ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 7

Determination of the Energy Necessary for Creating Fatigue Cracks by Measurement of Microhardness

Benguediab, M
Professor and assistant professor, Université Djillali Liabes, Faculté des Sciences de l'Ingénieur, Sidi Bel Abbes,

Mazari, M
Professor and assistant professor, Université Djillali Liabes, Faculté des Sciences de l'Ingénieur, Sidi Bel Abbes,

Ranganathan, N
Professor, Ecole des Ingénieurs de Tours, Laboratoire de Mécanique et Rhéologie, Tours,

(Received 13 June 2000; accepted 26 April 2001)

Abstract

The growth of cracks is related to the existence of a plastic zone at the crack tip, the formation and growth of which are accompanied by an energy dissipation. The estimation of this energy is generally made by global measures. In our study, we have used microhardness measurements at the crack tip for estimating energy. The results obtained are more accurate near the crack tip than those estimated by other methods.

Keywords:
energy dissipation, crack tip, local method, global method, plastic zone, local energy, global energy, dissipated energy, microhardness

Paper ID: JTE12279J
DOI: 10.1520/JTE12279J
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