Estimation of V factor under combined thermal and mechanical stress for circumferential cracked pipes

Tae Kwang Song, Yun Jae Kim, Chang Kyun Oh, Kamran Nikbin, Robert A. Ainsworth

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

Abstract

This paper provides V-factor estimation under combined mechanical and thermal load for circumferential cracked pipes. In this study, the effects of types and magnitudes of the thermal stress, mechanical loading mode, crack geometry, and plastic strain hardening on variations of V-factor are estimated. The results of finite element analyses are compared with R6 values. As a result, it is shown that R6 gives generally conservative results. The conservatism is especially increased for the combination of large mechanical and thermal load. As a result, new estimation equation which uses failure assessment curve in R6 is proposed for V-factor and gives less conservative results.

Original languageEnglish
Title of host publicationProceedings of the ASME Pressure Vessels and Piping Conference 2009 - Materials and Fabrication
Pages117-119
Number of pages3
EditionPART A
DOIs
Publication statusPublished - 2010 Jun 7
Externally publishedYes
Event2009 ASME Pressure Vessels and Piping Conference - Prague, Czech Republic
Duration: 2009 Jul 262009 Jul 30

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
NumberPART A
Volume6
ISSN (Print)0277-027X

Conference

Conference2009 ASME Pressure Vessels and Piping Conference
CountryCzech Republic
CityPrague
Period09/7/2609/7/30

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ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Song, T. K., Kim, Y. J., Oh, C. K., Nikbin, K., & Ainsworth, R. A. (2010). Estimation of V factor under combined thermal and mechanical stress for circumferential cracked pipes. In Proceedings of the ASME Pressure Vessels and Piping Conference 2009 - Materials and Fabrication (PART A ed., pp. 117-119). (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 6, No. PART A). https://doi.org/10.1115/PVP2009-77355