ELASTIC BRIDGING FOR MODELING FATIGUE-CRACK PROPAGATION IN A FIBER-REINFORCED TITANIUM MATRIX COMPOSITE

Authors
NGUYEN THB YANG JM
Citation
Thb. Nguyen et Jm. Yang, ELASTIC BRIDGING FOR MODELING FATIGUE-CRACK PROPAGATION IN A FIBER-REINFORCED TITANIUM MATRIX COMPOSITE, Fatigue & fracture of engineering materials & structures, 17(2), 1994, pp. 119-131
Citations number
20
Categorie Soggetti
Material Science","Engineering, Mechanical
Journal title
Fatigue & fracture of engineering materials & structures → ACNP
ISSN journal
8756758X
Volume
17
Issue
2
Year of publication
1994
Pages
119 - 131
Database
ISI
SICI code
8756-758X(1994)17:2<119:EBFMFP>2.0.ZU;2-8
Abstract
A model based upon linear elastic bridging and fiber crack tip shieldi ng is proposed for predicting fatigue crack growth in a SCS-6/Ti-6-4 c omposite. The model is characterized by the fiber/matrix debond length rather than the fiber/matrix interfacial frictional shear strength us ed in most current fatigue models. Finite elements combined with fract ure mechanics are applied for computing the local stress intensity. Th e local stress intensity in the matrix is then utilized to predict cra ck growth in the composite via comparison to monolithic fatigue crack propagation data for a similar Ti-6-4 matrix material.