OS0814 CFRTP継手の電気抵抗を利用した融着法に関する研究(OS8-3 接合材の強度特性・接合プロセス,OS-8 機械の接合部・接触部のプロセスと疲労・強度問題2)

概要

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CFRTP (Carbon fiber reinforced thermoplastic) has the superior properties such as high toughness, high productivity, recycling efficiency and repairability when compared with CFRP (Carbon fiber reinforced plastic). Another advantage of CFRTP is its weldability. Although several welding methods, such as resistance welding, ultrasonic welding and induction welding have been proposed, a new welding method which using electrical resistance of material itself is proposed in the study. In other words, electric current is loaded on through-thickness direction of single lap joint, and resin of welding area is melting. In this method, electric resistance of joint part is peak in the current pathway, welding area can be preferentially heated up. In this study, spot welding and surface welding were conducted. Tensile lap-shear tests were conducted for CFRTP joints welded by the proposed method. As a result, the tensile lap-shear strength (LSS) of spot welding is 31.0MPa and LSS of surface welding is 22.0MPa. Also, LSS is changed with welding pressure of joint parts.
一般社団法人日本機械学会の論文
2011-07-16