利用非接触激发的 Lamb 波开发复合材料层压板分层检测信号处理算法

IF 3.8 2区物理与天体物理 Q1 ACOUSTICS

Ultrasonics Pub Date : 2024-11-23 DOI:10.1016/j.ultras.2024.107524

Lea A.C. Lecointre , Ryo Higuchi , Tomohiro Yokozeki , Naoki Hosoya , Shin-ichi Takeda

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引用次数: 0

摘要

设计了一种基于小波变换分析和图像处理技术相结合的新型信号处理算法，用于评估使用创新的完全非接触式系统在 CFRP 板材中产生的λ波的分层可探测性。从空间-时间-频率域的波场中提取了多个损伤指数，并绘制成表面制图，以直观地显示其大小和定位人工分层的能力。结果表明，该算法能有效描述波的传播特征，而且尽管信号测量和计算存在不确定性，但复杂的图像比较指数能更好地检测人工缺陷并识别健康区域。

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Development of signal processing algorithms for delamination detection in composite laminates using non-contact excited Lamb waves

A novel Signal Processing algorithm based on the combination of a Wavelet Transform Analysis and Image Processing techniques is designed for assessing the delamination detectability of Lamb Waves generated with an innovative fully non-contact system in CFRP plates. Several Damage Indexes are extracted from the wavefields in spatial-time–frequency domain and plotted as surface cartographies to visualise their ability to size and localise artificial delaminations. Results show that the algorithm is efficient for characterising the waves propagation and that sophisticated Image comparison indexes show better ability to detect the artificial defects and to recognise healthy zones despite signal measurement and calculation uncertainties.

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来源期刊

Ultrasonics 医学-核医学

CiteScore

7.60

自引率

19.00%

发文量

186

审稿时长

3.9 months

期刊介绍： Ultrasonics is the only internationally established journal which covers the entire field of ultrasound research and technology and all its many applications. Ultrasonics contains a variety of sections to keep readers fully informed and up-to-date on the whole spectrum of research and development throughout the world. Ultrasonics publishes papers of exceptional quality and of relevance to both academia and industry. Manuscripts in which ultrasonics is a central issue and not simply an incidental tool or minor issue, are welcomed. As well as top quality original research papers and review articles by world renowned experts, Ultrasonics also regularly features short communications, a calendar of forthcoming events and special issues dedicated to topical subjects.