PROCESS AND APPARATUS FOR PRODUCING REINFORCING-FIBER STRIP BASE HAVING CIRCULAR-ARC PART, AND MULTILAYER STRUCTURE, PREFORM, AND FIBER-REINFORCED RESIN COMPOSITE MATERIAL EACH COMPRISING OR PRODUCED USING THE BASE

摘要

Provided are a process and an apparatus for obtaining easily and securely a reinforcing-fiber strip substrate in which reinforcing-fiber yarns are laid throughout the whole surface of a curved substrate. The process and apparatus for producing a reinforcing-fiber strip substrate having a circular-arc part are characterized by : bringing one surface of a strip-shaped, unidirectional reinforcing-fiber substrate comprising reinforcing-fiber strands arranged in parallel with each other in one direction, into contact with a flexible member; deforming the unidirectional reinforcing-fiber substrate being contacted into a circular-arc shape by deforming at least a part of the flexible member into a circular-arc shape in a direction extending along its contact surface with the unidirectional reinforcing-fiber substrate; and thereafter, separating the flexible member from the unidirectional reinforcing-fiber substrate that has been deformed. Further, provided are a layered structure, a preform, and a fiber-reinforced composite material each comprising or produced using the substrate.