Mechanical properties and failure mechanisms of carbon fiber reinforced epoxy laminated composites
- Materials Research and Processing Science, MS: G755, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
- Materials Research and Processing Science, MS: G755, Fluid Dynamics, MS: B216, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
The mechanical behavior of quasi-isotropic and unidirectional epoxy-matrix carbon-fiber laminated composites subjected to compressive loading at strain rates of 10{sup {minus}3} and 2000s{sup {minus}1} are described. Failure in the studied composites was dominated by delamination which proceeded by brittle fracture of the epoxy-matrix. The matrix-fiber bonding in these composites is very strong and prevented the occurrence of significant fiber-pullout. The mode I delamination strain energy release rate of the unidirectional composites was determined using the double cantilever beam and hole in plate compression method. The DCB method indicated a significant R curve effect attributed to fiber bridging while the presently available hole in plate analytical methods show questionable validity for highly anisotropic materials. {copyright} {ital 1996 American Institute of Physics.}
- OSTI ID:
- 561710
- Report Number(s):
- CONF-950846-; ISSN 0094-243X; TRN: 9716M0040
- Journal Information:
- AIP Conference Proceedings, Vol. 370, Issue 1; Conference: American Physical Society biennial conference on shock compression of condensed matter, Seattle, WA (United States), 13-18 Aug 1995; Other Information: PBD: May 1996
- Country of Publication:
- United States
- Language:
- English
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