Forming Properties of Laser Peen Forming

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  • 鷺坂 芳弘
    静岡県工業技術研究所
  • 神谷 眞好
    静岡県工業技術研究所 浜松工業技術支援センター
  • 松田 稔
    静岡県工業技術研究所 浜松工業技術支援センター
  • 太田 幸宏
    静岡県工業技術研究所 浜松工業技術支援センター

Bibliographic Information

Other Title
  • レーザーピーンフォーミングの変形特性
  • レーザーピーンフォーミング ノ ヘンケイ トクセイ : フェムトビョウ レーザー オ モチイタ レーザーピーンフォーミング ニ ヨル ハクバン ノ マゲ カコウ(ダイ2ホウ)
  • — Thin-Sheet-Metal Bending by Laser Peen Forming with Femtosecond Laser II —
  • — フェムト秒レーザーを用いたレーザーピーンフォーミング<br>による薄板の曲げ加工（第2報） —

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Abstract

Laser peen forming is an incremental sheet metal forming using shock waves induced by a short pulse laser. The authors have adopted laser peen forming with a femtosecond laser for thin-sheet-metal bending. To investigate properties of such forming, several thin sheets of pure aluminum, phosphor bronze and austenitic stainless steel were bent. Results showed that there is a relationship between bending angle and the product of spot diameter and fluence (density of pulse energy). Forming a spot shape was effective in changing bending efficiency. These results are useful for controlling bending deformation. The influences of material properties and sheet thickness were investigated. It was found that thinner and softer sheet metal was easy to bend. Moreover, the forming properties of phosphor bronze and stainless steel were easily affected by the condition of the laser emitter.

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