期刊
NDT & E INTERNATIONAL
卷 69, 期 -, 页码 1-8出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ndteint.2014.09.001
关键词
Nonlinear ultrasonic; Bispectrum; Collinear wave mixing; Intergranular corrosion; Non-destructive evaluation
资金
- National Natural Science Foundation of China [51075012, 11272017]
- Beijing Natural Science Foundation [1122005]
- National Twelfth Five-Year Plan for Science Technology [201110032, 2011BAK06B03-03, 201210080, 201310156]
Failures due to intergranular corrosion in components of austenitic stainless steel have always been a tough problem in engineering practice. In this paper, the collinear wave mixing was investigated to evaluate the intergranular corrosion in austenitic stainless steel. An acoustic nonlinearity parameter related to the bispectrum, the propagation distance and the amplitudes of fundamental waves in measured signal is proposed. Nonlinear acoustic measurements were conducted on four tubes with different degree of intergranular corrosion. The experimental results demonstrated that the proposed acoustic nonlinearity parameter is sensitive to intergranular corrosion in samples, and is well correlated with the degree of damage. (C) 2014 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据