Remaining Lives of Fatigue Crack Growths for Pipes With Subsurface Flaws and Subsurface-to-Surface Flaw Proximity Rules

Genshichiro Katsumata; Yinsheng Li; Kunio Hasegawa; Valery Lacroix

doi:10.1115/1.4032816

journal article Apr 29, 2016

Remaining Lives of Fatigue Crack Growths for Pipes With Subsurface Flaws and Subsurface-to-Surface Flaw Proximity Rules

Genshichiro Katsumata Yinsheng Li

Kunio Hasegawa Valery Lacroix

Journal of Pressure Vessel Technology Vol. 138 No. 5 · ASME International

View at Publisher Save 10.1115/1.4032816

Abstract

If a subsurface flaw is located near a component surface, the subsurface flaw is transformed into a surface flaw in accordance with a subsurface-to-surface flaw proximity rule. The recharacterization process from subsurface to surface flaw is adopted in all fitness-for-service (FFS) codes. However, the specific criteria of the recharacterizations are different among the FFS codes. Recently, the authors have proposed a new subsurface-to-surface flaw proximity rule based on experimental data and equivalent fatigue crack growth rate calculations. In this study, fatigue crack growth calculations were carried out for pipes with subsurface flaws, using the proximity rule provided in the current ASME (American Society of Mechanical Engineers) Section XI and JSME (The Japan Society of Mechanical Engineers) codes and the proposed subsurface-to-surface flaw proximity rule. Different pipe sizes, flaw aspect ratios, and ligament distances from subsurface flaws to inner surface of pipes were taken into account. The results indicate the current proximity rule gives less conservative fatigue lives, when the aspect ratios of the subsurface flaws are small.

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References

10

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[5]

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[6]

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[7]

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Metrics

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Citations

10

References

Details

Published: Apr 29, 2016
Vol/Issue: 138(5)

Authors

G

Genshichiro Katsumata

Japan Atomic Energy Agency (JAEA), Shirakata, Tokai-mura, Ibaraki-ken 319-1195, Japan e-mail:

Y

Yinsheng Li

Japan Atomic Energy Agency (JAEA), Shirakata, Tokai-mura, Ibaraki-ken 319-1195, Japan e-mail:

K

Kunio Hasegawa

Center of Advanced Innovation Technologies -VSB-Technical University of Ostrava, 17. listopadu15, Ostrava-Poruba 708 00, Czech Republic e-mail:

V

Valery Lacroix

Tractebel Engineering, Avenue Ariane 7, Brussels 1200, Belgium e-mail:

Cite This Article

Genshichiro Katsumata, Yinsheng Li, Kunio Hasegawa, et al. (2016). Remaining Lives of Fatigue Crack Growths for Pipes With Subsurface Flaws and Subsurface-to-Surface Flaw Proximity Rules. Journal of Pressure Vessel Technology, 138(5). https://doi.org/10.1115/1.4032816

Remaining Lives of Fatigue Crack Growths for Pipes With Subsurface Flaws and Subsurface-to-Surface Flaw Proximity Rules

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