Influence of water on energy absorption of filament winding ring under lateral impact loading
Katayama Tsutao; Shinohara Masahiro; Osafune Tatsuya
Abstract:Fiber reinforced plastics that have good specific strength and rigidity are used in many fields. Recently, they are applied as components of high speed vehicles such as automobile, aircraft and spacecraft. Such vehicles need a large absorbing capacity of energy to secure passengers from impact caused by collisions with stones, hailstones and birds. In the earlier paper on this work, it was found that, when FW rings having some notches along the internal circumference of the ring were subjected to lateral impact loading, interlaminar fracture appeared but the absorbing energy increased under constant impact load. So such a notched FW ring shows ideal characteristics as the shock absorbing component. However, some problems may occur such as that energy absorption characteristics are influenced by the direction of impact loading. In addition, FRP used as a component of transportation vehicles may be exposed to various environments such as water or thermal environments. So, it is also necessary to investigate the energy absorbing ability of FRP exposed to such environments.