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Interaction between crack deflection and crack bridging

Rödel, Jürgen (1992):
Interaction between crack deflection and crack bridging.
In: Journal of the European Ceramic Society, pp. 143-150, 10, (3), ISSN 09552219, [Online-Edition: http://dx.doi.org/10.1016/0955-2219(92)90027-B],
[Article]

Abstract

The potential of crack deflection and crack bridging as competing toughening mechanisms is reviewed. Available measurement techniques take a crucial role where it is required to distinguish between toughening increments associated with crack tip processes and crack wake processes near the crack tip. Particular emphasis is placed on measurements of the crack opening displacement. It is concluded that crack deflection has only small potential as a toughening mechanism compared to crack bridging, but is required to activate crack closure stresses associated with bridging ligaments. This simple realization defines a window of microstructural parameters in which crack deflection is active and where crack bridging parameters can be optimized.

Item Type: Article
Erschienen: 1992
Creators: Rödel, Jürgen
Title: Interaction between crack deflection and crack bridging
Language: English
Abstract:

The potential of crack deflection and crack bridging as competing toughening mechanisms is reviewed. Available measurement techniques take a crucial role where it is required to distinguish between toughening increments associated with crack tip processes and crack wake processes near the crack tip. Particular emphasis is placed on measurements of the crack opening displacement. It is concluded that crack deflection has only small potential as a toughening mechanism compared to crack bridging, but is required to activate crack closure stresses associated with bridging ligaments. This simple realization defines a window of microstructural parameters in which crack deflection is active and where crack bridging parameters can be optimized.

Journal or Publication Title: Journal of the European Ceramic Society
Volume: 10
Number: 3
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: 15 Jun 2012 08:24
Official URL: http://dx.doi.org/10.1016/0955-2219(92)90027-B
Identification Number: doi:10.1016/0955-2219(92)90027-B
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