Effect of weld geometry on mis-match limit load analyses for circumferential surface cracked pipes in the centre of welds

Sang Hyun Kim, Jae Jun Han, Han Sang Lee, Yun Jae Kim

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

Abstract

The weld metal compared to the base metal, is known to be more vulnerable to cracking. Thus, the strength mismatch limit load analysis is necessary for defect assessment. In our previous paper, closed-form solutions of mis-match limit loads were proposed for idealized butt weld configuration as a function of the strength mis-match ratio with geometry-related slenderness parameter. The actual weld geometry is not idealized band configuration but shape of V-grooved welds. The surface crack is more common and significant than through wall crack. The present work provides mis-match limit loads for circumferential surface cracked pipes in the centre of V-groove welds using finite element (FE) analysis. Various crack depth (a/t=0.35∼0.8) and groove angles (20o∼90o) are considered for systematic investigation. With regards to loading conditions, axial tension is applied for all cases.

Original languageEnglish
Title of host publicationMaterials and Fabrication
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791846032
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes
EventASME 2014 Pressure Vessels and Piping Conference, PVP 2014 - Anaheim, United States
Duration: 2014 Jul 202014 Jul 24

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume6A
ISSN (Print)0277-027X

Conference

ConferenceASME 2014 Pressure Vessels and Piping Conference, PVP 2014
CountryUnited States
CityAnaheim
Period14/7/2014/7/24

ASJC Scopus subject areas

  • Mechanical Engineering

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  • Cite this

    Kim, S. H., Han, J. J., Lee, H. S., & Kim, Y. J. (2014). Effect of weld geometry on mis-match limit load analyses for circumferential surface cracked pipes in the centre of welds. In Materials and Fabrication (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 6A). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/PVP2014-28865