アルミニウム合金のレーザーマイクロスポット重ね溶接におけるインプロセスモニタリングと適応制御 : 熱放射による部分溶込み溶接のための適応制御法 In-Process Monitoring and Adaptive Control in Laser Micro-Spot Lap Welding of Aluminum Alloy : Adaptive Control by Heat Radiation for Partially-Penetrated Welding

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This paper presents a new procedure for in-process monitoring and adaptive control that has been developed for micro-spot lap welding of A3003 aluminum alloy sheets of 0.1 mm and 1 mm in thickness. The objective of this process is to consistently produce sound laser partial-penetration welds. Observations revealed that the reflected laser beam and the heat radiated from the weld area were effective as process-monitoring signals in detecting melting, keyhole formation and hole generation during laser irradiation. Laser pulse width and peak power during the irradiation of a fundamental YAG laser beam were controlled at regular 0.15ms intervals on the basis of the heat radiation signal being employed to detect hole generation. Investigation of 20 samples revealed that only four non-bonded welds with holes were formed under conventional conditions. In contrast sound partially penetrated spot welds were produced in all 20 samples subjected to laser lap welding under the proposed in-process monitoring and adaptive control method.

収録刊行物

  • レーザー研究

    レーザー研究 32(5), 357-363, 2004-05-15

    The Laser Society of Japan

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被引用文献:  4件中 1-4件 を表示

各種コード

  • NII論文ID(NAID)
    10012932435
  • NII書誌ID(NCID)
    AN00255326
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03870200
  • NDL 記事登録ID
    6953260
  • NDL 雑誌分類
    ZN33(科学技術--電気工学・電気機械工業--電子工学・電気通信)
  • NDL 請求記号
    Z16-1040
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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