Paper number 372

IMPACT PROPERTIES OF GLASS FIBER COMPOSITES WITH RESPECT TO SURFACE TREATMENT AND FIBER VOLUME FRACTION

S. S. Cheon¹ and D. G. Lee²

1Automotive component div. Daesung Group, 155-2, Kwanhoon-dong, Chongro-gu, Seoul, 110-300, Korea
2Mechanical Design Laboratory with Advanced Materials, ME3221, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology
373-1, Gusong-dong, Yusong-gu, Taejon, 305-701, Korea

Summary

The impact energy absorption characteristics of glass epoxy composites and glass polyester composites with respect to fiber volume fraction were investigated by the instrumented Charpy impact test method. Also, the glass polyester composites both with and without silane treatment were tested. The interlaminar shear properties were measured by the short beam shear test to investigate the correlation between the interlaminar shear properties and the impact energy absorption characteristics. Additionally, the glass epoxy hybrid composites embedded with glass fibers without silane treatment were tested. From the tests, the optimum fiber volume fraction for impact energy absorption was obtained and the progressive impact fracture model was proposed to predict the impact absorption characteristics of composites.

Keywords

impact energy absorption, interlaminar properties, silane coupling treatment, progressive impact fracture model.