Enhanced probabilistic damage localization for composite plate based on joint recurrence plots

IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2024-10-23 DOI:10.1016/j.compstruct.2024.118671

Chunbing Zhang, Xiaofeng Liu, Daiping Wei, Lin Bo

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Abstract

Localizing damage is a key aspect of monitoring composite laminate structural health. To address the problem of generating the damage index (DI) of composite laminates using Lamb waves, a reconstruction approach for probabilistic damage inspection (RAPID) based on joint recurrence plots (JRP) was proposed. First, the dynamics of the Lamb wave signals are analyzed using phase space reconstruction. Second, the damage information in each sensing path is represented using JRP, and the DI based on the JRP is built with variational auto-encoder (VAE). Finally, the relative magnitude of the DI was employed to modify RAPID’s weight distribution function, allowing for composite plate damage localization detection. The findings of finite element modeling and experiment data reveal that the approach can achieve accurate localization imaging of the composite plate’s interior damage while also properly identifying the damage under 20 dB and 10 dB noise interference. The approach does not require an understanding of Lamb wave dispersion characteristics and involve the extraction of complicated wave packet signals, making it promising for structural health monitoring based on damage index.

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基于联合复现图的复合板损伤概率定位增强技术

定位损伤是监测复合材料层压板结构健康状况的一个关键方面。为解决利用 Lamb 波生成复合材料层压板损伤指数（DI）的问题，提出了一种基于联合重现图（JRP）的概率损伤检测重构方法（RAPID）。首先，利用相空间重构分析了 Lamb 波信号的动态。其次，使用 JRP 表示每个传感路径中的损坏信息，并使用变异自动编码器 (VAE) 建立基于 JRP 的 DI。最后，利用 DI 的相对大小来修改 RAPID 的权重分布函数，从而实现复合板损伤定位检测。有限元建模和实验数据的结果表明，该方法可以实现复合板内部损伤的精确定位成像，同时还能在 20 dB 和 10 dB 噪声干扰下正确识别损伤。该方法不需要了解 Lamb 波的频散特性，也不需要提取复杂的波包信号，因此有望用于基于损伤指数的结构健康监测。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.