High Cycle Fatigue Damage Model for Delamination Crack Growth in CF/Epoxy Composite Laminates

Stress intensity factors as the fracture parameters for delamination crack growth in composite laminates

A ``mutual integral'' approach is used to calculate the mixed-mode stress intensity factors for a free-edge delamination crack in a laminate under tensile loading conditions. This ``mutual integral'' approach, for generalized plane strain conditions, is based on the application of the path-independent J integral to a linear combination of three solutions: one, the problem of the laminate to be ...

Vibration Monitoring of Composite Laminates with Delamination Damage

Comprehensively simulating the mixed-mode progressive delamination in composite laminates

Gao, Zhenyuan MSAA, Purdue University, May 2015. Comprehensively Simulating the Mixed-Mode Progressive Delamination in Composite Laminates. Major Professor: Wenbin Yu. Delamination, or interlaminar debonding, is a commonly observed failure mechanism in composite laminates. It is of great significance to comprehensively simulate the mixed-mode progressive delamination in composite structures bec...

A new cohesive model for simulating delamination propagation in composite laminates under transverse loads

A new cohesive model for simulating delamination propagation in composite laminates under transverse loads. Running title: A new cohesive model for simulating delamination propagation in composite laminates 2 Abstract In this paper, we propose a new cohesive model to stably and accurately simulate the delamination propagations in composite laminates under quasi-static and low-velocity impact tr...

A cohesive model of fatigue crack growth

We investigate the use of cohesive theories of fracture, in conjunction with the explicit resolution of the near-tip plastic fields and the enforcement of closure as a contact constraint, for the purpose of fatiguelife prediction. An important characteristic of the cohesive laws considered here is that they exhibit unloadingreloading hysteresis. This feature has the important consequence of pre...