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ELASTIC BRIDGING FOR MODELING FATIGUE CRACK PROPAGATION IN A FIBER‐REINFORCED TITANIUM MATRIX COMPOSITE
Author(s) -
Nguyen T.H. B.,
Yang J.M.
Publication year - 1994
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.1460-2695.1994.tb00795.x
Subject(s) - materials science , bridging (networking) , composite material , stress intensity factor , fracture mechanics , composite number , crack closure , stress concentration , paris' law , matrix (chemical analysis) , structural engineering , linear elasticity , finite element method , engineering , computer science , computer network
Abstract— A model based upon linear elastic bridging and fiber crack tip shielding is proposed for predicting fatigue crack growth in a SCS‐6/Ti‐6–4 composite. The model is characterized by the fiber/matrix debond length rather than the fiber/matrix interfacial frictional shear strength used in most current fatigue models. Finite elements combined with fracture mechanics are applied for computing the local stress intensity. The local stress intensity in the matrix is then utilized to predict crack growth in the composite via comparison to monolithic fatigue crack propagation data for a similar Ti‐6–4 matrix material.