Abstract: Single lap joints were made of titanium alloy and aramid fiber composites. Using DIC, strain acquisition system and OM, the joints strain and failure modes under tensile load were characterized, and the strain fields and failure morphology of joints at different time were analyzed. The failure modes of dissimilar materials bonded joints were studied. The results show that the shear and peeling stress at the top of composites is concentrated, and the joint is firstly failure from here. After starting failure, a high tensile strain region appears on the surface of composites, and a high bending strain region appears on the surface of titanium alloy, and the two regions move along the debonding direction. The tensile and bending stress of adherend at the edge of remaining bonding region is further increased, which causes the joints have a further failure. The joints appear in sequence with the failure of composites delamination and the interfacial failure between the titanium alloy and adhesive.
邹田春, 秦嘉徐, 李龙辉, 符记, 刘志浩, 牟浩蕾. 钛合金-芳纶纤维复合材料单搭接接头渐进失效分析[J]. 材料导报, 2020, 34(20): 20143-20146.
ZOU Tianchun, QIN Jiaxu, LI Longhui, FU Ji, LIU Zhihao, MOU Haolei. Progressive Failure Analysis of Titanium Alloy-Aramid Fiber Composites Single Lap Joints. Materials Reports, 2020, 34(20): 20143-20146.
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2020, Vol. 34 
