首页|Low-Velocity Impact and Compression after Impact (CAI) Behaviors of Carbon-Aramid/Epoxy Hybrid Braided Composite Laminates

Low-Velocity Impact and Compression after Impact (CAI) Behaviors of Carbon-Aramid/Epoxy Hybrid Braided Composite Laminates

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Low-velocity impact and in-plane axial compression after impact (CAI) behaviors of carbon-aramid/epoxy hybrid braided composite laminates were investigated experimentally.The following three different types of carbon-aramid/epoxy hybrid braided composite laminates were produced and tested:(a) inter-hybrid laminates,(b) sandwich-like inter-hybrid laminates,and (c) unsymmetric-hybrid laminates.At the same time,carbon/epoxy braided composite laminates were used for comparisons.Impact properties and impact resistance were studied.Internal damages and damage mechanisms of laminates were detected by ultrasonic C-scan and B-scan methods.The results show that the ductility index (DI)values of three kinds of hybrid laminates aforementioned are 37％,4％ and 120％ higher than those of carbon/epoxy laminates,respectively.The peak load of inter-hybrid laminates is higher than that of sandwich-like inter-hybrid laminates and unsymmetric-hybrid laminates.The average damage area and dent depths of inter-hybrid laminates are 64％ and 69％ smaller than those of carbon/epoxy laminates.Those results show that carbon-aramid/epoxy hybrid braided composite laminates could significantly improve the impact properties and toughness of non-hybrid braided composite laminates.

compositebraided compositecarbon/epoxycarbon-aramid/epoxy hybrid laminated compositelow-velocity impactin-plane axial compressioncompression after impact (CAI)

CAO Hongxue、SUN Ying、TANG Mengyun、DING Xu、CHEN Li

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School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China

Key Laboratory of Advanced Textile Composite Materials of Ministry of Education, Institute of Composite Materials,Tiangong University, Tianjin 300387, China

National Natural Science Foundation of ChinaTianjin National Natural Science Foundation,China

no 11102133no 19JCYBJC18300

2020

东华大学学报(英文版)
东华大学

东华大学学报(英文版)

影响因子：0.091
ISSN：1672-5220
年,卷(期)：2020.37(1)
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