抄録
The positive use of carbon fiber reinforced plastics (CFRP) contributes to the low carbon society because the weight saving of their structures achieves the fuel-saving. Recently, the plain woven CFRP laminates are used for structure of ship and automobile. In the laminating process of the plain woven CFRP laminates, the relative gap of the crimp position between the periodical fiber undulations occurs. However, the relationship between this gap and the mechanical properties has not been clarified enough. In this study, therefore, the effect of the relative gap of the crimp position between the periodical fiber undulation on tensile strength and microscopic damages of plain woven CFRP laminates was investigated experimentally and numerically. As the result, the tensile strength of CFRP laminates with staggered sequence of the crimp gap was lower than that with symmetry sequence. These tensile strengths were also related with mode I type transverse crack density occurring.
