4.7 Article

Enhanced impact energy absorption and failure characteristics of novel fully thermoplastic and hybrid composite bicycle helmet shells

期刊

MATERIALS & DESIGN
卷 209, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2021.110003

关键词

Helmet impact; Thermoplastic composite; Polypropylene; Hybrid composite; Acrylic Elium

资金

  1. Nanyang Technological University, Singapore [RCA18/46]
  2. Arkema, France [RCA18/46]
  3. A*STAR under the Research Innovation Enterprise (RIE) 2020 Plan, Advanced Manufacturing and Engineering (AME) Domain - Industry Alignment Fund - Pre-positioning (IAF-PP) Polymer Matrix Composites Programme [A19C9a0044]

向作者/读者索取更多资源

Current research has shown that fully thermoplastic and hybrid composite helmets exhibit significantly higher energy absorption capabilities compared to polycarbonate helmets, leading to improved safety. The usage of composite shells minimizes energy transfer to the foam attached to the human head, reducing the risk of critical and fatal head injuries.
Current research realize to develop a safer, lighter and higher energy absorbing fully thermoplastic (polypropylene fibres and acrylic Elium resin) and hybrid composite helmets (polypropylene/carbon hybrid and Elium resin) and perform the CPSC 1203 certification tests on different anvils. The failure and energy absorption mechanisms were studied and compared with widely used polycarbonate helmets (PC/EPS) and the composite shells manufactured with epoxy resin. The fully thermoplastic and hybrid composite shells have shown up to 65% of absorbed energy while the polycarbonate shells have absorbed a maximum of 13% of the absorbed energy. The usage of composite shells has lead to minimal energy transfer to the foam which is directly attached to the human head and provided improved safety. The high-speed camera has shown clear deformation of the thermoplastic composite shell owing to the ductile behaviour while the catastrophic failure with significant cracks was observed in the Epoxy-based composite shell. Considering the head injury criteria, the PC/EPS helmet showed the highest fatality rate (6%) when impacted on the flat anvil. The usage of fully thermoplastic and hybrid composite shell reduces the probability of critical and fatal injury by around 40% and 60% respectively when compared to PC/EPS configuration. (c) 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据