Study on improvement of a simplified estimation method for surface crack growth behavior under creep-fatigue condition

Akira Nishikawa, Isamu Nonaka

Research output: Contribution to conferencePaperpeer-review

Abstract

This paper describes a simplified estimation method for surface crack growth behavior under creep-fatigue conditions. The method considered in this study was based on R6 rule developed by CEGB in UK and was applied to fatigue and creep-fatigue crack growth assessment. The authors considered stress relaxation behavior during the hold time in the ΔJ c evaluation using elastic follow-up coefficients. Various tests were carried out and were compared with the predictions by the proposed method. In consequence, it was confirmed that the crack growth-rate under creep-fatigue conditions can be estimated within a factor of two for axial loading and ten for bending loading.

Original languageEnglish
Pages19-31
Number of pages13
Publication statusPublished - 1996 Dec 1
EventProceedings of the 1996 8th International Conference on Pressure Vessel Technology, ICPVT-8. Part 2 (of 2) - Montreal, Can
Duration: 1996 Jul 211996 Jul 26

Other

OtherProceedings of the 1996 8th International Conference on Pressure Vessel Technology, ICPVT-8. Part 2 (of 2)
CityMontreal, Can
Period96/7/2196/7/26

ASJC Scopus subject areas

  • Engineering(all)

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