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

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

研究成果: Article査読

11 被引用数 (Scopus)

抄録

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 optimised reference load. Using 38 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 are fully discussed.

本文言語English
ページ(範囲)173-191
ページ数19
ジャーナルEngineering Fracture Mechanics
71
2
DOI
出版ステータスPublished - 2004 1
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

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