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Comparative study of ultrasonic techniques for reconstructing the multilayer structure of composites

机译：复合材料多层结构重构超声技术的比较研究

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摘要

The multilayer structure of fiber-reinforced polymers may be extracted by ultrasonic pulse-echo inspection. Depending on the employed ultrasonic frequency and subsequent processing methodology, different depth resolution and dynamic depth range can be achieved. This study compares the performance of different ultrasonic pulse-echo approaches for extracting the ply-by-ply structure of multilayered composites. The following methodologies are studied: Method 1: 50 MHz, 15 MHz, and 5 MHz ultrasound with low-pass filtering using analysis of the instantaneous amplitude, Method 2: 15 MHz ultrasound with Wiener deconvolution (and autoregressive spectral extrapolation) using analysis of the instantaneous amplitude, and Method 3: 5 MHz ultrasound with low-pass or log-Gabor filtering using analysis of the instantaneous phase. In the simulation study, the performance of the various techniques is investigated on synthetic data representative for a 24-ply carbon fiber reinforced polymer. The robustness of the techniques is evaluated for different signal-to-noise ratios. The various techniques are further investigated on experimental data of a 24-ply cross-ply carbon fiber reinforced polymer. The ply-by-ply structure is extracted and presented in the form of both B-scan and C-scan images. The thickness of each ply is estimated for quantitative analysis. The obtained results indicate that the 5 MHz ultrasound coupled to analytic-signal analysis with log-Gabor filter shows the best performance for reconstructing the multilayer structure of the studied composites.
机译：可以通过超声波脉冲回波检查提取纤维增强聚合物的多层结构。根据所采用的超声波频率和随后的加工方法，可以实现不同的深度分辨率和动态深度范围。该研究比较了不同超声波脉冲回波方法的性能，用于提取多层复合材料的倍数结构。研究了以下方法：使用瞬时振幅的分析，方法1：50MHz，15MHz和5MHz超声波，使用瞬时振幅分析，使用分析瞬时幅度，以及方法3：5MHz超声，使用瞬时相的分析进行低通或对数滤波。在仿真研究中，研究了24层碳纤维增强聚合物的合成数据代表的各种技术的性能。评估技术的鲁棒性以针对不同的信噪比进行评估。进一步研究了各种技术，用于在24层交叉层碳纤维增强聚合物的实验数据上进行研究。以B扫描和C扫描图像的形式提取并呈现底层结构。估计每个层的厚度估计用于定量分析。所得结果表明，使用Log-Gabor滤波器的5MHz超声波耦合到分析信号分析，显示了重建所研究复合材料的多层结构的最佳性能。

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  • 来源
    《NDT & E international》 |2021年第7期|102460.1-102460.17|共17页
  • 作者

    Xiaoyu Yang; Erik Verboven; Bing-feng Ju; Mathias Kersemans;

  • 作者单位

    Mechanics of Materials and Structures (UGent-MMS) Ghent University Ghent Belgium The State Key Laboratory of Fluid Power Transmission and Control Zhejiang University Hangzhou People's Republic of China;

    Mechanics of Materials and Structures (UGent-MMS) Ghent University Ghent Belgium;

    The State Key Laboratory of Fluid Power Transmission and Control Zhejiang University Hangzhou People's Republic of China;

    Mechanics of Materials and Structures (UGent-MMS) Ghent University Ghent Belgium;

  • 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

    Ultrasonics testing; Comparative study; Deconvolution technique; Analytic-signal; Multilayer composite; Interply track;

    机译：超声波测试;比较研究;去卷积技术;分析信号;多层复合材料;互动;

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