Fishing line artificial muscle reinforced composite for impact mitigation and on-demand damage healing

被引:16
作者
Zhang, Pengfei [1 ]
Li, Guoqiang [1 ,2 ]
机构
[1] Louisiana State Univ, Dept Mech & Ind Engn, Baton Rouge, LA 70803 USA
[2] Southern Univ, Dept Mech Engn, Baton Rouge, LA USA
基金
美国国家科学基金会;
关键词
Impact behavior; self-healing; polymeric artificial muscle; MEMORY POLYMER FIBERS; SYNTACTIC FOAM; SANDWICH PANELS; THERMOMECHANICAL CHARACTERIZATION; MASS IMPACT; PREDICTION; BEHAVIOR; CORE; POLYURETHANE; PERFORATION;
D O I
10.1177/0021998316636454
中图分类号
TB33 [复合材料];
学科分类号
摘要
In this study, a fishing line artificial muscle reinforced syntactic foam composite was investigated. About 3.5 vol.% of polymer artificial muscle was woven into a two-dimensional grid skeleton and embedded into a syntactic foam matrix. The grid-stiffened syntactic foam composite was designed to be able to repeatedly heal cracks on-demand. Short thermoplastic fibers were also dispersed into the foam matrix both as reinforcement and as a healing agent. The composite panel was repeatedly impacted, bending fractured, and healed as per the biomimetic close-then-heal strategy. It is found that the composite panel responds to impact quasi-statically. The impact-and bending-induced macroscopic cracks can be repeatedly healed with high healing efficiency, under both free and clamped boundary conditions. Contrary to most healing systems, the healing efficiency within the damage-healing cycles in this study increases as the damagehealing cycle increases. Because the artificial muscle is made of low-cost and high-strength fishing line, it is envisioned that the composite panel developed in this study may be a viable alternative core for healable lightweight composite sandwich structures at competitive cost.
引用
收藏
页码:4235 / 4249
页数:15
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