Abstract
The high strain rate response of ultra high molecular weight polyethylene (UHMWPE) laminae and laminates is of interest to support computational modeling of applications where impact damage may occur. In this study, the efficacy of utilizing time-temperature superposition principles (tTSP) to determine the high strain rate response of UHMWPE composites is investigated. Constituent and composite tensile properties are measured at various temperatures and strain rates. Testing was completed at thermo-rheologically equivalent temperature-strain rate combinations to evaluate the effectiveness and limitations of the shifting approach. Analysis of modulus and failure data indicated that at the composite level, tTSP may not be applicable, while at the lamina level tTSP may be applicable, therefore high strain rate properties are estimated.
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Umberger, P.D., Case, S.W., Cook, F.P. (2011). Time-temperature Superposition and High Rate Response of Thermoplastic Composites and Constituents. In: Proulx, T. (eds) Time Dependent Constitutive Behavior and Fracture/Failure Processes, Volume 3. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-9794-4_22
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DOI: https://doi.org/10.1007/978-1-4419-9794-4_22
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