Author： Pavier Martyn Smith David
Publisher： Engineering Integrity Society
ISSN： 1365-4101
Source： Engineering Integrity, Vol.20, Iss.1, 2006-09, pp. : 16-20
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Abstract
A cold expansion process is often used to improve the fatigue life of aerospace components containing fastener holes. This paper describes an attempt to predict the growth rate of a fatigue crack emanating from a cold expanded hole. The prediction is made using a three-dimensional finite element model of a cold expanded hole combined with a Paris law fit to fatigue data. Residual stresses in the finite element model are calculated from a simulation of the cold expansion process. Adequate agreement is found when the finite element predictions are compared with experimental measurements.
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