Evaluation of stress corrosion cracks in metals by linear and nonlinear ultrasound

Yohei Shintaku, Yoshikazu Ohara, Makoto Hashimoto, Satoshi Horinouchi, Kazushi Yamanaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Nondestructive crack depth measurement is necessary for the evaluation of material strength in aged nuclear power plants. If a stress corrosion crack (SCC) is closed because of residual stress or by oxide film, the crack could be underestimated or overlooked. Thus far, to simulate SCCs generated in nuclear power plants, various formation methods were used. However, the difference in closure behavior between the formation methods has yet to be examined. Here we formed two kinds of SCCs in the specimens with a starting notch and a deep fatigue crack, respectively. Then we imaged them using linear phased array (PA) and subharmonic phased array for crack evaluation (SPACE). By comparing these results and the optically-observed cross section, we discussed the formation-method depenedence of crack closure behavior.

Original languageEnglish
Title of host publication20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society
Pages113-116
Number of pages4
Publication statusPublished - 2010 Dec 1
Event20th International Congress on Acoustics 2010, ICA 2010 - Incorporating the 2010 Annual Conference of the Australian Acoustical Society - Sydney, NSW, Australia
Duration: 2010 Aug 232010 Aug 27

Publication series

Name20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society
Volume1

Other

Other20th International Congress on Acoustics 2010, ICA 2010 - Incorporating the 2010 Annual Conference of the Australian Acoustical Society
CountryAustralia
CitySydney, NSW
Period10/8/2310/8/27

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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