材料期刊网

The impact toughness of normal bamboo, reformed bamboo and reformed bamboo reinforced composites was studied comparatively by using a computerized Automatic Impact Testing System. It is found that the impact toughness of normal bamboo is dependent on the direction of the impact load. If the impact load is applied in the radial direction of the bamboo culm, the specimen impacted on the pith-ring has a much higher impact toughness than those impacted on the rind side. The impact toughness of reformed bamboo is somewhat lower than that of normal bamboo when most static mechanical properties are increased. The experimental results reveal that one of the technical parameters of reformed bamboo, the compressive ratio, is closely related to its impact toughness. However, the composition of reformed bamboo with glass fabric and aluminum sheets can improve the impact properties of reformed bamboo composites to a satisfactory extent while maintaining the superiority of their static mechanical properties.