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Experimental and analytical estimates of fatigue crack closure in an aluminium-copper alloy .2. A finite element analysis

Ashbaugh, NE and Dattaguru, B and Khobaib, M and Nicholas, T and Prakash, RV and Ramamurthy, TS and Seshadri, BR and Sunder, R (1997) Experimental and analytical estimates of fatigue crack closure in an aluminium-copper alloy .2. A finite element analysis. In: Fatigue and Fracture of Engineering Materials and Structures, 20 (7). pp. 963-974.

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Official URL: http://www3.interscience.wiley.com/journal/1201463...

Abstract

A numerical investigation of the fatigue crack closure phenomenon has been performed by an elastic-plastic finite element analysis. Computer software was developed to consider many aspects affecting plasticity-induced crack closure. Linear and power-law hardening models are considered in the finite element analysis. The paper presents results from the study carried out on compact tension (CT) coupons at various crack lengths corresponding to different loading conditions. Finally the results of the analysis are compared with the experimental estimates of fatigue crack closure levels obtained from laser interferometry, scanning-electron and transmission-electron fractography presented in Part I of this paper on identical specimens.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Blackwell Publishing.
Keywords: Fatigue crack growth;crack closure;elastic-plastic finite element analysis;linear and power-law strain hardening;load-v-COD data.
Department/Centre: Others
Date Deposited: 19 Jul 2009 05:09
Last Modified: 19 Jul 2009 05:09
URI: http://eprints.iisc.ernet.in/id/eprint/18961

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