A stretched zone method for ctod evaluation

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1991 English Publisher:Springer Science and Business Media LLCJournal:International Journal of Fracture, volume 47, pages R29-R32 (issn: 0376-9429, eissn: 1573-2673,

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Authors: R. K. Pandey; P. Sundaram; A. N. Kumar;

doi: 10.1007/bf00032577

A stretched zone method for ctod evaluation

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Abstract

where Aa=~. h is the length (or width) of the stretched zone. Conventionally, the deformed crack tip is considered to be of a semi-circular type leading to a blunting angle of 45 degrees. However, viewpoints contrary to this have been expressed [3-5]. In the present work, the blunting angle (0) has been evaluated by measurement of the stretched zone width (SZW) and the stretched zone depth (SZD) in the Mo and C"r-Mo steels and a method for CTOD initiation toughness is proposed.

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Indian Institutes of Technology
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