SOME OBSERVATIONS ON CREEP CRACK INITIATION FROM NOTCHES

Autor:	E. G. Ellison, M. Kobayashi
Rok vydání:	1992
Předmět:	Materials science Creep Mechanics of Materials business.industry Mechanical Engineering Crack initiation General Materials Science Structural engineering Composite material business Constant (mathematics)
Zdroj:	Fatigue & Fracture of Engineering Materials and Structures. 15:585-594
ISSN:	1460-2695 8756-758X
DOI:	10.1111/j.1460-2695.1992.tb01297.x
Popis:	Tests have been carried out on a 1 Cr-Mo-V steel at 565°C to describe creep crack initiation in two notched geometries. From metallographic observation the initiation times were observed to be approx. 8 and 13 % of rupture lives for the sharp slit and blunter notch shapes, respectively. Based on only a few tests a relationship between the initiation time t i ; and the creep crack parameter J* was found to be of the form t i (J*) 0.67 = constant
Databáze:	OpenAIRE
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