Nonlinear ultrasonic evaluation of the fatigue damage of adhesive joints

被引：79

作者：

Shui, Guoshuang ^{[1
]}

Wang, Yue-sheng ^{[1
]}

Huang, Peng ^{[1
]}

Qu, Jianmin ^{[2
]}

机构：

[1] Beijing Jiaotong Univ, Dept Mech, Beijing 100044, Peoples R China

[2] Northwestern Univ, Dept Civil & Environm Engn, Evanston, IL 60208 USA

来源：

NDT & E INTERNATIONAL | 2015年 / 70卷

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

Nonlinear ultrasonics; Fatigue damage; Adhesive joints; Non-destructive evaluation; OF-THE-ART; GUIDED-WAVES; PROPAGATION; BONDS; DEGRADATION;

D O I：

10.1016/j.ndteint.2014.11.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An experimental method based on the nonlinear ultrasonic technique is presented to evaluate fatigue damage of an adhesive joint. In this paper, specimens made from AZ31 magnesium-aluminum alloy bonded through an epoxy layer are subjected to a fatigue load. The ultrasonic harmonics generated due to damage within the adhesive layer are measured; and the acoustic nonlinearity parameter (ANP) based on the fundamental and second harmonics is determined. The results show that the normalized ANP increases with the fatigue cycles. Furthermore, a theoretical model with different interfacial compression and tension stiffness is proposed to interpret the generation of second harmonics. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：9 / 15

页数：7

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