Loading...
Please wait, while we are loading the content...
Similar Documents
Analysis of local delaminations and their influence on composite laminate behavior
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Obrien, T. K. |
| Copyright Year | 1984 |
| Description | An equation was derived for the strain energy release rate, G, associated with local delamination growth from a matrix ply crack. The critical GC for edge delamination onset in 25/902s graphite epoxy laminates was measured and used in this equation to predict local delamination onset strains in 25/90ns, n = 4, 6, 8 laminates. A simple technique for predicting strain concentrations in the primary load bearing plies near local delaminations was developed. These strain concentrations were responsible for reduced laminate nominal failure strains in laminates containing local delaminations. The influence of edge delamination and matrix crack tip delamination on laminate stiffness and strength was compared. |
| File Size | 755501 |
| Page Count | 34 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19840007131 |
| Archival Resource Key | ark:/13960/t8hf2p709 |
| Language | English |
| Publisher Date | 1984-01-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Crack Tips Strain Energy Release Rate Strain Energy Methods Delaminating Graphite-epoxy Composites Stiffness Laminates Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
