Charpy Impact Property of Unidirectional Fiber Reinforced Plastic Composite

Fiber-reinforced plastic (FRP) composite formed by filament-winding (FW) technique shows a distinct advantage in its high strength. However, the mechanical property data for FW composite, particularly under impact loading are not sufficient for structure design. In this report, Charpy impact property of unidirectional FRP formed by FW technique was investigated. Charpy impact tests were carried out on several types of GFRP and CFRP specimens having widely-spread levels of strength, and the correlation between Charpy impact value and strength was investigated. The experimental results showed that the charpy impact values linearly inceased with increasing tensile strength. The case of unidirectional GFRP especially showed high impact values.