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A NEW APPROACH TO THE DETERMINATION OF THE CRACK VELOCITY VERSUS CRACK LENGTH RELATION (1994)

Mishnaevsky, L. L.

Oxford, UK : Blackwell Publishing Ltd

Fatigue & fracture of engineering materials & structures 17 (1994), S. 0

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ISSN: 1460-2695

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Notes: Abstract— A mathematical model of crack propagation due to the formation of a fractal cluster of voids and microcracks is presented. The initiation of a microcrack from a pile-up of dislocations in the vicinity of a crack tip is modelled. A method to determine the fractal dimension of a crack, based on the crack growth analysis, is developed. A crack length versus crack velocity relation, based on the physical mechanisms of crack growth and the fractal nature of a crack, is deduced. A formula for the time to fracture is obtained.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1460-2695.1994.tb01409.x

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