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Article Dans Une Revue Fatigue and Fracture of Engineering Materials and Structures Année : 2006

Specimen geometry effect on creep crack growth in 316L(N)

Résumé

The ASTM E1457-98 standard describes the procedure to determine the master curve da/dt versus C* parameter, for creeping solids. However, the methodology is only to be applied to compact tension (CT) specimens. The European collaborative program CRETE aims at extending the application of the ASTM E1457-98 standard to other types of laboratory specimens. In this paper, an existing database of creep crack growth on 316L(N) stainless steel is utilized, concerning three types of specimens: circumferentially cracked round bars (CCRBs) and double edge notched tensile (DENT) specimens for tensile mechanical loading whereas the classical CT specimen combines tensile and bending loading modes. A modified procedure based on the ASTM E1457-98 standard has been applied to the database, resulting in a unique master curve of da/dt versus C*. The geometry effect is then investigated by introducing the Q* parameter by analogy to the Q parameter in the elastic–plastic J-Q approach.

Dates et versions

hal-00136795 , version 1 (15-03-2007)

Identifiants

Citer

Lucien Laiarinandrasana, Moulay Kabiri. Specimen geometry effect on creep crack growth in 316L(N). Fatigue and Fracture of Engineering Materials and Structures, 2006, 29, pp.145-155. ⟨10.1111/j.1460-2695.2006.00973.x⟩. ⟨hal-00136795⟩
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