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Investigation of low velocity impact damage on filamentary composite materials
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Bower, Mark V. |
| Copyright Year | 1987 |
| Description | Presented are the results of an investigation of the effect of low velocity impact on the residual modulus and residual strength of flat filamentary composite materials. Theoretical analysis of composite materials indicates that the modulus of the material must decrease as impact damage increases. This decrease must also correlate to the decrease in residual strength. This study attempts to verify these hypotheses. Graphite/epoxy laminates (AS4/3501-6) of various fiber orientations (8 (0 deg), 2 (+ or - 45 deg)sub 8) were impacted using a falling weight impact tester. Impact energies ranged from 0.42 to 1.55 ft-lb, with impact velocities from 2.03 to 3.98 ft/sec. The results show that there is a reduction in residual modulus of the plate as the impact energy increases. |
| File Size | 604281 |
| Page Count | 24 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19880006225 |
| Archival Resource Key | ark:/13960/t0vq7tq0s |
| Language | English |
| Publisher Date | 1987-11-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Flat Plates Drop Tests Low Speed Graphite-epoxy Composites Modulus of Elasticity Fiber Orientation Impact Tests Laminates Impact Damage Residual Strength Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
