レーザスペックルを用いた塑性ひずみの非接触測定（第１報）　レーザスペックルの強度分布を用いた鋼材の塑性ひずみの測定

• 加藤 章

  中部大学工学部機械工学科

• 川村 満夫

  中部大学大学院

書誌事項

タイトル別名

• Non-Contact Measurement of Plastic Strain Using Laser Speckle, I. Mesurement of Plastic Strain in Steel Specimens by Means of Intensity Distribution of Laser Speckle.
• レーザ スペックル ノ キョウド ブンプ オ モチイタ コウザイ ノ ソセイ

抄録

This paper presents a method to measure the plastic strain of steel specimens with no contact using the laser speckle method. This method is based on a phenomenon that the intensity distribution of the laser speckle changes depending on surface profile change occurred by plastic deformation. The intensity distribution of the laser speckle was analyzed quantitatively using an image processing system. The laser speckle pattern and surface profile were observed for specimens of three kinds of steels plastically deformed by static tension. The distribution of the speckle intensity was evaluated after smoothing by calculating correlation function. A new parameter to express the width of the distribution was derived. It was clarified that there is a fixed relation between speckle distribution and the magnitude of plastic strain and it is possible to estimate plastic strain using the speckle distribution. It was also found that the relation between speckle distribution and plastic strain is almost identical for three kinds of steels treated in this experiment.

収録刊行物

• 材料

  材料 43 (489), 696-702, 1994

  公益社団法人 日本材料学会

キーワード

• Non-destructive inspection
• Optical measurement
• Plastic strain
• Laser speckle
• Image processing
• Correlation function
• Surface profile

詳細情報

• CRID: 1390282680369723904
• NII論文ID: 110002294179
• NII論文ID: 10002932755
• NII書誌ID: AN00096175
• DOI: 10.2472/jsms.43.696
• ISSN: 18807488
• ISSN: 05145163
• ISSN: http://id.crossref.org/issn/05145163
• NDL書誌ID: 3881424
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3881424
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可