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A Residual Stress Intensity Factor Solution for Knoop Indentation Cracks

  • Letters in Fracture and Micromechanics
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Abstract

The residual stress intensity factors at the surface and at the deepest point of the semi-elliptical Knoop indentation crack is determined from the stresses in the damaged zone below the indenter. For this purpose, the weight function approach by Cruse and Besuner was used and wide-range expressions of the geometric function are given. The solution is then applied to a commercial silicon nitride for which all relevant geometrical data are available.

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Author notes

  1. Stefan Fünfschilling

    Present address: , sia Abrasives, Mühlewiesenstrasse 20, CH-8501, Frauenfeld, Switzerland

Authors and Affiliations

  1. Institut für Struktur- und Funktionskeramik, Montanuniversitaet Leoben, Franz-Josef-Straße 18, A-8700, Leoben, Austria

    Tanja Lube

  2. Institut für Angewandte Materialien - Keramik im Maschinenbau, Universität Karlsruhe, Haid- und- Neu-Straße 7, D-76131, Karlsruhe, Germany

    Theo Fett, Stefan Fünfschilling, Michael J. Hoffmann & Rainer Oberacker

Authors
  1. Tanja Lube
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  2. Theo Fett
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  3. Stefan Fünfschilling
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  4. Michael J. Hoffmann
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  5. Rainer Oberacker
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Correspondence to Tanja Lube.

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Lube, T., Fett, T., Fünfschilling, S. et al. A Residual Stress Intensity Factor Solution for Knoop Indentation Cracks. Int J Fract 175, 65–71 (2012). https://doi.org/10.1007/s10704-012-9696-0

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  • DOI: https://doi.org/10.1007/s10704-012-9696-0

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