Abstract Crashworthiness plays a key role in energy absorption and hence in vehicle accidents. The energy absorption capacity of laminated composite materials is heavily investigated in the industry due to their low cost, corrosion resistance, and high strength to weight ratio. Thus, this paper experimentally investigates the effect of the addition of woven fiber laminates and fiber steel sandwich laminates on the strength and energy absorption capacity of PVC polymer tubes. The sandwich-structured composite is formed from two glass-fiber composite layers with a steel layer in between. Four normal and hybrid reinforcement configurations are proposed, evaluated, and compared to the benchmark unreinforced tube. The crashworthiness characteristics of the reinforced composite tubes were identified using quasi-static axial compression tests. The crushing parameters, in terms of load-displacement response, load-carrying capacity, Specific Energy (SE) absorption capability, and Crush Force Efficiency (CFE) were determined for each sample. Moreover, Scanning Electron Microscope (SEM) analysis was carried out to investigate the microstructures, which clearly indicate the fractured surfaces. The results show that the tube reinforced with a 1mm steel layer sandwiched between 2 layers and 4 layers of woven glass-fiber has the highest SE and CFE of 14 J/g and 0.91, respectively, while the tube reinforced with 7 layers of glass fiber layers only has the highest Initial Peak Load (IPF) of 139.36 kN.

中文翻译：

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纤维及纤维钢增强复合材料管耐撞性能试验研究

摘要 耐撞性在能量吸收中起着关键作用，因此在车辆事故中起着关键作用。层压复合材料的能量吸收能力由于其低成本、耐腐蚀和高强度重量比而在行业中得到了大量研究。因此，本文通过实验研究了添加编织纤维层压板和纤维钢夹层板对PVC聚合物管强度和能量吸收能力的影响。夹层结构复合材料由两层玻璃纤维复合材料层组成，中间有一层钢。提出、评估了四种普通和混合增强配置，并与基准未增强管进行了比较。使用准静态轴向压缩试验确定了增强复合管的耐撞特性。确定每个样品的破碎参数，如载荷位移响应、承载能力、比能 (SE) 吸收能力和破碎力效率 (CFE)。此外，还进行了扫描电子显微镜 (SEM) 分析以研究微观结构，这些微观结构清楚地表明了断裂表面。结果表明，夹在 2 层和 4 层编织玻璃纤维之间的 1mm 钢层增强管具有最高的 SE 和 CFE，分别为 14 J/g 和 0.91，而用 7 层玻璃纤维增​​强的管层只有 139.36 kN 的最高初始峰值负载 (IPF)。进行扫描电子显微镜 (SEM) 分析以研究微观结构，其清楚地表明断裂表面。结果表明，夹在 2 层和 4 层编织玻璃纤维之间的 1mm 钢层增强管具有最高的 SE 和 CFE，分别为 14 J/g 和 0.91，而用 7 层玻璃纤维增​​强的管层只有 139.36 kN 的最高初始峰值负载 (IPF)。进行扫描电子显微镜 (SEM) 分析以研究微观结构，其清楚地表明断裂表面。结果表明，夹在 2 层和 4 层编织玻璃纤维之间的 1mm 钢层增强管具有最高的 SE 和 CFE，分别为 14 J/g 和 0.91，而用 7 层玻璃纤维增​​强的管层只有 139.36 kN 的最高初始峰值负载 (IPF)。