Stress corrosion cracking detection using non-contact ultrasonic techniques

被引：51

作者：

Hernandez-Valle, F. ^{[1
]}

Gough, A. R. ^{[1
]}

Edwards, R. S. ^{[1
]}

机构：

[1] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

来源：

CORROSION SCIENCE | 2014年 / 78卷

基金：

欧洲研究理事会;

关键词：

Stainless steel; Stress corrosion; RAYLEIGH-WAVES; X-RAY; INSPECTION; DEFECTS; FATIGUE;

D O I：

10.1016/j.corsci.2013.10.018

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work a method is presented for detecting and locating stress corrosion cracking (SCC) in stainless steel pipe samples. The method combines laser generation and either laser or electromagnetic acoustic transducer (EMAT) detection, scanning the generation point across the sample surface. Using laser-generated ultrasonic waves that interact with the cracks, and performing time-frequency analysis techniques to examine changes in the generated wavemodes, surface plots that clearly resolve the spatial extent and geometric alignment of the cracks are created and presented here. The method is demonstrated using components removed from service after exhibiting SCC. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：335 / 342

页数：8

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