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A review of the numerical estimation of crack closure and fatigue crack growth

Dattaguru, B (2000) A review of the numerical estimation of crack closure and fatigue crack growth. In: Creep, Fatigue and Creep-Fatigue Interaction, 20-22 Jan. 1999, Kalpakkam, India, pp. 155-164.

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Abstract

Presents a review of the numerical methods for estimation of fatigue crack growth based on plasticity-induced fatigue crack closure under cyclic loading. Load interaction effects and temperature exposure on closure levels are highlighted. With the advent of large and fast computing power, it is possible to adopt numerical methods such as elastic-plastic finite element analysis to study these effects under the general class of problems dealing with variable amplitude loading. The results of numerical analysis were validated by comparison with fractographic data obtained from a series of specially designed experiments. The load interaction effects on crack closure levels are numerically simulated and compared with the earlier experimental results reported in literature. The effects of temperature exposure are explained using a model involving creep effects

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to Indian Institute of Metals
Keywords: crack edge stress field analysis;creep;elastoplasticity;fatigue cracks;finite element analysis;reviews
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 30 Jul 2007
Last Modified: 27 Aug 2008 12:43
URI: http://eprints.iisc.ernet.in/id/eprint/10343

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