点击次数：

论文类型：期刊论文

发表时间：2013-03-01

发表刊物：INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES

收录刊物：SCIE、EI

卷号：41

页面范围：6-15

ISSN号：0143-7496

关键字：Adhesively bonded joints; Structural adhesive; Cohesive zone model; Response surface method; Single lap joints

摘要：Structural adhesives are being widely adopted in aerospace and automobile industries. However, in many cases, hostile environments cause non-ignorable degradation in joints mechanical performance. In this work, a combined experimental-numerical approach was developed to characterise the effect of cyclic-temperature environment on adhesively bonded joints. The environmental degradation factor, Deg, was introduced into a cohesive zone model to evaluate the degradation process in the adhesive layer caused by the cyclic-temperature environment and the stress states in adhesive layer before and after temperature exposure treatment were investigated. Carefully designed experimental tests were carried out to validate the simulation results and help the numerical procedure to predict joint mechanical behaviour after environmental exposure. A response surface method was utilised to provide a better visualisation on the relationship between selected factors and response. Finally, the scanning electron microscopy was carried out to investigate the micro fracture mechanisms of adhesively bonded joints. (C) 2012 Elsevier Ltd. All rights reserved.