Stress intensity factor of nozzle corner cracks

In this paper, a formula for the stress intensity factor (SIF) of a nozzle corner 1 4 circular crack in a P.V. Nozzle along the longitudinal section of the cylinder is proposed and verified with the fatigue experimental results of 30 nozzle corner cracks from nine pieces of plate-nozzle models and t...

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Veröffentlicht in:Engineering fracture mechanics 1990, Vol.36 (5), p.813-818
Hauptverfasser: Hong, Qichao, Chai, Guozhong
Format: Artikel
Sprache:eng
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Zusammenfassung:In this paper, a formula for the stress intensity factor (SIF) of a nozzle corner 1 4 circular crack in a P.V. Nozzle along the longitudinal section of the cylinder is proposed and verified with the fatigue experimental results of 30 nozzle corner cracks from nine pieces of plate-nozzle models and three pressure vessels. The maximum difference between the K I value calculated with the proposed formula and the experimental results is less than 15%.
ISSN:0013-7944
1873-7315
DOI:10.1016/0013-7944(90)90409-A