サブナノ秒マイクロチップレーザーによるレーザーピーンフォーミングの変形特性

DOI Web Site Web Site 参考文献8件
  • 鷺坂 芳弘
    静岡県工業技術研究所，浜松工業技術支援センター
  • 川崎 泰介
    理化学研究所，放射光科学研究センター 分子科学研究所
  • YAHIA Vincent
    分子科学研究所
  • 平等 拓範
    理化学研究所，放射光科学研究センター 分子科学研究所
  • 佐野 雄二
    分子科学研究所 大阪大学，産業科学研究所

書誌事項

タイトル別名
  • Deformation Properties of Laser Peen Forming Using Sub-nanosecond Microchip Laser
  • サブナノビョウ マイクロチップレーザー ニ ヨル レーザーピーンフォーミング ノ ヘンケイ トクセイ

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抄録

<p>A high-power pulsed microchip laser, which has a pulse duration of sub-nanosecond order, had been developed. A focused microchip laser pulse can induce an effective shock wave for deforming the irradiated metal surface plastically. When a sheet metal surface is scanned by the laser, dieless sheet forming, called laser peen forming, is achieved through the accumulation of such plastic deformations. The authors have applied the method to sheet metal bending. A tamping layer, such as water, on a target surface encourages laser-induced shock waves. Therefore, the sheet metals were irradiated in water. Several materials were bent, and the feasibility of the process was confirmed. Fundamental deformation properties in terms of forming parameters, such as defocusing, pulse energy, material hardness, and thickness, were examined. It was confirmed that, qualitatively, the process had similar deformation modes to those obtained by peen forming. However, when fluence was greatly increased by focusing or increasing the pulse energy, laser absorption by water reduced the bending deformation. </p>

収録刊行物

  • 塑性と加工

    塑性と加工 62 (720), 8-13, 2021

    一般社団法人 日本塑性加工学会

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