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THE INFLUENCE OF MICROSTRUCTURE ON THE GROWTH OF SMALL FATIGUE CRACKS
Author(s) -
Lankford J.
Publication year - 1985
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1985.tb01201.x
Subject(s) - materials science , microstructure , paris' law , composite material , fatigue testing , work (physics) , crack closure , fracture mechanics , engineering , mechanical engineering
— Recent experimental work on the growth of small fatigue cracks is surveyed and critically analyzed. It is shown that microcracks grow at anomalous rapid rates relative to large ones only when certain criteria, involving crack size, plastic zone size, and micro‐structural element size, are met. Retardation and arrest of microcracks is found to correlate with microstructural element size, hence with crystallographic influence.