Proposal of Analytical Model of Tensile Property of Untwisted Carbon Nanotube Yarn and Estimation of Tensile Property of Carbon Nanotube

Spinnable carbon nanotubes enable us to produce nanotube assemblies such as yarn and sheet without binder. Untwisted is one of the assemblies. yarns are composed unidirectionally aligned along with axis, thus untwisted an ideal preform for composite fabrication high mechanical performance. In this study, varied densities were prepared by using spinnable forests, tensile properties examined. Furthermore, analytical model was proposed based on shear-lag model. The can predict behavior from modulus strength a nanotube, volume packing fraction yarn, shear stress exerted slipped region nanotube. Then, applied estimate elastic yarns. our case, estimated about 200 GPa, 1.9 GPa.