Are the Paris’ law parameters dependent on each other?

Carpinteri, Alberto and Paggi, Marco Are the Paris’ law parameters dependent on each other? Frattura ed Integrità Strutturale, 2. pp. 10-16. ISSN 1971-8993 (2007)

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Abstract

The question about the existence of a correlation between the parameters C and m of the Paris’ law is re-examined in this paper. According to dimensional analysis and incomplete self-similarity concepts applied to the linear range of fatigue crack growth, a power-law asymptotic representation relating the parameter C to m and to the governing variables of the fatigue phenomenon is derived. Then, from the observation that the Griffith-Irwin instability must coincide with the Paris’ instability at the onset of rapid crack growth, the exponents entering this correlation are determined. A fair good agreement is found between the proposed correlation and the experimental data concerning Aluminium, Titanium and steel alloys.

Item Type:	Article
Identification Number:	https://doi.org/10.3221/IGF-ESIS.02.02
Uncontrolled Keywords:	Fatigue crack growth, Paris’ law parameters, Correlation, Dimensional analysis, Griffith-Irwin instability.
Subjects:	T Technology > TJ Mechanical engineering and machinery
Research Area:	Computer Science and Applications
Depositing User:	Prof Marco Paggi
Date Deposited:	25 Nov 2013 13:17
Last Modified:	09 Oct 2014 09:20
URI:	http://eprints.imtlucca.it/id/eprint/1949

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