Rev. Met. Paris
Volume 90, Number 5, Mai 1993
|Page(s)||697 - 708|
|Published online||23 January 2017|
Crack closure measurements and analysis of fatigue crack propagation under variable amplitude loading
Mesures de fermeture de fissure et analyse de la propagation de fissure sous chargement d’amplitude variable
This paper presents the results of an experimental programme conducted on a 316L stainless steel to analyze the behaviour of surface and embedded metallurgical defects in components. Crack closure measurements have been performed under plane stress and plane strain conditions, under constant amplitude loading and after overloads. The crack opening load was measured by four different methods including surface, center and bulk measurements. Fatigue crack growth rates were determined, at different R ratios, under constant amplitude and under random loading conditions, using a stationary Gaussian sequence (I = 99 %). The paper presents the experimental results and numerical analysis of the crack closure phenomenon.
© La Revue de Métallurgie 1993
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