoplastic Composites for Structural Adhesive Bonding
Rodolfo Ledesma, Frank L. Palmieri Yi Lin, John W. Connell, Marcus Belcher, Daniel Ferriell, and Suzanne Thomas
Published in 2020
Recent Advances in LIBS for Real-Time Detection of Silicone Contaminants on CFRP Surfaces
Rodolfo Ledesma, Frank L. Palmieri and John W. Connell
Published in June 2020
Surface Functionalization of Automated Fiber Placement Manufactured Composites by Atmospheric Pressure Plasma Jet
Ibrahim Sarikaya, Malik Tahiyat, Ramy Harika, Tanvir Farouk, and John Connell
Published in June 2020
Advanced Laser Surface Treatment Technique for Removal of Contaminants in Composite Adhesive Bonding
Danielle Grolman, Daniel G. Goberman, Wenping Zhao, Milan Mitrovic, Xiaomei Fang, Rodolfo Ledesma, John W. Connell
Published in May 2020
Laser Induced Breakdown Spectroscopy for Real-Time Detection of Trace Silicone Contaminants on Polymer Composite Surfaces
Rodolfo Ledesma, Frank L. Palmieri and John W. Connell
Published in May 2020
Picosecond Laser Surface Treatment and Analysis of PEEK Composites for Structural Adhesive Bonding
Rodolfo Ledesma, Frank L. Palmieri Yi Lin, John W. Connell, Marcus Belcher, Daniel Ferriell, and Suzanne Thomas
Published in May 2020
Process Control of Laser Surface Treatment for Robust Bonding of Composite Aerostructure
Eileen O. Kutscha, Rodolfo I. Ledesma, Frank L. Palmieri, Kay Y. Blohowiak, John W. Connell
Published in May 2020
Surface Analysis Methods for Process Control of Composite Laser Treatment for Robust Bonding and Adhesion
Eileen Kutscha, Kay Blohowiak, Rodolfo Ledesma, Frank L. Palmieri, John W. Connell
Published in May 2020
Surface Treatment Techniques on Composite-to-Titanium Hyrid Bonding
Xiaomei Fang, Chris Hertel, John Riehl, Dan Goberman, Wenping Zhao, John Connell
Published in May 2020
Laser Induced Breakdown Spectroscopy of Polymer Matrix Composites for Real-Time Analysis of Trace Surface Contaminants: A Review
Rodolfo Ledesma, Frank L. Palmieri and John W. Connell
Published in April 2020
A Review of LIBS for Real-Time Detection of Trace Silicone Contaminants on CFRP Surfaces
Rodolfo Ledesma, Frank L. Palmieri and John W. Connell
Published in February 2020
Enabling Robust Bonding and Adhesion Using Analysis Tools for Detection of Composite Laser Surface Treatment
Eileen O. Kutscha, Rodolfo Ledesma, Frank Palmieri, Kay Y. Blohowiak, John W. Connell
Published in February 2020
Surface Analysis Methods for Process Control of Composite Laser Treatment for Robust Bonding and Adhesion
Eileen Kutscha, Kay Blohowiak, Rodolfo Ledesma, Frank L. Palmieri, John W. Connell
Published in February 2020
LAR-19492-1: Automated ultrasonic scanning system for in-situ composite cure monitoring and defect detection in an extreme environment
T.B. Hudson, F.L. Palmieri, T.B. Abbot, J. Seebo, and E. Burke
Published in 2019
Optimized Surface Treatment of Aerospace Composites using a Picosecond Laser
Frank L. Palmieri, Rodolfo I. Ledesma, Joseph G. Dennie, Teersa J. Kramer, Yi Lin, John W. Hopkins, Christopher J. Wohl and John W. Connell
Published in October 2019
LAR 19091-1 A Method For Quality Control Of Surface Treatment Using Laser Induced Breakdown Spectroscopy
Eileen Kutscha, Kay Blohowiak, Rodolfo Ledesma, john Hopkins, Frank Palmieri and John Connell
Published in September 2019
Optimization of Picosecond Laser Parameters for Surface Treatment of Aerospace Composites Using a Design of Experiments (DoE) Approach
Frank L. Palmieri, Rodolfo I. Ledesma, Joseph G. Dennie, Teersa J. Kramer, Yi Lin, John W. Hopkins, Christopher J. Wohl and John W. Connell
Published in September 2019
Robust Bonding Through Process Control
Eileen Kutscha, Kay Y. Blowhowiak, Marc J. Piehl and John W. Connell
Published in June 2019
Advanced Surface Treatment Techniques for Removal of Contaminants in Composite Adhesive Bonding
Wenping Zhao, Danielle Grolman, Gurbinder, Sarao, Milan Mitrovic, Xiaomei Fang and John Connell
Published in May 2019
Atmospheric Pressure Plasma Jet Treatment for Adhesion Improvement
Ibrahim Sarikaya, Malik Tahiyat, Ramy Harik, Tanvir Farouk, John Connell, Peter Gilday
Published in May 2019
Optically Enhanced Bonding Workstatioin for Robust Bonding
Eileen O. Kutscha, Kay Y. Blohowiak, Vicki Wu, Marc J. Piehl
Published in May 2019
Plasma Surface Functionalization of AFP Manufactured Composites for Improved Adhesive Bond Performance
Ibrahim Sarikaya, Malik Tahiyat, Ramy Harik, Tanvir Farouk, John Connell, And Peter Gilday
Published in May 2019
Surface Functionalization of Automated Fiber Placement Manufactured Composites by Atmospheric Pressure Plasma Jet
Ibrahim Sarikayaa, Malik Tahiyata, Ramy Harika, Tanvir Farouka, and John Connellb
Published in May 2019
LAR-19616-1 Laser Surface Treatment on Stainless Steel and Nickel Alloys for Adhesive Bonding
Xiaomei Fang, Chris Hertel, John Riehl, John Connell, Frank Palmieri and John Hopkins
Published in May 2019
Plasma Surface Functionalization of AFP Manufactured Composites for Improved Adhesive Bond Performance
Ibrahim Sarikaya
Published in February 2019
Correlation of Trace Silicone Contamination Analyses on Epoxy Composites Using XPS and LIBS
Rodolfo Ledesma, Frank Palmieri, Brooke Campbell, William Yost, James Fitz-Gerald, Giles Dillingham, and John Connell
Published in November 2018
Assessment of Adhesive Bond Strength from Ultrasonic Tone-Bursts
John H. Cantrell
Published in October 2018
Relationship between Adhesive Bonding Strength and Surface Contamination Levels of Polydimethylsiloxane on Carbon Fiber Reinforced Polymers
Rodolfo I. Ledesma, William T. Yost, Frank L. Palmieri, Daniel J. Cataldo, and John W. Connell
Published in August 2018
Development of a Kinetics-based Model for Measurement and Characterization of Surface Contaminant Concentrations on Carbon-based Composite Surfaces
Tom Yost, Rodolfo Ledesma, Dan Perey Frank Palmieri and John W. Connell
Published in July 2018
Optically Stimulated Electron Emission Analysis of Surface Contamination Levels on Epoxy Composites and Effect on Failure Mode of Adhesively Bonded Specimens
Rodolfo Ledesma, W Yost, Frank L. Palmieri, John W. Connell
Published in July 2018
Characterization of Picosecond Laser Treatment on Epoxy Composites by Design of Experiement (DOE) Method
Frank L. Palmieri, Rodolfo I. Ledesma, Joseph G. Dennie, Teersa J. Kramer, Christopher J. Wohl, Yi Lin, John W. Hopkins, John W. Connell
Published in May 2018
Determination of Trace Silicone Contamination on Composites by Quantitative XPS and LIBS
Rodolfo I. Ledesma, Giles Dillingham, Brooke Campbell, Frank Palmieri, William Yost, Yi Lin, James Fitz-Gerald, and John Connell
Published in May 2018
Effectiveness of Surface Treatment Techniques for Composite Bonding with Different Contamination Levels
Xiaomei Fang, Gurbinder S. Saroa, Wenping Zhao, Daniel G. Goberman, John W. Connell
Published in May 2018
Optimization of Picosecond Laser Parameters for Surface Treatment of Composites Using a Design of Experiments (DOE) Approach
Frank L. Palmieri, Rodolfo I. Ledesma, Joseph D. Dennie, Teresa J. Kramer, Yi Lin, John W. Hopkins, Christopher J. Wohl, and John W. Connell
Published in May 2018
Robust Bonding Through Process Control
Eileen O. Kutscha, Kay Y. Blohowiak, Marc Piehl, and John W. Connell
Published in May 2018
LAR 19193-1, Adsorbate Analsisi Usng Optically Stimulated Electron Emmission
William Yost, Dan Perey, Paul Petzar, John Connell,Rodolfo Ledesma, and Josh Brown
Published in May 2018
Characterization of Pulsed-Laser Surface Preparation of Epoxy Composites by Design of Experiments Method
Frank L. Palmieri, Rodolfo I. Ledesma, Joseph D. Dennie, Christopher J. Wohl, Yi Lin, John W. Hopkins, John W. Connell
Published in February 2018
Laser Ablation Surface Treatment of Structural Aerospace Composites and Metal Alloys for Adhesive Bonding
John Connell, Yi Lin, Christopher Wohl, John Hopkins, Rodolfo Ledesma, Frank Palmieri
Published in February 2018
Characterization of Picosecond-Laser Surface Process on Epoxy Composites by Design of Experiments Method
F Palmieri, R Ledesma, J Dennie, C Wohl, Yi Lin, J Hopkins, J Connel
Published in February 2018
Detection of Trace Silicone Contamination on CFRP Surfaces by Picosecond LIBS
Rodolfo I. Ledesma, Frank L. Palmieri, Joseph D. Dennie, James Dowdell, James M. Fitz-Gerald, John W. Connell
Published in February 2018
Determination of Cross-Sectional Area of Focused Picosecond Gaussian Laser Beam
Rodolfo Ledesma; James Fitz-Gerald; Frank Palmieri; John Connell
Published in February 2018
LAR 19091-1, Laser Surface Treatment and Spectroscopic Analysis System
Rodolfo Ledesma, John Hopkins, Frank Palmieri and John Connell
Published in August 2017
Contamination and Surface Preparation Effects on Composite Bonding
Kutscha, Eileen O.; Vahey, Paul G.; Belcher, Marcus A.; VanVoast, Peter J.; Grace, William B.; Blohowiak, Kay Y.; Palmieri, Frank L.; Connell, John W.
Published in May 2017
Contamination Effect on Composite-To-Metal Adhesive Bond Performance
Xiaomei Fang, Joe Jalowka, John Riehl, Wenping Zhao, Dan Goberman
Published in May 2017
Effects of Contamination on Surface Chemistries and Performance of Aerospace Structural Composites Bonded with Various Adhesives
Eileen O. Kutscha, Paul G. Vahey, Marcus A. Belcher, Peter J. VanVoast, William B.Grace, Kay Y. Blohowiak, Frank L. Palmieri and John W. Connell
Published in May 2017
Picosecond Pulsed Laser Ablation for the Surface Preparation of Epoxy Composites
Palmieri, Frank; Ledesma, Rodolfo; Fulton, Tayler; Arthur, Alexandria; Eldridge, Keishara; Thibeault, Sheila; Lin, Yi; Wohl, Chris; Connell, John
Published in May 2017
Detection Of Contamination and Surface Preparation Effects on Bonding of Aerospace Structural Composites
Eileen O. Kutscha, Paul G. Vahey, Marcus A. Belcher, Peter J. VanVoast, William B.Grace, Kay Y. Blohowiak, Frank L. Palmieri and John W. Connell
Published in February 2017
Surface Characterization of Carbon Fiber Reinforced Polymers by Single-Shot Picosecond Laser Induced Breakdown Spectroscopy
Rodolfo Ledesma , Frank L. Palmieri, John W. Connell, William T. Yost, James Fitz-Gerald
Published in February 2017
Surface Monitoring of CFRP Structures for Adhesive Bonding
Ledesma, Rodolfo; Palmieri, Frank L.; Yost, William T.; Connell, John W.; Fitz-Gerald, James M.
Published in February 2017
Laser Ablation Surface Preparation for Adhesive Bonding of Carbon Fiber Reinforced Epoxy Composites
Palmieri, F.L., Belcher, M.L., Wohl, C.J., Blohowiak, K.Y., and John W. Connell
Published in 2016
Controlled Contamination of Epoxy Composites with PDMS and Removal by Laser Ablation
Palmieri, Frank; Ledesma, Rodolfo; Cataldo, Daniel; Lin, Yi; Wohl, Christopher; Gupta, Mool; Connell, John
Published in May 2016
Laser Ablation to Remove and Detect Silicone Contaminants on Epoxy Matrix Composite
Frank Palmieri, Rodolfo Ledesma, Dan Cataldo, Nikita Budwal, Joseph Dennie, Yi Lin, John Hopkins, Christopher Wohl, John Connell
Published in May 2016
An Investigation on the Use of a Laser Ablation Treatment on Metallic Surfaces and the Influence of Temperature on Fracture Toughness of Hybird Co-cured Metal-Polyimide Interfaces
John W. Connell, Frank L. Palmieri, H.T.X. Truong, O.O. Ochoa, and D.C. Lagoudas
Published in February 2016
Laser Surface Preparation of Epoxy Composites for Secondary Bonding: Optimization of Ablation Depth
Frank L. Palmieri, John Hopkins, Christopher J. Wohl, Yi Lin, John W. Connell, Marcus A. (Tony) Belcher, and Kay Y. Blohowiak
Published in May 2015
Modification of Surface Energy via Direct laser Ablative Surface Patterning
Christopher J. Wohl, Marcus A. (Tony) Belcher, John W. Connell, and John Hopkins
Published in March 2015
2C27 Laminate Cure Model
2020 (2C27 Laminate Cure Model)
A Validation Study for Modeling Strategies Designed to Predict Cure Defects Including Porosity and Wrinkling During Composite Processing
Curtis W. Hickmott, Paulo Silva, Alireza Forghani, Frank L. Palmieri, Brian W. Grimsley, Brian R. Coxon, Goran Fernlund, Anoush Poursartip
Published in May 2020
In-Process Ultrasonic Cure Monitoring System for Defect Detection and Localization in Composites
T.B. Hudson, K.M. Serrano, A. Amador, T.B. Abbot, and F.L. Palmieri
Published in May 2020
Resin Pressure and Porosity Measurements to Validate an Epoxy Laminate Cure Process Model
Frank L. Palmieri, Curtis Hickmott, Thammaia Sreekantamurthy, Alireza Forghani, Brian Coxon, Brian W. Grimsley, Anoush Poursartip
Published in May 2020
2019 (2C27 Laminate Cure Model)
Plasma Cure Process Defects in Composite Structures with Sharp Radii
Justin B. Alms, John J. Gangloff, John Walker, Danielle Grolman
Published in May 2019
A Numerical and Experimental Approach for Modeling Porosity Due to Entrapped Air and Volatiles Off-gassing During Manufacturing of Composite Structures
Curtis Hackmott, Alireza Forghani, Victoria Hutten, Frank L. Palmieri, Brian W. Grimsley, Brian Coxon, Goran Fernlund, Anoush Poursartip
Published in May 2019
Design of an Automated Ultrasonic Scanning System for In-situ Composite Cure Monitoring and Defect Detection
Tyler B. Hudson, Trenton B. Abbot, Frank L. Palmieri, Jeffrey P. Seebo, Eric R. Burke
Published in May 2019
Career Transition: From Student to Researcher
Tyler B. Hudson, Trenton B. Abbot, Frank L. Palmieri, Jeffrey P. Seebo, Eric R. Burke
Published in May 2019
Cure Process Defects in Composite Laminates
Kevin Malik, Sayata Ghose, Geoffrey Butler, and Kurtis Willden
Published in May 2019
Evaluation of an Alternate Method for Determining Yield Strength Offset Values for Selective Laser Sintered Polymeric Materials
Chesley Henry, Keith Rupel, Charles Park, Joseph Costanzo, Cary Kaczowka, Kevin Malik, and Sayata Ghose
Published in May 2019
2018 (2C27 Laminate Cure Model)
LAR-19194-1: Guided wave-based system for cure monitoring of composites using piezoelectric discs and fiber Bragg gratings (FBGs)/phase-shifted fiber Bragg gratings (PS-FBGs)
T.B. Hudson, F.G. Yuan, N. Auwaijan, and F.L. Palmieri
Published in 2018
Coupon Level Mechanical Testing for Polymer Based Additive Manufacturing
Chul Y. Park, Keith Rupel, Chelsey Henry, and Upul Palliyaguru
Published in November 2018
Guided wave-based system for real-time cure monitoring of composites using piezoelectric discs and phase-shifted fiber Bragg gratings
Tyler B Hudson, Nicolas Auwaijan, and Fuh-Gwo Yuan
Published in August 2018
New Test Coupon Design for Polymer Based AM
Chul Y. (Charles) Park (Boeing)
Published in July 2018
Cure Defects in Tapered Laminate
Wendy Lin, Alexander Vallee, Mitch Smith, Gregory Gemeinhardt
Published in May 2018
Cure Process Defects in Composite Laminates
Amy Bahe, Sayata Ghose, Kurtis Willden
Published in May 2018
Automated In-Process Cure Monitoring of Composite Laminates Using a Guided Wave-Based System With High-Temperature Piezoelectric Transducers
Tyler Hudson, Fuh-Gwo Yuan
Published in February 2018
2017 (2C27 Laminate Cure Model)
LAR-18973-1: Automated guided wave system for in-process cure monitoring of CFRP composite laminates
T.B. Hudson, F.G. Yuan, and B.W. Grimsley
Published in 2017
Real-time Cure Monitoring of Composites Using a Guided Wave-based System with High Temperature Piezoelectric Transducers, Fiber Bragg Gratings, and Phase-shifted Fiber Bragg Gratings
T.B. Hudson
Published in 2017
Simulation of gas and resin transport mechanisms in manufacturing process of composite structures and their effect on porosity
Houman Bedayat, Martin Roy, Alireza Forghani, Curtis Hickmott, Frank Palmieri, Brian Grimsley, Brian Coxon, Goran Fernlund, Anoush Poursartip
Published in October 2017
Detection and Quantification of Composite Manufacturing Defects Using Guided Waves
Hudson, T.B., Hou, T.H., Grimsley, B.W., and Fuh Gwo Yuan
Published in June 2017
An Efficient Modelling Approach for Prediction of Porosity Severity in Composite Structures
Bedayat, Houman; Forghani, Alireza; Hickmott, Curtis; Roy, Martin; Palmieri, Frank; Grimsley, Brian; Coxon, Brian; Fernlund, Goran
Published in May 2017
2016 (2C27 Laminate Cure Model)
Composite Cure Process Modeling and Simulations Using COMPRO and Validation of Residual Strains Using Fiber Optic Sensors
Sreekantamurthy, T., Hudson, T.H., Hou, T.H., and B. Grimsley
Published in September 2016
Development of a Fully Automated Guided Wave System for In-process Cure Monitoring of CFRP Composite Laminates
Hudson, T.B., B.W. Grimsley, and F.G. Yuan
Published in September 2016
Imaging of Local Porosity/Voids Using a Fully Non-Contact Air-Coupled Transducer and Laser Doppler Vibrometer System
Hudson, T.B., Hou, T.H., Grimsley, B.W., and Fuh Gwo Yuan
Published in August 2016
Latent Hardeners for the Assembly of Epoxy Composites
Palmieri, Frank; Wohl, Christopher J.; Connell, John W.; Mercado, Zoar; Galloway, Jordan
Published in February 2016
2015 (2C27 Laminate Cure Model)
Detection of CFRP Composite Manufacturing Defects Using a Guided Wave Approach
Hudson, T.B., Hou, T.H., Grimsley, B.W., and Fuh Gwo Yuan
Published in May 2015
2014 (2C27 Laminate Cure Model)
Cure Cycle Design Methodology for Fabricating Reactive Resin Matrix Fiber Reinforced Composites: A Protocol for Producing Void-free Quality Laminates
Hou, Tan-Hung
Published in Septebmer 2014
