PIPE STRUCTURE MADE OF FIBER REINFORCED COMPOSITE MATERIAL

摘要

PURPOSE:To provide an integral lightweight pipe structure having dimensional stability against temp. change by a method wherein rods made of a continuous unidirectional fiber reinforced composite material are oriented in the whole of a pipe member and a connection part in a tubular form and connection cores are also incorporated so as to cross in an axial direction using the same short rods to fix crossing contact parts and the inner and outer layers of a pipe are seamed in a crossing direction of + or -30-+ or -60 deg.. CONSTITUTION:A pipe member 2 is formed by integrally bonding an intermediate layer 8 consisting of an inner pipe 6 wherein continuous fibers 5 are oriented in a crossing direction of + or -30-+ or -60 deg. and a rod 7 of a continuous unidirectional fiber reinforced composite material wherein a terminal part 7a protrudes from the end part of the inner pipe 6 and an outer pipe 9 wherein continuous fibers 5 are oriented to the outer periphery of the A connection pipe 4 is formed by integrally bonding a connection core 16 wherein two or more sets of short rods 15 of a continuous unidirectional fiber reinforced material are radially crossed and incorporated so as to be opposed to the inner pipe 6 of the pipe member 2 and the terminal part 7a of the long rod 7 of the intermediate layer 8 incorporated so as to cover the outer peripheral part of the connection core 16 by a resin layer 17.