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Damage detection tomography based on guided waves in composite structures using a distributed sensor network

机译：基于分布式传感器网络的复合结构中基于导波的损伤检测层析成像

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摘要

Structural health monitoring (SHM) based on guided waves allows assessing the health of a structure due to the sensitivity to the occurrence of delamination. However, wave propagation presents several complexities for effective damage identification in composite structures. An efficient implementation of a guided wave-based SHM system requires an accurate analysis of collected data to obtain a useful detection. This paper is concerned with the identification of small emerging delaminations in composite structural components using a sparse array of surface ultrasonic transducers. An ultrasonic-guided wave tomography technique focused on impact damage detection in composite plate-like structures is presented. A statistical damage index approach is adopted to interpret the recorded signals, and a subsequent graphic interpolation is implemented to reconstruct the damage appearance. Experimental tests carried out on a typical composite structure demonstrated the effectiveness of the developed technique with the aim to investigate the presence and location of damage using simple imaging reports and a limited number of measurements. A traditional ultrasonic inspection (C-scan) is used to assess the methodology.
机译：基于导波的结构健康监测（SHM）可以评估结构的健康状况，因为它对分层的发生非常敏感。然而，波传播为复合结构的有效损伤识别提出了一些复杂性。基于导波的SHM系统的有效实现需要对收集到的数据进行准确的分析以获得有用的检测结果。本文涉及使用表面超声换能器的稀疏阵列识别复合结构部件中出现的小分层。提出了一种复合板状结构冲击损伤检测的超声引导层析成像技术。采用统计损伤指数方法来解释记录的信号，并执行随后的图形插值来重建损伤外观。在典型的复合结构上进行的实验测试证明了所开发技术的有效性，旨在使用简单的成像报告和有限的测量结果来研究损伤的存在和位置。传统的超声波检查（C扫描）用于评估方法。

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  • 来源
    《Optical engineering》 |2016年第1期|011007.1-011007.11|共11页
  • 作者

    Vittorio Memmolo; Leandro Maio; Natalino Daniele Boffa; Ernesto Monaco; Fabrizio Ricci;

  • 作者单位

    University of Naples FEDERICO Ⅱ, Department of Industrial Engineering-Aerospace Division, Via Claudio, 21, Naples 80125, Italy;

    University of Naples FEDERICO Ⅱ, Department of Industrial Engineering-Aerospace Division, Via Claudio, 21, Naples 80125, Italy;

    University of Naples FEDERICO Ⅱ, Department of Industrial Engineering-Aerospace Division, Via Claudio, 21, Naples 80125, Italy;

    University of Naples FEDERICO Ⅱ, Department of Industrial Engineering-Aerospace Division, Via Claudio, 21, Naples 80125, Italy;

    University of Naples FEDERICO Ⅱ, Department of Industrial Engineering-Aerospace Division, Via Claudio, 21, Naples 80125, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    guided waves; composites; delaminations; damage detection; structural health monitoring; tomography;

    机译：导波复合材料分层损坏检测;结构健康监测;断层扫描;

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