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Assessment of Delamination in Tensylon® UHMWPE Composites by Laser-induced Shock

Abstract : Ultra-High Molecular Weight Polyethylene (UHMWPE) composites are the result of recent developments in material research for ballistic protection due to their ability to absorb the kinetic energy of the bullet by various mechanisms of dissipation, among which an important one is delamination. In order to study this mechanism independently, the laser induced shock wave testing procedure has been used on thin Tensylon ® laminate samples. Laser-induced shock represents a modern approach that can be used for assessing the interlaminar bond strength between two plies of a composite material, in dynamic conditions, at high strain rates representative for a ballistic impact. Through this technique, a delamination failure stress threshold can be determined. In the present work, the laser induced shock technique was applied on the commercial UHMWPE material called Tensylon®. The delamination threshold of this material was determined by using the Novikov approach, and, compared to the literature, the results match the values determined by other means of measurement.
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Submitted on : Thursday, February 28, 2019 - 3:15:24 PM
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Cristina Luminita, M. Arrigoni, Lorena Deleanu, Marcel Istrate. Assessment of Delamination in Tensylon® UHMWPE Composites by Laser-induced Shock. Materiale Plastice, 2018, 55 (3). ⟨hal-02052595⟩



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