Application of FRP Bolt to Maglev Ground Coil


Naoki AIHARA, Takao YOSHIKAWA, Naoto MIFUNE
For the maglev railroad guideway, propulsion and levitaiton coils are set on by fastening bolts. Their materials should be non-magnetic to avoild any effects of magnetism. So we tried to make use of FRP bolts made of GFRP, CFRP and Al-Alumina MMC. We measured their mechanical strengths, relaxation of axial force after tightening and torque coefficient to evaluate applicability of FRP bolts on the railway.