Ductile failure analyses for API X65 pipes based on local failure criteria

Chang Kyun Oh, Yun-Jae Kim, Jong Hyun Baek, Young Pyo Kim, Woo Sik Kim

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

5 Citations (Scopus)

Abstract

A local failure criterion for the API X65 steel is applied to predict ductile failure of full-scale API X65 pipes with simulated corrosion and gouge defects under internal pressure. The local failure criterion is the stress-modified fracture strain for the API X65 steel as a function of the stress triaxiality (defined by the ratio of the hydrostatic stress to the effective stress). Based on detailed FE analyses with the proposed local failure criteria, burst pressures of defective pipes are estimated and compared with experimental data. The Failure of corroded pipes is governed by local necking and plastic collapse in the defective region, rather than failure. For pipes with gouge defects, on the other hand, it is found that fracture is dominant. The predicted burst pressures are in good agreement with experimental data. Noting that an assessment equation against the gouge defect is not yet available, parametric study is performed, from which a simple equation is proposed to predict burst pressure for API X65 pipes with gouge defects.

Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume2006
DOIs
Publication statusPublished - 2006 Nov 29
EventASME PVP2006/ICPVT-11 Conference - Vancouver, BC, Canada
Duration: 2006 Jul 232006 Jul 27

Other

OtherASME PVP2006/ICPVT-11 Conference
CountryCanada
CityVancouver, BC
Period06/7/2306/7/27

Fingerprint

Application programming interfaces (API)
Pipe
Defects
Steel
Corrosion
Plastics

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Cite this

Oh, C. K., Kim, Y-J., Baek, J. H., Kim, Y. P., & Kim, W. S. (2006). Ductile failure analyses for API X65 pipes based on local failure criteria. In American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP (Vol. 2006) https://doi.org/10.1115/PVP2006-ICPVT-11-93769

Ductile failure analyses for API X65 pipes based on local failure criteria. / Oh, Chang Kyun; Kim, Yun-Jae; Baek, Jong Hyun; Kim, Young Pyo; Kim, Woo Sik.

American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. Vol. 2006 2006.

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

Oh, CK, Kim, Y-J, Baek, JH, Kim, YP & Kim, WS 2006, Ductile failure analyses for API X65 pipes based on local failure criteria. in American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. vol. 2006, ASME PVP2006/ICPVT-11 Conference, Vancouver, BC, Canada, 06/7/23. https://doi.org/10.1115/PVP2006-ICPVT-11-93769
Oh CK, Kim Y-J, Baek JH, Kim YP, Kim WS. Ductile failure analyses for API X65 pipes based on local failure criteria. In American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. Vol. 2006. 2006 https://doi.org/10.1115/PVP2006-ICPVT-11-93769
Oh, Chang Kyun ; Kim, Yun-Jae ; Baek, Jong Hyun ; Kim, Young Pyo ; Kim, Woo Sik. / Ductile failure analyses for API X65 pipes based on local failure criteria. American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. Vol. 2006 2006.
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