Effect of Hygrothermal Cycle Aging on the Mechanical Behavior of Single-lap Adhesive Bonded Joints

被引：11
|
作者：
Fan, Yisa [1 ]
Na, Jingxin [2 ]
Mu, Wenlong [2 ]
Qin, Guofeng [2 ]
Tan, Wei [2 ]
机构：
[1] North China Univ Water Resources & Elect Power, Sch Mech Engn, Zhengzhou 450000, Henan, Peoples R China
[2] Jilin Univ, State Key Lab Automot Simulat & Control, Changchun 130022, Jilin, Peoples R China
来源：
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2019年 / 34卷 / 02期
基金：
中国国家自然科学基金;
关键词：
single lap joints; hygrothermal aging; mechanical behavior; FTIR; TG; DTG; EDS; TEMPERATURE; STRENGTH; COMPOSITE; SHEAR; PERFORMANCE; PREDICTION; IMPACT;
D O I：
10.1007/s11595-019-2057-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The aging behavior of single lap joints (SLJ) in hygrothermal cycles was investigated and compared by using a shearing strength test, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TG/DTG), energy dispersive spectrometry (EDS) and scanning electronic microscopy (SEM). The temperature/relative humidity was set at 80 ?/95% and-40 ?/30% for 20 cycles, 40 cycles, and 60 cycles (one cycle was 12 hours), respectively. The experimental results show that hygrothermal aging significantly decreases the failure strength of adhesive joints. However, the failure displacement increases as the number of aging cycles increases. In addition, hygrothermal aging changes the failure mode of the adhesive joints from a cohesive fracture in un-aged adhesive layers to an interfacial failure of aged adhesive joints.
引用
收藏
页码：337 / 344
页数：8
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