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

doi:10.1115/PVP2009-77355

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 proceeding › Conference 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 language	English
Title of host publication	Proceedings of the ASME Pressure Vessels and Piping Conference 2009 - Materials and Fabrication
Pages	117-119
Number of pages	3
Edition	PART A
DOIs	https://doi.org/10.1115/PVP2009-77355
Publication status	Published - 2010 Jun 7
Externally published	Yes
Event	2009 ASME Pressure Vessels and Piping Conference - Prague, Czech Republic Duration: 2009 Jul 26 → 2009 Jul 30

Publication series

Name	American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Number	PART A
Volume	6
ISSN (Print)	0277-027X

Conference

Conference	2009 ASME Pressure Vessels and Piping Conference
Country/Territory	Czech Republic
City	Prague
Period	09/7/26 → 09/7/30

ASJC Scopus subject areas

Mechanical Engineering

Access to Document

10.1115/PVP2009-77355

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

Estimation of V factor under combined thermal and mechanical stress for circumferential cracked pipes. / Song, Tae Kwang; Kim, Yun Jae; Oh, Chang Kyun et al.
Proceedings of the ASME Pressure Vessels and Piping Conference 2009 - Materials and Fabrication. PART A. ed. 2010. p. 117-119 (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 6, No. PART A).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Song, TK, Kim, YJ, Oh, CK, Nikbin, K & Ainsworth, RA 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 edn, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, no. PART A, vol. 6, pp. 117-119, 2009 ASME Pressure Vessels and Piping Conference, Prague, Czech Republic, 09/7/26. https://doi.org/10.1115/PVP2009-77355

Song TK, Kim YJ, Oh CK, Nikbin K, Ainsworth RA. 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. 2010. p. 117-119. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; PART A). doi: 10.1115/PVP2009-77355

Song, Tae Kwang ; Kim, Yun Jae ; Oh, Chang Kyun et al. / Estimation of V factor under combined thermal and mechanical stress for circumferential cracked pipes. Proceedings of the ASME Pressure Vessels and Piping Conference 2009 - Materials and Fabrication. PART A. ed. 2010. pp. 117-119 (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; PART A).

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title = "Estimation of V factor under combined thermal and mechanical stress for circumferential cracked pipes",

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.",

author = "Song, {Tae Kwang} and Kim, {Yun Jae} and Oh, {Chang Kyun} and Kamran Nikbin and Ainsworth, {Robert A.}",

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AU - Ainsworth, Robert A.

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N2 - 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.

AB - 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.

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

Abstract

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