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Machining induced residual stress in structural aluminum parts

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Abstract

Machining operations of aluminum structural parts are typically carried out under high feeds and high cutting speeds. Under these conditions, high thermomechanical loads are exerted on the workpiece, which may result in changes in the subsurface material. Residual stresses can be one of the machining induced changes and can lead to considerable rejection rates caused by part distortion. Due to their significant economic importance, it is essential to understand the influence of the machining process on the residual stresses in aluminum. This paper presents the influence of the machining parameters as well as the cutting edge geometry on residual stress of workpieces made out of a forged aluminum alloy.

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Acknowledgments

The COMPACT project is a collaboration between Airbus UK (Project Co-ordinator), Alcan–Pechiney, Limerick University, University of Bristol, Enabling Process Technologies, Hannover University, EADS Germany, University of Patras, Alenia Aeronautica, Ultra RS, Institut National Polytechnique de Grenoble and the University of Sheffield. The project is jointly funded by the European Union Framework 6 initiative and the project partners.

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Authors and Affiliations

  1. Institute of Production Engineering and Machine Tools, Leibniz Universität Hannover, An der Universität 2, 30823, Garbsen, Germany

    B. Denkena, D. Boehnke & L. de León

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  1. B. Denkena
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  2. D. Boehnke
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  3. L. de León
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Correspondence to L. de León.

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Denkena, B., Boehnke, D. & de León, L. Machining induced residual stress in structural aluminum parts. Prod. Eng. Res. Devel. 2, 247–253 (2008). https://doi.org/10.1007/s11740-008-0097-1

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  • DOI: https://doi.org/10.1007/s11740-008-0097-1

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