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MODELING THE INFLUENCE OF INITIAL MATERIAL INHOMOGENEITIES ON THE FATIGUE LIFE OF NOTCHED COMPONENTS
Author(s) -
Grandt A. F.,
Scheumann T. D.,
Todd R. E.,
Hinkle A. J.
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.tb00753.x
Subject(s) - materials science , composite material , fracture (geology) , aluminium , structural engineering , fracture mechanics , fatigue testing , engineering
This paper summarizes a fracture mechanics analysis developed to study the effect of initial size and spatial distribution of inherent material inhomogeneities on fatigue life. Calculations were performed for a set of experiments conducted previously to determine the influence of microporosity size and frequency on the fatigue life of notched 7050‐T7451 aluminum specimens. The favorable comparison between the numerical and experimental results indicates the analysis method could be used to predict the benefits to fatigue life obtained by reducing the size and distribution of initial inhomogeneities such as those due to microporosity.