Book
Mode I Cohesive Law Characterization of Through-Crack Propagation in a Multidirectional Laminate
08 Sep 2014
Abstract
A method is proposed and assessed for the experimental characterization of through-the-thickness crack propagation in multidirectional composite laminates with a cohesive law. The fracture toughness and crack opening displacement are measured and used to determine a cohesive law. Two methods of computing fracture toughness are assessed and compared. While previously proposed cohesive characterizations based on the R-curve exhibit size effects, the proposed approach results in a cohesive law that is a material property. The compact tension specimen configuration is used to propagate damage while load and full-field displacements are recorded. These measurements are used to compute the fracture toughness and crack opening displacement from which the cohesive law is characterized. The experimental results show that a steady-state fracture toughness is not reached. However, the proposed method extrapolates to steady-state and is demonstrated capable of predicting the structural behavior of geometrically-scaled specimens.
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Details
- Title
- Mode I Cohesive Law Characterization of Through-Crack Propagation in a Multidirectional Laminate
- Creators
- Frank A LeoneTein-Min TanAndrew C BerganJonathan AwerbuchCarlos G Davila
- Number of pages
- 1 electronic document.
- Resource Type
- Book
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Identifiers
- 991019173581304721