Elastic-plastic fracture mechanics assessment of test data for circumferential cracked pipes

Nam Su Huh, Do Jun Shim, Yun-Jae Kim, Young Jin Kim

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

Abstract

This paper presents experimental validation of two reference stress based methods for circumferential cracked pipes. One is the R6 method where the reference stress is defined by the plastic limit load. The other is the enhanced reference stress method, recently proposed by the authors, where the reference stress is defined by the optimized reference load. Using thirty-eight published pipe test data, the predicted maximum instability loads according to both methods are compared with the experimental ones for pipes with circumferential through-thickness cracks and with part circumferential surface cracks. It is found that the R6 method gives conservative estimates of the maximum loads for all cases. Ratios of the experimental maximum load to the predicted load range from 0.54 to 0.98. On the other hand, the proposed method gives overall closer maximum loads than R6, compared to the experimental data. However, for part through-thickness surface cracks, the estimated loads were slightly non-conservative for four cases, and possible reasons were fully discussed.

Original languageEnglish
Title of host publicationAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
EditorsK.K. Yoon, J.B. Choi
Pages71-78
Number of pages8
Volume461
DOIs
Publication statusPublished - 2003
Externally publishedYes
Event2003 ASME Pressure Vessels and Piping Conference - Cleveland, OH, Afghanistan
Duration: 2003 Jul 202003 Jul 24

Other

Other2003 ASME Pressure Vessels and Piping Conference
CountryAfghanistan
CityCleveland, OH
Period03/7/2003/7/24

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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  • Cite this

    Huh, N. S., Shim, D. J., Kim, Y-J., & Kim, Y. J. (2003). Elastic-plastic fracture mechanics assessment of test data for circumferential cracked pipes. In K. K. Yoon, & J. B. Choi (Eds.), American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP (Vol. 461, pp. 71-78) https://doi.org/10.1115/PVP2003-1992