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An experimental investigation on low-velocity impact response of novel jute/rubber flexible bio-composite

机译：新型黄麻/橡胶柔性生物复合材料低速冲击响应的实验研究

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This paper presents an experimental investigation on low velocity impact (LVI) behaviour of flexible bio-composite laminates with different stacking sequence namely jute/rubber/jute (JRJ), jute/rubber/rubber/jute (JRRJ), jute/rubber/jute/rubber/jute (JRJRJ) and subjected to different impact energy levels using a conical shaped impactor. The performances of the proposed flexible composites are evaluated based on their energy absorption, peak force, coefficient of restitution (CoR), energy loss percentage (ELP) and failure behavior. Results indicated that JRJ provides better energy absorption and JRJRJ provides better damage resistance when subjected to LVI. Microscopic analysis revealed that the flexible composites fail mainly due to the tearing mechanism of the matrix as opposed to cracking in case of conventional stiff composites. It was also found that flexible composites are free from delamination. Compared to conventional stiff composites, there is no catastrophic failure observed in the proposed flexible composite. The overall performance evaluation of these proposed flexible composites indicates that these flexible composites can be potential sacrificial materials such as claddings used to protect primary structural components subjected to LVI. The systematic methodology employed in the present study serves as a benchmark for the effective utilization and selection of flexible composites for LVI applications.
机译：本文提出了对黄麻/橡胶/黄麻（JRJ），黄麻/橡胶/橡胶/黄麻（JRRJ），黄麻/橡胶/黄麻等不同堆叠顺序的柔性生物复合材料层压板的低速冲击（LVI）行为的实验研究。 /橡胶/黄麻（JRJRJ），并使用锥形冲击器承受不同的冲击能级。所提出的柔性复合材料的性能是基于其能量吸收，峰值力，恢复系数（CoR），能量损失百分比（ELP）和破坏行为进行评估的。结果表明，在进行LVI时，JRJ提供更好的能量吸收，JRJRJ提供更好的抗损伤性。微观分析表明，挠性复合材料的失效主要是由于基体的撕裂机理，与传统刚性复合材料的破裂相反。还发现柔性复合材料没有分层。与传统的硬质复合材料相比，在建议的软质复合材料中没有观察到灾难性的破坏。这些建议的柔性复合材料的总体性能评估表明，这些柔性复合材料可能是潜在的牺牲性材料，例如用于保护遭受LVI的主要结构部件的覆层。本研究中采用的系统方法学为有效利用和选择LVI应用的柔性复合材料提供了基准。

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