A Study on Self-Resistance Welding by Utilizing Conductivity of Carbon Fiber Reinforced Thermo-Plastics
A Study on Self-Resistance Welding by Utilizing Conductivity of Carbon Fiber Reinforced Thermo-Plastics
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利用碳纤维增强热塑性塑料导电性的自电阻焊研究
DOI：
10.1299/kikaia.79.555
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Tetsuo Yasuoka
中科院分区：
文献类型：
--
作者：
Masatobu Kawagoe;Y. Mizutani;A. Todoroki;R. Matsuzaki;Tetsuo Yasuoka
在这项研究中，提出了一种新的焊接方法，利用CFRTP（碳纤维增强热塑性塑料）的导电性。电流通过CFRTP单搭接接头施加在厚度方向上。由于接合表面的电阻在电流路径中最高，所以接合表面优先通过焦耳加热来加热。在这项研究中，点焊和表面焊接。通过施加5.0V或10.3V的恒定电压，将接头表面加热到材料的熔化温度Tm以上并进行焊接。为了评估焊接接头的搭接剪切强度（LSS），进行拉伸搭接剪切强度试验。结果表明，点焊的拉剪真应力为31.0MPa，堆焊的LSS为22.0MPa。这些强度与传统电阻焊方法焊接的强度相当。试验还发现，接头的焊接压力对LSS有一定的影响。
In this study, a new welding method which utilizes conductivity of CFRTP (Carbon Fiber Reinforced Thermo-Plastic) is proposed. Electrical current is applied through the CFRTP single-lap joints in thickness direction. Since resistance of joining surface is the highest in the current path, the joining surface is preferentially heated by Joule heating. In this study, spot welding and surface welding were conducted. By applying constant voltage of 5.0V or 10.3V, the joint-surfaces were heated above melting temperature T m of the material and were welded. In order to evaluate lap-shear strength (LSS) of welded joints, tensile lap-shear strength tests were conducted. As a result, the tensile lap-shear true stress of spot welding is 31.0MPa and LSS of surface welding is 22.0MPa. These strengths were comparable to those that were welded by traditional resistance welding method. It is also found that LSS is changed with welding pressure of joint parts.