NASA ULI – Reports and Publications

Annual Reports

• Annual Progress Report Sept. 1, 2021 – August 31, 2022

Publications

• “Highly-Aligned Discontinuous Fiber Composites (TuFF): Progress and Challenges”, SAMPE 2022 Featured Speaker: Shridhar Yarlagadda.
• Parambil, Nithin K., Chen, B., Deitzel, J., Gillespie, Jr., J.W., “A Methodology for Predicting Processing Induced Thermal Residual Stress in Thermoplastic Composite at the Microscale”, Composites Part B, volume 231, 109562, 2021.
• Simacek P., Advani S. G., Gillespie Jr. J. W., “Modeling Short Fiber Deformation in Dilute Suspension: Fiber Deposition”, Composites Science and Technology, volume 218, 109149, 2021.
• Fidlow, H., Cender, T. “Extentional Viscosity of Thermoplastic TuFF Composite in Stretch Forming Processes”, SAMPE 2022, Charlotte, NC, May 23-26, 2022.
• Cender, Thomas A., Fidlow, H., Yarlagadda, S., Heider, D., Simacek, P., Advani, S.G., Gillespie, Jr., J.W., “Forming Limits of TuFF Composites in Stretch”, SAMPE 2022, Charlotte, NC, May 23-26, 2022.
• Chen, Branndon R., Prakash, K., Yarlagadda, S., Gillespie, Jr., J.W., “Fatigue Performance of Thermoplastic TuFF Composites”, SAMPE 2022, Charlotte, NC, May 23-26, 2022.
• Fussel, Lukas, Cender, T.A., Austermann, V., Gillespie, Jr., J.W., Heider, D., “Tow Steering of Stretchable TuFF Thermoplastic Tape with Laser Tape Placement”, SAMPE 2022, Charlotte, NC, May 23-26, 2022.
• Abu-Obaid, Ahmad, Ganesh, R., Gillespie, Jr., J.W., “Investigation of Size and Spatial Distribution of Defects in S2 Glass Fibers Using Continuous Bending Test Method”, SAMPE 2022, Charlotte, NC, May 23-26, 2022.
• Parambil, Nithin K., Chen, B.R., Deitzel, J.M., Gillespie, Jr., J.W., Vo, L.T., Sarosi, P., “Predicting Processing Induced Residual-Stresses in Carbon-Fiber-Thermoplastic Micro-Composites”, ASC Conference, Virtual Event, Sept. 19-22, 2021.
• Chen, Branndon R., N.K. Parambil, J. Deitzel, J.W. Gillespie, Jr., L.T. Vo, P. Sarosi, “Interfacial Shear Strength (IFSS) and Absorbed Energy versus Temperature in Carbon Fiber-Thermoplastic Composites via Single Fiber Pullout Testing,” ASC 2020, https://asc2020nyc/ September 14-17, 2020.
• Yarlagadda, Shridhar, Deitzel, J.M., Heider, D., Tierney, J. and Gillespie, Jr., J. W.,“Tailorable Universal Feedstock for Forming (TuFF): Overview and Performance:, SAMPE 2019, Charlotte, NC.
• Heider, Dirk, Tierney, J., Henchir, M., Gargitter, V., Yarlagadda, S., Gillespie Jr., J. W., Sun, J., Sietins, J., and Knorr, D.,“Microstructural Evaluation of Aligned, Short Fiber TuFF Material”, SAMPE 2019, Charlotte, NC.
• Yarlagadda, Shridhar, Advani, S., Deitzel, J., Heider, D., Molligan, D., Roseman, D., Simacek, P., Tierney, J., and Gillespie, Jr., J. W., “Formability of TuFF Composite Blanks”, SAMPE 2019, Charlotte, NC
• Heider, D., Tierney, J., Deitzel, J., Kubota, M., Thiravong, J., Gargitter, V., Burris, W., Morris, J., Shevchenko, N., Yarlagadda, S., and Gillespie, Jr., J. W., “Closed Loop Recycling of CFRP into Highly Aligned High Performance Short Fiber Composites Using The TuFF Process”, SAMPE 2019, Charlotte, NC.