Compressive strength of carbon/epoxy laminated under multiaxial stress
Technical Report
·
OSTI ID:5244556
- Utah Univ., Salt Lake City, UT (USA). Mechanics of Composites Lab.
This is a final annual report to the Lawrence Livermore National Laboratory on a project to determine the strength of carbon/epoxy laminates under conditions of multiaxial compressive stress. It was found that the compressive strength of the critical plies in a laminate depends on the total layup of the laminate, and thus compressive strength is an apparent or in-situ'' property. Variations in apparent strength by a factor of 2 were found over the range of laminates investigated. Biaxial compression loadings showed lower than expected failure by buckling under external pressure. The multiaxial compression apparatus was redesigned to eliminate specimen end brooming under conditions of high axial load. 12 refs., 14 figs., 2 tabs.
- Research Organization:
- Lawrence Livermore National Lab., CA (USA); Utah Univ., Salt Lake City, UT (USA). Mechanics of Composites Lab.
- Sponsoring Organization:
- DOD
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5244556
- Report Number(s):
- UCRL-21235; ON: DE90005552
- Country of Publication:
- United States
- Language:
- English
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