Cohesive Formulations for Delamination in Polymer Layered Composites
Abstract
A basic formulation for the delamination response of composites has been developed and validated against experimental data. An energy balance is formulated that relates the applied force to interfacial strength under conditions of steady delamination. This observation is validated through numerical simulations and it allows to classify interfaces into hard versus soft categories and may serve as a powerful design tool. A simple formulation that incorporates the effect of rate dependence provides theoretical limits at very low and at very high crack velocities. These limits are also verified experimentally. Finally, a formulation has been developed to predict the post shatter mechanical response of composite plates.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 15, 2000
- Accession Number
- ADA378866
Entities
People
- A. Jagota
- S. J. Bennison
- S. Muralidhar
- S. Saigal
Organizations
- Carnegie Mellon University