连续简化小波变换在框架结构损伤检测中的应用

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2025-02-28 DOI:10.1016/j.apacoust.2025.110621

Morteza Saadatmorad , Ramazan-Ali Jafari-Talookolaei , Samir Khatir , Amine Ammar , Hamidreza Ghandvar , Thanh Cuong-Le

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引用次数: 0

摘要

小波变换广泛应用于信号的时频分析。但是，小波函数的选取和小波函数的消失矩会限制其在损伤检测中的有效性。为了解决这个问题，我们介绍了节俭小波变换（FWT）和它的连续版本，连续节俭小波变换（CFWT）。然后，我们应用CFWT来检测框架结构的损伤，展示了一种解决该问题的新方法。数值模拟和实验结果表明，离散和连续小波变换均能提供高精度的损伤检测。此外，结果表明，连续节约型小波变换在所有场景下都优于传统的连续小波变换。

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Continuous frugal wavelet transform for damage detection in frame structures

Wavelet transform is widely used for analyzing signals in the time–frequency domain. However, its effectiveness in damage detection can be limited by the selection of wavelet function and its vanishing moments. To address this, we introduce the Frugal Wavelet Transform (FWT) and its continuous version, the Continuous Frugal Wavelet Transform (CFWT). We then apply the CFWT to detect damage in frame structures, showcasing a novel approach to this problem. The results demonstrate that both the discrete and continuous frugal wavelet transforms provide highly accurate damage detection, as confirmed through numerical simulations and experimental tests. Furthermore, the results show that the Continuous Frugal Wavelet Transform consistently outperforms the traditional Continuous Wavelet Transform across all scenarios.

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来源期刊

Applied Acoustics 物理-声学

CiteScore

7.40

自引率

11.80%

发文量

618

审稿时长

7.5 months

期刊介绍： Since its launch in 1968, Applied Acoustics has been publishing high quality research papers providing state-of-the-art coverage of research findings for engineers and scientists involved in applications of acoustics in the widest sense. Applied Acoustics looks not only at recent developments in the understanding of acoustics but also at ways of exploiting that understanding. The Journal aims to encourage the exchange of practical experience through publication and in so doing creates a fund of technological information that can be used for solving related problems. The presentation of information in graphical or tabular form is especially encouraged. If a report of a mathematical development is a necessary part of a paper it is important to ensure that it is there only as an integral part of a practical solution to a problem and is supported by data. Applied Acoustics encourages the exchange of practical experience in the following ways: • Complete Papers • Short Technical Notes • Review Articles; and thereby provides a wealth of technological information that can be used to solve related problems. Manuscripts that address all fields of applications of acoustics ranging from medicine and NDT to the environment and buildings are welcome.