Analysis of short crack growth test data

Seetharam, SA and Dash, PK (1990) Analysis of short crack growth test data. In: 40th Annual General Meeting of Aeronautical Society of India, 19-20 Dec 1988, Madras, India.

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Abstract

An emperical relation is developed to correlate crack length versus number of cycles data generated in a fatigue crack growth test. This expression gives a good fit to the a-N data and provides a monotonically increasing crack growth rate with crack length. Crack growth rates at vanishingly short crack lengths obtained by extrapolation leads to a consistent prediction of stress dependent short crack behavior. This relation is compared with other existing techniques for a-N data processing.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Crack propagation;Fatigue (materials);Fatigue tests;S-N diagrams;Short cracks;Aluminium alloys;Data correlation; Polynomials
Subjects: AERONAUTICS > Aeronautics (General)
Division/Department: Structures Division, Structures Division
Depositing User: M/S ICAST NAL
Date Deposited: 10 Oct 2006
Last Modified: 24 May 2010 09:51
URI: http://nal-ir.nal.res.in/id/eprint/2908

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