유리직물/에폭시 복합재료 보의 내부구조와 충격굽힘진동특성

Microstructure and Impactive Flexural Vibration Characteristics of Glass-Fabric/Epoxy Composite Beams

The vibration behavior of glass-fabric reinforced plastic(GFRP) composite beams subjected to various transverse impacts has been investigated as a function of fiber orientation and void fraction. Theoretical results of resonant frequency damping coefficient and modal amplitude dispersion using the Euler-beam theory were obtained along with the finite element analysis which were compared with experimental ones Consequently it was shown that the transverse vibration characteristics were largely affected by fiber orientation and void fraction.