TREATMENT OF FRACTURE TOUGHNESS DATA IN THE TRANSITION REGIME

1460-2695

Blackwell Publishing Journal Backfiles 1879-2005

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Abstract— Two methods are given in this paper for describing the dependence of fracture toughness on temperature in the transition regime. The first method estimates fracture toughness at, or close to, the onset of stable tearing prior to cleavage fracture. The second method uses a statistical model to describe both initiation and cleavage fracture toughness in terms of stable tearing and specimen thickness.The procedures are illustrated using unirradiated fracture toughness data from the US Heavy Section Steel Irradiation Program 5th Series.

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