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Abstract:
This report presents the results of a program with the objective to experimentally investigate the effects of moisture and temperature on the fatigue and fracture response of composite laminates under compression loads. The structural laminates investigated were a typical angle ply laminate and a typical turbine-engine fan blade laminate. Defects investigated were: full- and half-penetration slits and impact delaminations. Results are presented showing the effects of moisture on the fracture and fatigue strength at room temperature 394K (250 deg F) and 422K (300 deg F). Static test results are presented that show the effects of defect size and type on the compression-fracture strength under moisture and thermal environments. The cyclic test results compare the fatigue lives and residual-compression strength under compression only and under tension-compression fatigue loading.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE DOCUMENT PARTIALLY ILLEGIBLE |
| Description: |
Final rept. 1 Jun 81-31 Aug 82 |
| Pages: |
124 |
| Report Date: |
31 AUG 82 |
| Contract Number: |
NAS3-22812 |
| Report Number: |
A040013 |
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