文献类型：期刊文献

英文题名：Mechanical Properties and Interlaminar Fracture Toughness of Glass-Fiber-Reinforced Epoxy Composites Embedded with Shape Memory Alloy Wires

作者：Xu, Li-Dan[1];Shi, Ming-Fang[1];Sun, Xiao-Yu[1];Wang, Zhen-Qing[1];Yang, Bin[2]

机构：[1]Harbin Engn Univ Harbin, Coll Aerosp & Civil Engn, Harbin 150001, Heilongjiang, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：20

期号：3

外文期刊名：ADVANCED ENGINEERING MATERIALS

收录：;EI(收录号：20174604398302);WOS:【SCI-EXPANDED(收录号:WOS:000427415200010)】；

基金：This work is supported financially by the National Natural Science Foundation of China (No. 11602066, 11472086 and 11532013) and the China Postdoctoral Science Foundation On the 56th bath of surface founds the project (2014M561327) and the National Science Foundation of Heilongjiang Province of China (QC2015058, 42400621-1-15047 and G023016003), the Foundation Research Funds for the Central Universities (HEUCF130214 and GK2020260141), the special fund for research on science and technology innovation talent in Harbin (G023316004).

语种：英文

外文关键词：Composite laminates; Failure mechanism; Fracture toughness; Mechanical properties; Shape memory alloy

摘要：The effects of the content and position of shape memory alloy (SMA) wires on the mechanical properties and interlaminar fracture toughness of glass-fiber-reinforced epoxy (GF/epoxy) composite laminates are investigated. For this purpose, varying numbers of SMA wires are embedded in GF/epoxy composite laminates in different stacking sequences. The specimens are prepared by vacuum-assisted resin infusion (VARI) processing and are subjected to static tensile and three-point-bending tests. The results show that specimens with two SMA wires in the stacking sequence of [GF(2)/SMA/GF(1)/SMA/GF(2)] and four SMA wires in the stacking sequence of [GF(4)/SMA/GF(2)/SMA/GF(4)] exhibit optimal performance. The flexural strength of the optimal four-SMA-wire composite is lower than that of the pure GF/epoxy composite by 5.76% on average, and the flexural modulus is improved by 5.19%. Mode-I and II interlaminar fracture toughness tests using the SMA/GF/epoxy composite laminates in the stacking sequence of [GF(4)/SMA/GF(2)/SMA/GF(4)] are conducted to evaluate the mechanism responsible for decreasing the mechanical properties. Scanning electron microscopy (SEM) observations reveal that the main damage modes are matrix delamination, interfacial debonding, and fiber pullout.