Influence of Bamboo Joint on Dynamic Viscoelasticity of Culm

Experiments were conducted on influence of bamboo joint on dynamic viscoelasticity of specimen from different part of culm using dynamic mechanical analysis.The result demonstrated that bamboo storage modulus decreased with increase of temperature,loss modulus had positive relation with temperature before glass transition,and loss factor had similar change tendency as loss modulus.Storage modulus of specimen at the upper part was larger than that at the lower part at room temperature,and the loss modulus was the same.Storage modulus of speciment with joint was slightly higher than that without joint.