High strain rate out-of-plane compression properties of aramid fabric reinforced polyamide composite |
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| Institution: | 1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, PR China;2. College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, PR China;1. Structural Impact Laboratory (SIMLab), Department of Structural Engineering, NTNU, Norwegian University of Science and Technology, NO-7491, Trondheim, Norway;2. SINTEF Materials and Chemistry, Department of Materials and Nanotechnology, PB 124 Blindern, NO-0314, Oslo, Norway;1. Dept. of Aerospace Engineering, IIT Madras, Chennai, Tamilnadu, India;2. Dept. of Applied Mechanics, IIT Delhi, New Delhi, India;1. Department of Mechanical Engineering, The University of Michigan-Dearborn, 4901 Evergreen Road, Dearborn, MI 48128, USA;2. Materials Research and Advanced Engineering Department, Research and Innovation Center, Ford Motor Company, 2101 Village Road, Dearborn, MI 48124, USA |
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| 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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| Keywords: | Single polymer composites Hot compaction Compression property High strain rate Polymer testing |
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