Influence of interfacial debonding and free edges upon compressive strength of unidirectional FRP composite
- Clemson Univ., SC (United States). Dept. of Bioengineering
The uniaxial compressive behavior of fiber reinforced polymer (FRP) composites is discussed in this paper. In the present study, the analytical model developed by the authors in previous studies is applied to investigate the effect of free edges and interfacial debonding upon the compressive strength of unidirectional composites. Results show that interfacial debonding has a great effect on the compressive strength. It is also found that free edges significantly affect the microbuckling behavior of unidirectional FRP composites by lowering the compressive strength of fibers located along a free edge as compared to that of inner fibers. Furthermore, the model indicates that the compressive strength of surface fibers can be strengthened by increasing the thickness of outer matrix coating to the extent to being up to twice as strong as the inner fibers. This finding has very significant implications for the strengthening of composite structures under compression.
- OSTI ID:
- 89857
- Report Number(s):
- CONF-9409291--; ISBN 1-56676-220-0
- Country of Publication:
- United States
- Language:
- English
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