• 제목/요약/키워드: Dissimilar Material Joing

검색결과 2건 처리시간 0.014초

이종재료의 전자기 결합 (Electromagnetic Joining of Dissimilar Materials)

  • 박영배;김헌영;오수익
    • 한국소성가공학회:학술대회논문집
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    • 한국소성가공학회 2002년도 춘계학술대회 논문집
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    • pp.33-38
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    • 2002
  • Nowdays, related with vehicle weight reduction, many automotive maker are trying to develop spaceframe. If aluminum member and steel member are applied together in constructing spaceframe, there will be many advantages in aspect of inclosing strength and saving weight of automotive. In this case, joining method of aluminum and steel members has to be proposed. For this method, electomagnetic joining has many advantages compared to welding. In this paper, joining of aluminum tube and steel tube using eletomagnetic pressure was studied and strength of joint was evaluated through commission test.

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집중유도형 교류전위차법에 의한 강자성체 및 상자성체의 2차원 표면결함의 비파괴평가 (Nondestructive Evaluation of 2-Dimensional Surface Crack in Ferromagnetic Metal and Paramagnetic Metal by ICFPD Technique)

  • 김훈;장자철웅;정세희
    • 대한기계학회논문집
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    • 제19권5호
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    • pp.1202-1210
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    • 1995
  • Aiming at nondestructive evaluation of defect with high accuracy and resolution, ICFPD(Induced Current Focusing Potential Drop) technique was newly developed. This technique can be applied for locating and sizing of defects in components with not only simple shape such as plain surface but also more complex shape and geometry such as curved surface and dissimilar joing. This paper describes the principle of ICFPD technique and also the results of 2-dimensional surface crack in ferromagnetic metal(A508 Cl. III steel) and paramagnetic metal (pure aluminum and stainless 304 steel) measured by this technique. Results are that surface defects in each specimen are detected with the difference of potential drop, and potential drops are distributed a similar shape for each metal and each depth. The normalized potential drop ( $V_{\delta}$2/$^{t}$ / $V_{{\delta} 2}$$^{-1}$) max. in the vicinity of defect is varied with the depth of defect. Therefore, ICFPD technique can be used for the evaluation of defect not only in ferromagnetic metal but also in paramagnetic steel..