Approach of Residual Stress Generated by Deep Rolling Application to the Reinforcement of the Fatigue Resistance of Crankshafts

F. Galzy; H. Michaud; Jean Michel Sprauel

doi:10.4028/www.scientific.net/MSF.490-491.384

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HomeMaterials Science ForumMaterials Science Forum Vols. 490-491Approach of Residual Stress Generated by Deep...

Approach of Residual Stress Generated by Deep Rolling Application to the Reinforcement of the Fatigue Resistance of Crankshafts

Abstract:

In the new types of diesel motors, the crankshaft loads increase dramatically. For that reason, to satisfy the requirements and needs of its motorist’s customers, ASCOMETAL has developed a special bending fatigue test applied to “Baldwin” specimens reinforced by deep rolling. Such test is representative of the main in-service loads existing in crankshaft crankpin fillets (one of the weakest point of the component). Thus, using this test, the mechanisms leading to the increase of the fatigue resistance brought by the deep rolling treatment, could be identified. This reinforcement is mainly linked to crack arrest due to both a decrease of the in-depth stress concentration factor and to remaining compressive residual stresses induced by the deep rolling. In this paper, the experimental methods (in particular X-rays diffraction) used to characterize the stress fields generated by the deep rolling treatment are described first. The equations of equilibrium and compatibility of the particular toric symmetry of the crankshaft crankpin fillets have been used then to analyze the surface and in-depth stress profiles of the tested sample. This allowed characterizing the shake down and stress relaxation induced by fatigue. The crack propagation behaviour and the associated fracture limits were also defined.

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Periodical:

Materials Science Forum (Volumes 490-491)

Pages:

384-389

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.490-491.384

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Online since:

July 2005

Authors:

F. Galzy, H. Michaud, Jean Michel Sprauel

Keywords:

Deep Rolling, Fatigue, Steel, X-Ray Diffraction (XRD)

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References

[1] N.V. Nallicheri, J.P. Clark and F.R. Field: Material Alternatives for the Automotive Crankshaft; a Competitive Assessment Based on manufacturing economics (SAE Vol. 910139 1991).

DOI: 10.4271/910139

Google Scholar

[2] A. Benamar, J.F. Flavenot, J. Lu, C. Sardine, G. Chalant and G. Inglebert: CETIM-Information, Vol. 129 (1992).

Google Scholar

[3] M. Francois, B. Dionnet, J.M. Sprauel, F. Nardou: J. of Appl. Cryst., Vol. 32, part 5, (1999), pp.883-891.

Google Scholar

[4] J.M. Sprauel and H. Michaud: J. of Appl. Cryst. Vol. 34 (2001), pp.549-557.

Google Scholar