Computation of the Stress Intensity Factor and COD for Submicron Sized Indentation Cracks(Properties (structural and functional),<Special Issue>Guest Editors Dedicated to Prof. Gunter Petzow: Modern Trends in Advanced Ceramics)

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概要

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• The first part of the paper deals with the computation of stress intensity factors for pyramidal indentation cracks with a ratio of crack length c to indentation half-diagonal a between 1 and 2. The residual stress field due to quasi-plastic deformation below the indenter is described by using the Hill model of an expanding sphere. It is found that the proportionality factor in the relation for K_<Ic> decreases with c/a→1 and confirms experimental results with nanoindents on sapphire and fused quartz. In the second part, the crack opening displacement of such cracks is determined.

• 社団法人日本セラミックス協会の論文
• 2006-11-01

著者

• Schneider Gerold

  Institut Fur Keramische Hochleistungswerkstoffe Technische Universitat Hamburg-harburg

• Fett Theo

  Institut Fur Materialforschung Ii:institut Fur Keramik Im Maschinenbau Universitat Karlsruhe

• Schineider Gerold

  Institut fur keramische Hochleistungswerkstoffe, Technische Universitat Hamburg-Harburg

関連論文

• Computation of the Stress Intensity Factor and COD for Submicron Sized Indentation Cracks(Properties (structural and functional),Guest Editors Dedicated to Prof. Gunter Petzow: Modern Trends in Advanced Ceramics)

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