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Energy absorption capacity of pseudoelastic fiber-reinforced composites

机译：拟弹性纤维增强复合材料的能量吸收能力

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摘要

Pseudoelastic fiber-reinforced metal matrix composite with enhanced ductility and energy absorption capacity was developed. This composite system relies on the distributed nature of large pseudoelastic strains to mitigate localization of inelastic deformation and failure, and thus mobilizes a major fraction of volume for effective energy absorption. The pseudoelastic fibers were made of Ni-Ti-Cr alloy used in conjunction with two different matrices, aluminum and copper. Tension and pull-out tests were performed to evaluate the ductility and energy absorption capacity of control and pseudoelastic fiber-reinforced composites. Experimental results confirmed the ability of pseudoelastic fibers to induce distributed inelastic deformation within metal matrix composites for realizing major gains in ductility and energy absorption capacity.
机译：开发了具有增强的延展性和能量吸收能力的伪弹性纤维增强金属基复合材料。该复合系统依靠大的伪弹性应变的分布特性来减轻非弹性变形和破坏的局限性，从而动员了很大一部分体积来有效吸收能量。准弹性纤维由Ni-Ti-Cr合金制成，与两种不同的基质（铝和铜）结合使用。进行了拉伸和拉拔试验，以评估对照纤维和假弹性纤维增强复合材料的延展性和能量吸收能力。实验结果证实了伪弹性纤维具有诱导金属基复合材料内部分布的非弹性变形的能力，从而实现了塑性和能量吸收能力的重大提高。

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