Abstract
Nowadays, a biomass-based material, called "green composites" attracts considerable attention, because this material consists of natural fibers and biodegradable or thermoplastic resin. On the other hand, green composites are inferior to strength and stiffness in comparison with GFRP and CFRP, and therefore limited in practical use to only secondary structural members. The purpose of this study is thus to develop a green composite with high strength and stiffness through cyclic load application. In the past, the process of uniaxial cyclic loading was applied for a short ramie/polypropylene (PP) composite. According to the result, the composite mechanical properties were improved through this process, but showed anisotropy. In this study, we tried to apply the process of a biaxial cyclic loading for a short ramie/PP composite to improve the mechanical and anisotropic properties.
