振動数の異なる2つの振動を用いた溶接残留応力の抑制法 : 超音波振動と低周波振動を用いた場合 Reduction Method for Residual Stress in Welded Joint Using Vibrations with Different Frequencies : Using Ultrasonic Vibration and Low Frequency Vibration

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著者

    • 青木 繁 AOKI Shigeru
    • 東京都立産業技術高等専門学校ものづくり工学科 Monozukuri Department, Tokyo Metropolitan College of Industrial Technology
    • 西村 惟之 NISHIMURA Tadashi
    • 東京都立産業技術高等専門学校ものづくり工学科 Monozukuri Department, Tokyo Metropolitan College of Industrial Technology
    • 栗田 勝実 KURITA Katsumi
    • 東京都立産業技術高等専門学校ものづくり工学科 Monozukuri Department, Tokyo Metropolitan College of Industrial Technology
    • 平井 聖児 HIRAI Seiji
    • ものつくり大学製造技能工芸学科 Department of Manufacturing Technologist, Institute of Technologist
    • 越水 重臣 KOSHIMIZU Shigeomi
    • 産業技術大学院大学創造技術専攻 Master Program of Innovation for Design and Engineering, Advanced Institute of Industrial Technology

抄録

Welding is widely used for constructing of many structures. Residual stress is generated near the bead because metal near the bead is heated. Tensile residual stress degrades fatigue strength. Several methods of reducing of residual stress are developed. Heat treatment and shot peening are practically used. These methods are time-consuming and require special devices. In this study, a new method of reducing residual stress is proposed. In this method, vibrations are used during welding, namely, ultrasonic vibration and low-frequency vibration. The effectiveness of the method is examined experimentally. It is concluded that tensile residual stress is reduced when ultrasonic vibration or low-frequency vibration is used. When ultrasonic vibration and low-frequency vibration are used simultaneously, the reduction rate of residual stress is large. Results of the experiment are examined by simulation qualitatively. The yield stress immediately after welding is very low because the temperature of the metal near the bead is very high. Then, an analytical model considering the yield of metal is proposed. From the simulation method, results of the experiment are demonstrated qualitatively.

収録刊行物

  • 塑性と加工

    塑性と加工 53(615), 367-371, 2012-04-25

    The Japan Society for Technology of Plasticity

参考文献:  8件中 1-8件 を表示

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    10030144939
  • NII書誌ID(NCID)
    AN00135062
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00381586
  • NDL 記事登録ID
    023744868
  • NDL 請求記号
    Z17-218
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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