• Title/Summary/Keyword: 기계접합

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Effects of Bonding Conditions on Mechanical Strength of Sn-58Bi Lead-Free Solder Joint using Thermo-compression Bonding Method (열압착 접합 조건에 따른 경·연성 인쇄회로기판 간 Sn-58Bi 무연솔더 접합부의 기계적 특성)

  • Choi, Ji-Na;Ko, Min-Kwan;Lee, Sang-Min;Jung, Seung-Boo
    • Journal of the Microelectronics and Packaging Society
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    • v.20 no.2
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    • pp.17-22
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    • 2013

  • We investigated the optimum bonding conditions for thermo-compression bonding of electrodes between flexible printed circuit board(FPCB) and rigid printed circuit board(RPCB) with Sn-58Bi solder as interlayer. In order to figure out the optimum bonding conditions, peel test of FPCB/RPCB joint was conducted. The peel strength was affected by the bonding conditions, such as temperature and time. The fracture energies were calculated through F-x (Force-displacement) curve during peel test and the relationships between bonding conditions and fracture behaviors were investigated. The optimum condition for the thermo-compression bonding with Sn-58Bi solder was found to be temperature of $195^{\circ}C$ and time of 7 s.

  • https://doi.org/10.6117/kmeps.2013.20.2.017 인용 PDF KSCI

Mechanical Properties of Joints according to Welding Methods and Sensitivity Analysis of FSW's Welding Variables for A6005 Extruded Alloy of Rolling Stock (철도차량용 A6005 압출재의 용접방법에 따른 접합부 기계적 특성 및FSW 용접 변수의 민감도 분석)

  • Kim, Weon-Kyong;Won, Si-Tae;Goo, Byeong-Choon
    • Journal of the Korean Society for Railway
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    • v.13 no.2
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    • pp.131-138
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    • 2010

  • Recently, extruded aluminium-alloy panels have been used in the car bodies in order to meet the needs for the speed-up and light-weight of the railway vehicles. Most of the car bodies were jointed by arc weldings, like GMAW (GasMetal Arc Welding) and GTAW (Gas Tungsten Arc Welding), but these weldings became fairly worse the mechanical properties of the junction than the base metal. Nowadays, FSW (Friction Stir Welding), which is superior to the arc weldings, has been applied in the railway vehicles. In this study, the mechanical properties of the joints in both FSW and GMAW for A6005 extruded aluminium-alloy sheets have discussed. In addition, the relationships between the welding conditions and the mechanical properties for the joint of FSW have analyzed through the sensitivity analysis. It can be concluded that the mechanical properties for the joint of FSW are better than those of GMAW and the welding speed is the most sensible welding condition in the process of FSW.

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