The Effect of Bending Deflection on the Strength Degradation of Homogenous and Hybrid Composites Reinforced with Brittle and Ductile Fibers

Authors

amirkabir university of technology

Abstract

In this research, homogenous and intra-ply hybrid composite of brittle/ductile fibers (basalt as brittle fiber and nylon as ductile fiber) have been produced in order to investigate the effects of bending deflection on damages caused to the composite structure. The composite samples used in this investigation were of different volume percentage of basalt fiber (0, 50, 66, 75 and 100). All samples including six layers were prepared using hand lay-up method. Three-point bending test with different deflection (10 mm, 20 mm, 30 mm)were performed on the prepare samples. In the following, residual tensile strength was employed in order to study the amount of bending damages caused to the specimens. The results indicate that on samples comprised of high content of basalt fiber, by increasing the deflection, the damage caused to the composite structure increases. With increasing the ductile (nylon) fiber content, increasing the bending deflection has not significant effect on caused damages.

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References

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Journal of Solid and Fluid Mechanics
Volume 6, Issue 1
March and April 2016
Pages 11-18

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