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Erschienen in:
1992 | OriginalPaper | Buchkapitel
Metal Fatigue — A New Perspective
verfasst von : K. J. Miller
Erschienen in: Topics in Fracture and Fatigue
Verlag: Springer New York
Enthalten in: Professional Book Archive
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It is well understood that the fatigue limit behavior of a metal is a function of defect size within the Linear Elastic Fracture Mechanics (LEFM) regime. Conversely, it is not well understood how microstructural defects affect the fatigue limits of heterogeneous materials of apparently smooth specimens and engineering components. Consequently in the latter case investigations have concentrated on the cyclic stress-strain, or deformation, approach to fatigue fracture e.g. the Basquin and Coffin-Manson type studies.By introducing micro-structural fracture mechanics and elastic-plastic fracture mechanics it is possible to link the deformation and the fracture approaches to metal fatigue investigations. This chapter considers these developments and their implications.