Effect of trigger configuration on the crashworthiness characteristics of natural silk epoxy composite tubes |
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| Affiliation: | 1. Department of Mechanical & Materials Engineering, Universiti Kebangsaan Malaysia, 43600 Bangi, Malaysia;2. Department of Mechanical and Manufacturing Engineering, Aalborg University, DK-9220 Aalborg, Denmark;1. Key Laboratory of Traffic Safety on Track (Central South University), Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China;2. Joint International Research Laboratory of Key Technology for Rail Traffic Safety, Central South University, Changsha 410075, China;3. National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle, Central South University, Changsha 410075, China;4. State Key Laboratory of High-Performance Complex Manufacturing, Central South University, Changsha 410075, China;1. School of Engineering, Sun Yat-Sen University, Guangzhou City, 510006, China;2. State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha, 410082, China;3. Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong, China;4. Department of Mechanical Engineering, University of New Orleans, USA;1. College of Textiles, Donghua University, Shanghai 201620, PR China;2. Advanced Fibro-Science, Kyoto Institute of Technology, Kyoto 6068585, Japan;3. Key Laboratory of Textile Science & Technology, Ministry of Education, Shanghai 201620, PR China;4. Maruhachi Corporation, Fukui 9100276, Japan |
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| Abstract: | In the current study, the quasi-static compression test over natural silk epoxy composite tubes was performed using two different trigger mechanisms. The natural silk epoxy composite tubes used in this study consisted of 12 layers of woven natural silk as reinforcement and a thermoset epoxy resin as matrix. The natural silk epoxy composite tubes had lengths of 50 mm, and they were associated with external triggers, including four steel pieces located on the downside flat plate fixture and a plug trigger. The failure modes of the natural silk epoxy composite tubes were investigated using representative photographs taken during the quasi-static compression test. In addition to the load–displacement graphs, the crashworthiness characteristics of the natural silk epoxy composite tubes were exported. The results showed that the four-piece trigger mechanism changed the manner in which failure progressed i.e. from catastrophic to progressive. Plug trigger caused a significant reduction in load carrying capacity and energy absorption capability of specimens. The four-piece trigger retained energy absorption capability of specimens similar to the non-triggered ones, while both the reduction of peak load and increase in crash efficiency of these were observed to be significant. |
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| Keywords: | A Fabrics/textiles C Damage mechanics D Mechanical testing E Lay-up (manual/automated) Natural silk composite |
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