Effect of hot humid environmental exposure on fatigue crack growth of adhesive-bonded aluminum A356 joints

• Published in: International journal of adhesion and adhesives Vol. 40; pp. 1 - 10
• Main Authors: Wang, Mingxing, Liu, Ailong, Liu, Zhongxia, Wang, Pei-Chung
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.01.2013; Elsevier
• Subjects: Adhesive-bonded aluminum A356 joint; Applied sciences; Exact sciences and technology; Fatigue crack growth (FCG); Hot humid environmental exposure; Physicochemistry of polymers; Polymer industry, paints, wood; Single-edge notch bend (SENB) specimen; Technology of polymers; Fatigue crack growth (FCG); Hot humid environmental exposure; Adhesive-bonded aluminum A356 joint; Single-edge notch bend (SENB) specimen; Polymer; Adhesive; Fatigue crack
• ISSN: 0143-7496; 1879-0127
• DOI: 10.1016/j.ijadhadh.2012.08.008

In this study, the effect of hot humid environmental exposure prior to and after adhesive curing on the fatigue crack growth (FCG) behavior of adhesive-bonded aluminum A356 joints was investigated by using single-edge notch bend (SENB) specimen. The results showed that while the exposure after adhesive curing had a significant effect on the FCG resistance of the joints, the exposure of the assembled joints prior to adhesive curing had a relatively small influence. In addition, the effect of load ratio R on the FCG behavior of the exposed joints was studied. The results showed that the FCG of the exposed joints is more sensitive to load ratio R than that of the unexposed joints.