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<p>This paper presents a robust and efficient optical method for measuring thin-sheet metal parts using a structured-light 3D scanner. First, it describes the characteristics of the optical device used, including the underlying physical principles, limitations, and procedure for assessing the system's accuracy. Next, a method for calculating the thickness of the parts is proposed and evaluated using geometries derived from CAD models, as well as destructive measurements performed on a real part. Subsequently, an acquisition strategy that accounts for the scanner's limitations is introduced and experimentally validated. Lastly, the proposed methodology is applied to thin-sheet components produced by incremental forming as illustrative examples. This final section highlights the influence of tool geometry and lubrication conditions on resulting part geometries. Therefore, the proposed inspection strategy opens up promising perspectives, particularly for optimizing forming parameters in the SPIF process.</p>

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Structured Light 3D Scanning Method For Shape And Thickness Measurement Of Thin Metal Sheets With Application To Single Point Incremental Forming

  • 期刊论文

  • 发表日期：

    2025年10月23日

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  • Emanuel Badulescu,
  • Yannick Argouarc’h,
  • Eduard Nitu,
  • Monica Daniela Iordache,
  • Claudiu Badulescu

摘要

This paper presents a robust and efficient optical method for measuring thin-sheet metal parts using a structured-light 3D scanner. First, it describes the characteristics of the optical device used, including the underlying physical principles, limitations, and procedure for assessing the system's accuracy. Next, a method for calculating the thickness of the parts is proposed and evaluated using geometries derived from CAD models, as well as destructive measurements performed on a real part. Subsequently, an acquisition strategy that accounts for the scanner's limitations is introduced and experimentally validated. Lastly, the proposed methodology is applied to thin-sheet components produced by incremental forming as illustrative examples. This final section highlights the influence of tool geometry and lubrication conditions on resulting part geometries. Therefore, the proposed inspection strategy opens up promising perspectives, particularly for optimizing forming parameters in the SPIF process.