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A STUDY OF THE INTERACTION AND COALESCENCE OF TWO COPLANAR FATIGUE CRACKS IN BENDING
Author(s) -
Soboyejo W. O.,
Kishimoto K.,
Smith R. A.,
Knott J. F.
Publication year - 1989
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.1460-2695.1989.tb00524.x
Subject(s) - coalescence (physics) , finite element method , materials science , structural engineering , bending , paris' law , three point flexural test , experimental data , mechanics , crack closure , fracture mechanics , composite material , engineering , mathematics , physics , statistics , astrobiology
— This paper reports the results of an experimental and numerical investigation of the interaction and coalescence of two coplanar semi‐elliptical cracks. Fatigue crack growth data were obtained from a four‐point bend specimen using the direct current potential difference method and a beachmarking technique. A finite element simulation of the experimental conditions was also performed. Crack advance was computed from the Paris equation on a step by step basis. Good agreement between experimental fatigue crack growth data and the finite element predictions is demonstrated.