Accession Number : AD0740070

Title :   An Evaluation of Fracture Toughness with Double Cracked COD Specimens,

Corporate Author : DEFENCE STANDARDS LABS MARIBYRNONG (AUSTRALIA)

Personal Author(s) : Hughes,P. C.

Report Date : SEP 1971

Pagination or Media Count : 4

Abstract : The technique of crack opening displacement using double cracked specimens has been employed to evaluate the fracture toughness of a high strength structural steel at quasi-static and dynamic loading rates. The results are compared with those obtained from conventional single-edge-notch COD and Charpy V notch specimens. It is shown that, at the higher loading rate, the transition temperature of the steel is raised by over 90K. Examples are given of the ways in which such fracture toughness data may be used to predict minimum service temperatures or maximum permitted defect sizes. (Author)

Descriptors :   (*STEEL, *FRACTURE(MECHANICS)), TEST METHODS, AUSTRALIA

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE