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A STUDY OF RETARDING FATIGUE CRACK GROWTH USING AN ARTIFICIAL WEDGE
Author(s) -
Yanyan Wang,
Mingxu Zho,
Daqing Feng
Publication year - 1993
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.1460-2695.1993.tb00093.x
Subject(s) - wedge (geometry) , paris' law , materials science , crack closure , structural engineering , composite material , fatigue testing , fracture mechanics , engineering , geometry , mathematics
Based on the analysis of an artificial wedge, a model for an equivalent crack opening load for three point bend specimens is presented. It has been verified by experiments that the crack growth force calculated from the above model, and the relationship between the calculated ΔKeff and da/dN are almost the same as those of cracked specimens without a wedge. Therefore this model can be applied to estimate retardation or crack arrest behaviour.