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Cohesive Strength and Separation Energy as Characteristic Parameters of Fracture Toughness and Their Relation to Micromechanics

W. Brocks1

1 GKSS Research Centre, Geesthacht, Germany

Structural Durability & Health Monitoring 2005, 1(4), 233-244. https://doi.org/10.3970/sdhm.2005.001.233

Abstract

A review on phenomenological fracture criteria is given, based on the energy balance for cracked bodies, and the respective toughness parameters are related to micromechanical processes. Griffith's idea of introducing a "surface energy" and Barenblatt's concept of a "process zone" ahead of the crack tip build the foundation of modern cohesive models, which have become versatile tools for numerical simulations of crack extension. The cohesive strength and the separation energy used as phenomenological material parameters in these models appear to represent a physically significant characterisation of "fracture toughness". Micromechanical interpretations of these parameters can be derived, depending on the specific damage phenomenon.

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APA Style
Brocks, W. (2005). Cohesive strength and separation energy as characteristic parameters of fracture toughness and their relation to micromechanics. Structural Durability & Health Monitoring, 1(4), 233-244. https://doi.org/10.3970/sdhm.2005.001.233
Vancouver Style
Brocks W. Cohesive strength and separation energy as characteristic parameters of fracture toughness and their relation to micromechanics. Structural Durability Health Monit . 2005;1(4):233-244 https://doi.org/10.3970/sdhm.2005.001.233
IEEE Style
W. Brocks, “Cohesive Strength and Separation Energy as Characteristic Parameters of Fracture Toughness and Their Relation to Micromechanics,” Structural Durability Health Monit. , vol. 1, no. 4, pp. 233-244, 2005. https://doi.org/10.3970/sdhm.2005.001.233



cc Copyright © 2005 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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