An Experimental Investigation Of Constraint Effects On Mixed Mode Fracture Initiation In A Ductile Aluminium Alloy

Roy, Arun Y and Narasimhan, R and Arora, PR (1999) An Experimental Investigation Of Constraint Effects On Mixed Mode Fracture Initiation In A Ductile Aluminium Alloy. In: Acta Materialia, 47 (5). pp. 1587-1596.

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Abstract

The effect of constraint on ductile fracture initiation from a notch tip under mode I and mixed mode (involving modes I and II) loading is investigated. To this end, mixed mode fracture experiments are performed with Compact Tension Shear (or CTS) specimen of a ductile 2014-O aluminium alloy. The constraint effects are investigated by considering specimens with two crack length to width ratios. The effect of crack tip constraint on the relationship between the critical value of the J-integral at fracture initiation (J(c)) and M-p is examined. Further, the micromechanics of mixed mode ductile fracture initiation is investigated by performing fractographic studies and metallographic examination of the mid-plane region of the specimen near the notch tip.

Item Type:	Journal Article
Publication:	Acta Materialia
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	19 Jul 2009 05:28
Last Modified:	19 Sep 2010 04:59
URI:	http://eprints.iisc.ac.in/id/eprint/17923

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