抄録
Manufacturing composite pipes, lay-up method is generally used to give thickness. However, the method requires several routine processes, and the expense becomes high. Moreover, interfacial and interlamina problem occurs. In order to overcome these problems, the triple layered tubular braiding machine was developed previously. The pipe fabricated by the machine has higher strength than the normal lay-up method. In this study, the energy absorption properties of triple layered tubular braided composite pipes were investigated. Particularly the relationship among reinforcement constructions, fracture morphology and the energy absorption performance were focused. Consequently although triple layered tubular braided composite pipe had good energy absorption properties by showing progressive crushing, energy absorption properties were different among three types of specimens. From these results, it is suggested that location of middle axial fibers dominate not only fracture morphology but also energy absorption performance of triple layered braided composite pipes.
