Low signal-to-noise ratio acoustic emission signal arrival time identification method based on fractal dimension ratio and AR-AIC combined algorithm

IF 3.8 2区物理与天体物理 Q1 ACOUSTICS

Ultrasonics Pub Date : 2025-06-20 DOI:10.1016/j.ultras.2025.107740

Weigang Zhao , Shunli Jiang , Haoran Li , Xiangtian Gong , Yaodong Qi , Jiaqi Liang , Yechu Tian

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引用次数: 0

Abstract

To enhance the accuracy of acoustic emission (AE) signal arrival time identification in low signal-to-noise ratio environments, this study introduces a method integrating the fractal dimension ratio and AR-AIC algorithm. The fractal dimension ratio is employed to estimate the potential arrival time range, while AR-AIC further refines the estimation to determine the precise arrival time. Pencil lead break (PLB) experiments were conducted on concrete specimens to evaluate the proposed method under various conditions, including high and low signal-to-noise ratios, indistinct arrivals, and low-amplitude signals. A comprehensive comparison with traditional threshold, STA/LTA, and AR-AIC algorithms was performed, along with an assessment of localization accuracy. Experimental results indicate that the proposed approach effectively mitigates the influence of signal-to-noise ratio and amplitude on arrival time identification. Compared to conventional methods, the localization error was reduced by 47%, 23%, and 17%, respectively. These findings demonstrate the effectiveness of the proposed method in enhancing AE signal arrival time identification and source localization in complex environments.

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基于分形维数比和AR-AIC联合算法的低信噪比声发射信号到达时间识别方法

为了提高低信噪比环境下声发射信号到达时间识别的精度，提出了一种分形维数比与AR-AIC算法相结合的方法。利用分维比估计潜在到达时间范围，AR-AIC进一步细化估计，确定精确到达时间。在混凝土试件上进行了铅笔芯断头（PLB）实验，以评估所提出的方法在各种条件下的性能，包括高信噪比和低信噪比、到达模糊和低幅度信号。与传统阈值、STA/LTA和AR-AIC算法进行了全面比较，并对定位精度进行了评估。实验结果表明，该方法有效地减轻了信噪比和幅值对到达时间识别的影响。与传统方法相比，定位误差分别降低了47%、23%和17%。实验结果证明了该方法在复杂环境下增强声发射信号到达时间识别和源定位的有效性。

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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.