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Inverse thermographic characterization of optically unresolvable through cracks in thin metal plates

机译：通过薄金属板中的裂纹无法光学分辨的反向热像图表征

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摘要

The present research explores the feasibility of a novel non-contact means for the detection and characterization of small scale, open crack-like defects within thin metal plate components. The approach employs inexpensive infrared (IR) digital camera technology (e.g. ≈$5000US) and sophisticated numerical and algorithmic means as part of an inverse solution framework aimed at inferring the nature (i.e. presence, size, orientation, etc.) of micro-scale defects that are below the optical resolution capability of the IR imaging system. The current work explores a technique for inferring the presence and character of optically unresolvable flaws penetrating metallic plate components (i.e. through cracks).
机译：本研究探索了一种新颖的非接触式方法，用于检测和表征薄金属板组件中的小尺寸，开裂状缺陷的可行性。该方法采用廉价的红外（IR）数码相机技术（例如≈$ 5000US）以及复杂的数值和算法手段，作为旨在推断微尺度的性质（即存在，大小，方向等）的逆解决方案框架的一部分。低于红外成像系统光学分辨率的缺陷。当前的工作探索了一种技术来推断穿透金属板组件（即通过裂缝）的光学上无法解决的缺陷的存在和特征。

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  • 来源
    《Mechanical systems and signal processing》 |2012年第2期|p.634-650|共17页
  • 作者

    W.Y. Jeong; C.J. Earls; W.D. Philpot; A.T. Zehnder;

  • 作者单位

    School of Civil and Environmental Engineering, 220 Hollister Hall, Ithaca, NY 14853, United States;

    rnSchool of Civil and Environmental Engineering, 220 Hollister Hall, Ithaca, NY 14853, United States;

    rnSchool of Civil and Environmental Engineering, 220 Hollister Hall, Ithaca, NY 14853, United States;

    rnSibley School of Mechanical and Aerospace Engineering, 210 Kimball Hall, Ithaca, NY 14853, United States;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    inverse problems; crack detection; thermography; crack imaging;

    机译：反问题探伤;热成像裂纹成像;

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