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Indentation-flexure and low-velocity impact damage in graphite/epoxy laminates
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Sankar, Bhavani V. Kwon, Young S. |
| Copyright Year | 1992 |
| Description | Static indentation and low velocity impact tests were performed on quasi-isotropic and cross ply graphite/epoxy composite laminates. The load deflection relations in static tests and impact force history in the impact tests were recorded. The damage was assessed by using ultrasonic C-scanning and photomicrographic techniques. The static behavior of the laminates and damage progression during loading, unloading, and reloading were explained by a simple plate delamination model. A good correlation existed between the static and impact responses. It was found that results from a few static indentation-flexture tests can be used to predict the response and damage in composite laminates due to a class of low velocity impact events. |
| File Size | 3533013 |
| Page Count | 174 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920013724 |
| Archival Resource Key | ark:/13960/t4qk2bb71 |
| Language | English |
| Publisher Date | 1992-03-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Nondestructive Tests Strain Energy Release Rate Low Speed Photomicrographs Mechanical Properties Impact Tests Laminates Indentation Ultrasonic Flaw Detection Static Tests Delaminating Graphite-epoxy Composites Mathematical Models Impact Damage Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
