Some Applications of Fractal Fracture Mechanics to Describe the Fatigue Behaviour of Materials

Abstract:

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As is well-known, fatigue limit, threshold stress intensity range and fatigue crack growth rate are influenced by the specimen or structure size. Limited information on size effect is available in the literature. In the present paper, by employing some concepts of fractal geometry, new definitions of fatigue limit, fracture energy and stress intensity factor, based on physical dimensions different from the classical ones, are discussed. Then, size-dependent laws for fatigue limit, threshold stress intensity range and fatigue crack growth rate are proposed. Some experimental results are examined in order to show how to apply such theoretical scaling laws.

Info:

Periodical:

Key Engineering Materials (Volumes 378-379)

Edited by:

Dr. T. S. Srivatsan, FASM, FASME

Pages:

355-370

DOI:

10.4028/www.scientific.net/KEM.378-379.355

Citation:

A. Carpinteri et al., "Some Applications of Fractal Fracture Mechanics to Describe the Fatigue Behaviour of Materials", Key Engineering Materials, Vols. 378-379, pp. 355-370, 2008

Online since:

March 2008

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Price:

$35.00

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