Investigation of Failure Mechanisms in Fiber Composite Laminates.
Abstract
An analytical investigation is made into the behavior of fiber composite laminates after initial lamina failure has occurred in top (outside) layer. The analysis investigates the relative importance of delamination of the failed layer and of stress concentrations in the adjacent lamina to the ultimate failure mechanisms of laminates. A general interlaminar stress analysis is developed which takes into account interface nonlinear behavior and delamination effects. The analysis is specialized to a laminate whose top layer contains a long crack. Laminated plate theory is used in conjunction with the interlaminar stress analysis to analyze first and subsequent failure of graphite/epoxy (0/90), (plus or minus 45), and (0/plus or minus 45) laminates under several stress states.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1975
- Accession Number
- ADA021242
Entities
People
- B. Walter Rosen
- Philip V. Mclaughlin Jr.
- Shiao N. Huang