開繊および織物炭素繊維を抵抗発熱体に用いた熱可塑性CFRPの融着接合挙動に及ぼす継手部寸法の影響

抄録

This study aims to stabilize the resistance welding of carbon fiber reinforced thermoplastic (CFRTP) using spread or woven carbon fiber heating element. The joined CFRTP parts was sateen weave CF/PPS laminates, and the material used for the resistance heating element was spread carbon fiber and plain weave carbon fiber. The effects of processing conditions such as aspect ratio of fusion joining part, applied current, conduction time, and also material conditions such as resistance heating element were investigated experimentally. The contents of evaluation were temperature distribution of resistance heating element by using a thermography, welding area ratio measured by image analysis and monitoring of electricity. From the experimental results, in the case of width size change, it was suitable for resistance welding of large area. On the other hand, in the case of length size change, it was not suitable for resistance welding because the edge effect occurred around the electrode. Subsequently, in the case of using the spread carbon fiber as resistance heating element, it was found that the thermal distribution was unevenness because of uneven distribution of carbon fibers.