THREE-DIMENSIONAL BRAIDING, FIBER REINFORCED COMPOSITE MATERIAL, AND METHOD FOR PRODUCING FIBER REINFORCED COMPOSITE MATERIAL

摘要

Disclosed is cylindrical three-dimensional braiding. Core yarn layers of the braiding include a plurality of core yarns extending in the axial direction. Through yarns of the braiding extend so as to pass through the core yarn layers. The core yarn layers are provided by four layers or more. The through yarns include through yarns which pass through adjacent two core yarn layers and extend so as to be folded back. The strength of a selected core yarn layer among the core yarn layers provided between the outermost core yarn layer and the innermost core yarn layer is less than the strength of the other core yarn layers.