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The fractal effect of irregularity of crack branching on the fracture toughness of brittle materials

โœ Scribed by Xie Heping

Publisher
Springer Netherlands
Year
1989
Tongue
English
Weight
655 KB
Volume
41
Category
Article
ISSN
1573-2673

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โœฆ Synopsis

Microstructural observations of brittle materials indicated that a variety of microdefect events can be responsible not only for inelastic behaviour, but also for macroscopic crack front irregularity. This irregularity produces an increase in the fracture toughness of the material. In this paper, this irregularity is analysed by fractal geometry in a very simple manner; a fractal model of crack branching is established. Both microscopic and macroscopic analytical results show that the toughness can be raised appreciably as a fractal geometric effect of the irregularity.

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