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Effect Of Material Orientation On The Impact Response Of Graded Cellular Materials, Abigail Wohlford
Effect Of Material Orientation On The Impact Response Of Graded Cellular Materials, Abigail Wohlford
Theses and Dissertations
In this study, the effect of layer stacking on the energy absorption characteristics of density-graded cellular polymers subjected to high velocity impact is investigated experimentally. The focus in the present work is to characterize the constitutive response and deformation mechanisms of these Functionally Graded Foam Materials (FGFM) using full-field measurements. Uniform foam Quasi-static and dynamic testing of uniform foam specimens are completed for each nominal density used in the layered foam samples. The low strain-rate experiments are performed in order to determine the mechanical properties of foam specimens. The high-rate experiments for homogenous foam specimens were completed to further characterize …