Structural integrity assessment is indispensable for preventing catastrophic failure of industrial structures/components/facilities that are faced with time-dependent and environmentally-accelerated degradation. This diagnosis of operating components should be done periodically for safe maintenance and economical repair. However, conventional standard methods for mechanical properties have the problems of bulky specimen, destructive and complex procedure of specimen sampling. So, an advanced indentation technique has been developed as a potential method for non-destructive testing of in-field structures. This technique measures indentation load-depth curve during indentation and analyzes the mechanical properties related to deformation such as yield strength, tensile strength and work-hardening index. Also the advanced indentation technique can evaluate residual stresses based on the concept that indentation load-depth curves were shifted with the direction and the magnitude of residual stress applied to materials. In this study, we characterized the tensile properties and welding residual stress of various Industrial pipeline steels through the new techniques, and the results are introduced and discussed.
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2002 4th International Pipeline Conference
September 29–October 3, 2002
Calgary, Alberta, Canada
Conference Sponsors:
- Pipeline Division
ISBN:
0-7918-3620-7
PROCEEDINGS PAPER
Advanced Indentation Techniques: NDE for Flow Properties and Residual Stresses of Pipelines
Yeol Choi,
Yeol Choi
Seoul National University, Seoul, Korea
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Dongil Son,
Dongil Son
Seoul National University, Seoul, Korea
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Jae-Il Jang,
Jae-Il Jang
Seoul National University, Seoul, Korea
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Joon Park,
Joon Park
Seoul National University, Seoul, Korea
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Woo-Sik Kim,
Woo-Sik Kim
Korea Gas Corporation, Ansan, Korea
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Dongil Kwon
Dongil Kwon
Seoul National University, Seoul, Korea
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Yeol Choi
Seoul National University, Seoul, Korea
Dongil Son
Seoul National University, Seoul, Korea
Jae-Il Jang
Seoul National University, Seoul, Korea
Joon Park
Seoul National University, Seoul, Korea
Woo-Sik Kim
Korea Gas Corporation, Ansan, Korea
Dongil Kwon
Seoul National University, Seoul, Korea
Paper No:
IPC2002-27404, pp. 2045-2052; 8 pages
Published Online:
February 24, 2009
Citation
Choi, Y, Son, D, Jang, J, Park, J, Kim, W, & Kwon, D. "Advanced Indentation Techniques: NDE for Flow Properties and Residual Stresses of Pipelines." Proceedings of the 2002 4th International Pipeline Conference. 4th International Pipeline Conference, Parts A and B. Calgary, Alberta, Canada. September 29–October 3, 2002. pp. 2045-2052. ASME. https://doi.org/10.1115/IPC2002-27404
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