Forming carbon fiber base materials such as Non-Crimp Fabrics (NCFs), which have been increasingly applied mainly to aircraft, into complex-shaped products causes defects such as fiber wrinkling. In general, quality can be improved by optimizing the forming conditions. However, for greater improvement of the quality, making the fiber base material itself more formable is effective. Mitsubishi Heavy Industries, Ltd. is developing a technology to predict mesoscopic deformation behavior of materials to optimize the material composition through forming simulation using a mesoscale material model. This report describes the results of evaluating the deformation behavior of fibers in shearing test by constructing a mesoscale material model of an NCF.
