학술논문
Non-destructive examination and component reliability: what should we be looking for
Document Type
Conference
Author
Source
Conference: 3. international conference on nondestructive evaluation in the nuclear industry, Salt Lake City, UT, USA, 11 Feb 1980
Subject
Language
English
Abstract
Causes of crack initiation and propagation leading to leaking or to component failure have been examined for various pressure boundary components in nuclear systems. These failures have been reviewed as to their safety significance. Such failures were predominantly due to intergranular stress corrosion, thermal fatigue and erosion fatigue in the component population examined. Based on the success or lack of success in detecting cracks due to these predominant mechanisms suggestions are made concerning use of more information in the UT frequency spectrum. Alternately, the amplitude approach should be optimized to improve the probability of detection of flaws such as IGSCC.