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Crack closure forces in ceramics: Characterization and formation

Rödel, Jürgen (1992):
Crack closure forces in ceramics: Characterization and formation.
In: Journal of the European Ceramic Society, pp. 323-334, 9, (4), ISSN 09552219,
[Online-Edition: http://dx.doi.org/10.1016/0955-2219(92)90067-N],
[Article]

Abstract

In-situ crack propagation studies using the scanning electron microscope (SEM) on seven materials are used to define three general categories for crack bridging elements: intact (elastic) bridges, frictionally sliding (plastic) bridges and mechanically interlocked (elastic-plastic) bridges. A number of examples are provided, some including sequences detailing bridge formation and bridge evolution. Failure modes of all these restraining elements, their interrelations and synergistic effects are discussed.

A simple fracture mechanics model attempts to provide the criteria for bridge formation. The relevant microstructural parameters are grain size and shape, intra- or intercrystalline fracture energy, residual stress and Young's modulus.

Item Type: Article
Erschienen: 1992
Creators: Rödel, Jürgen
Title: Crack closure forces in ceramics: Characterization and formation
Language: English
Abstract:

In-situ crack propagation studies using the scanning electron microscope (SEM) on seven materials are used to define three general categories for crack bridging elements: intact (elastic) bridges, frictionally sliding (plastic) bridges and mechanically interlocked (elastic-plastic) bridges. A number of examples are provided, some including sequences detailing bridge formation and bridge evolution. Failure modes of all these restraining elements, their interrelations and synergistic effects are discussed.

A simple fracture mechanics model attempts to provide the criteria for bridge formation. The relevant microstructural parameters are grain size and shape, intra- or intercrystalline fracture energy, residual stress and Young's modulus.

Journal or Publication Title: Journal of the European Ceramic Society
Volume: 9
Number: 4
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 13 Jun 2012 13:51
Official URL: http://dx.doi.org/10.1016/0955-2219(92)90067-N
Identification Number: doi:10.1016/0955-2219(92)90067-N
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