High strain rate out-of-plane compression properties of aramid fabric reinforced polyamide composite

Published on Aug 1, 2016in Polymer Testing3.275
· DOI :10.1016/J.POLYMERTESTING.2016.06.006
Xiuyang Qian2
Estimated H-index: 2
(Hunan University),
Hongxin Wang6
Estimated H-index: 6
(Hunan University)
+ 1 AuthorsGuilin Wen22
Estimated H-index: 22
(Hunan University)
Abstract The composite-structure protective systems in head-on collision with objects are largely subjected to dynamic compression load along the thickness of composite structure. A typical plain weave aramid fabric reinforced polyamide (PA) composite, which is defined as one of single polymer composites (SPCs), is addressed in this paper. Firstly, in the process of sample preparation, processing characteristics of the single polymer composites are skillfully achieved and discussed using differential scanning calorimetry (DSC) and capillary rheometer. Secondly, the out-of-plane compression properties of the composite are studied on Split Hopkinson Pressure Bar (SHPB) apparatus in the strain rate range of 400–1200s −1 . Effects of fiber content and strain rate on dynamic off-plane compression properties are investigated and quasi-static properties are obtained on a universal testing machine as a comparison. Results provide a basis for selecting composite composition and lay-up for designing armor with improved impact resistance. Additionally, penetration of the resin through the fabric is observed by the digital microscope and the internal damage of the laminates is qualitatively predicted by the microstructure of the internal fabric yarns.
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