| 摘要 |
PURPOSE:To enhance the strength of bonding section of a metal cylinder and a FRP cylinder by inserting a projected section of the metal cylinder into a channel section of the FRP cylinder, and bonding the outer surface of a FRP ring integrated with the outer periphery of said projected section to the inner surface of said channel. CONSTITUTION:A projected section 6 is formed by shaving the inner and outer peripheral surfaces of ends of a metal cylinder 5, and a channel 7 of U-shaped section is formed on the end surface of a FRP cylinder 1. Recessed sections 9 are formed respectively on the inner and outer peripheral surfaces of the projected section 6, and fiber reinforced plastic ring 10 of thermoplastic resin is inserted into said recessed sections 9, outside of which a fiber reinforced plastic ring 8 of U-shaped section prepared by thermoplastic resin is covered. The ring 8 and the ring 10 are heated and integrated with the projected section 6, and said projected section 6 is inserted into the channel 7, while the outer surface of the integrated ring 8 is bonded to the inner periphery of the channel section 7. By said arrangement, the bonding section of the metal cylinder and the FRP cylinder is constituted of FRP to enhance the bonding strength. |
