Cumulative Damage Model for Advanced Composite Materials.
Abstract
This report represents the details of a methodology in which cumulative damage in composite laminates is mathematically modeled. The basic concept adopted in the theoretical development is to regard the accumulation of damage in laminates as a load and/or time dependent process. The process begins with the initiation of sublaminate cracks at locations where dominating material flaws exist; under sustaining load, then, thus, the requirement of the model is to be able to describe the process and thereby relate the laminate strength stiffness, and service life properties as a function of loading history. In this research program, the cumulative damage model is developed from five stages of effort: Numerical, experimental, theorization, simulation, and prediction/correlation. Keywords: Composite materials; Graphite-epoxy laminates: Matrix cracks; Edge delamination; Fracture mechanics; Strain energy rate; Random flaw distribution; Stochastic processes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 15, 1985
- Accession Number
- ADA164392
Entities
People
- A. S. D. Wang
- Charles S. Lei
- Pei Chi Chou
- Ronald B. Bucinell