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首页> 外文会议>Fifth International Conference on Optical and Photonics Engineering >Artificial defects in CFRP composite structure for thermography and shearography nondestructive inspection
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Artificial defects in CFRP composite structure for thermography and shearography nondestructive inspection

机译：用于热成像和剪切成像无损检测的CFRP复合结构中的人为缺陷

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摘要

Locating defects in CFRP composite materials is a hot topic in nondestructive inspection (NDI). Beside classical NDI technique, such as ultrasound testing (UT), contactless techniques are actively studied. Generally manufacturers of CFRP structure incorporate artificial defects in the bulk, with different extents and depths, in order to study the performance of a specific NDI technique to detect the defect. One of the most common defects in CFRP is delamination between two layers. This is simulated by inserting teflon sheets which, like air, acts as ultrasound blocker in UT. When such reference part is used to assess NDI performance of thermography or shearography, we only observe respectively the thermal or mechanical response of teflon with respect to external loading used with these techniques. In this work, we assess other possibilities for artificial defects in CFRP matrix. For that a CFRP structure was developed and which incorporates teflon, flat-bottom holes and delamination obtained by the pull-out method. We experimentally studied the signals and we discuss the difference between the various artificial defects methods.
机译：在无损检测（NDI）中，查找CFRP复合材料中的缺陷是一个热门话题。除了经典的NDI技术（例如超声测试（UT））以外，非接触技术也在积极研究中。通常，CFRP结构的制造商会以不同的程度和深度合并大量的人工缺陷，以研究特定NDI技术检测缺陷的性能。 CFRP中最常见的缺陷之一是两层之间的分层。这是通过插入聚四氟乙烯薄板来模拟的，该聚四氟乙烯薄板像空气一样在UT中用作超声阻断剂。当此类参考零件用于评估热成像或剪切成像的NDI性能时，我们仅分别观察到聚四氟乙烯相对于这些技术所使用的外部载荷的热响应或机械响应。在这项工作中，我们评估了CFRP基质中人为缺陷的其他可能性。为此，开发了一种CFRP结构，该结构结合了聚四氟乙烯，平底孔和通过拉出法获得的分层。我们通过实验研究了信号，并讨论了各种人工缺陷方法之间的区别。

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  • 会议地点 Singapore(SG)
  • 作者

    P. Blain; J-F. Vandenrijt; F. Languy; M. Kirkove; L.-D. Theroux; J. Lewandowski; M. Georges;

  • 作者单位

    Centre Spatial de Liege, University of Liege, Liege Science Park, 4031 Angleur, Belgium;

    Centre Spatial de Liege, University of Liege, Liege Science Park, 4031 Angleur, Belgium;

    Centre Spatial de Liege, University of Liege, Liege Science Park, 4031 Angleur, Belgium;

    Centre Spatial de Liege, University of Liege, Liege Science Park, 4031 Angleur, Belgium;

    Centre Technologique en Aerospatiale, Place de la Savane 5555, St-Hubert QC J3Y 8Y9, Canada;

    Centre Technologique en Aerospatiale, Place de la Savane 5555, St-Hubert QC J3Y 8Y9, Canada;

    Centre Spatial de Liege, University of Liege, Liege Science Park, 4031 Angleur, Belgium;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nondestructive inspection; shearography; thermography;

    机译：无损检查；剪切成像热成像;
  • 入库时间 2022-08-26 14:02:08

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