BANVILLET, Alexis; PALIN LUC, Thierry; VITTORI, Jean-François

doi:10.1520/JAI19040.

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BANVILLET, Alexis
Laboratoire Matériaux Endommagement Fiabilité et Ingénierie des Procédés [LAMEFIP]

PALIN LUC, Thierry

VITTORI, Jean-François
Technocentre Renault [Guyancourt]

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Journal of ASTM International (JAI). 2004, vol. 1, n° 8, p. 1-13

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This paper deals with the effect on life of the desynchronism between two variable amplitude load sequences in combined bending and torsion. Experiments were carried out on smooth specimens made of the EN-GJS800-2 cast iron. The comparison between experimental lives and predicted ones with the following fatigue life calculation methods is presented: Smith-Watson-Topper, Fatemi and Socie (method proposed by Bannantine), Wang and Brown, Socie's proposal for high cycle fatigue, and Morel. If the scatter of experiments is considered, these experiments show a low effect of the correlation factor on life. All the simulated fatigue life calculation methods give good results for proportional loads, but their predictions are not good for non-proportional loads. Morel’s proposal seems to be the best to predict life of the tested material with our non-proportional fatigue test conditions.< Réduire

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variable amplitude

multiaxial fatigue

correlation factor

life prediction

non-proportional loading

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Fatigue Life of a SG Cast Iron under Real Loading Spectra: Effect of the Correlation Factor Between Bending and Torsion

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