A novel time-of-flight difference determination method for ultrasonic thickness measurement with ultrasonic echo onset point detection

IF 3.4 2区物理与天体物理 Q1 ACOUSTICS

Applied Acoustics Pub Date : 2025-02-18 DOI:10.1016/j.apacoust.2025.110605

Wangyu Liu , Dongxun Li , Weigui Xie

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引用次数: 0

Abstract

Determining the time-of-flight difference (TOFD) between adjacent echoes is essential for accurate ultrasonic thickness measurement. However, due to energy attenuation, time shift and frequency dispersion during the propagation process, the actual received ultrasonic signal will always have waveform changes and noise interference, and it is challenging to ensure satisfactory accuracy using traditional methods. Herein, A TOFD determination method based on ultrasonic echo onset point (UEOP) detection was proposed. The method combines the optimal main energy spectrum (ODES) and Akaike information criterion (AIC) to detect the UEOP of ultrasonic echo, and then determines the TOFD based on the UEOP of adjacent echoes. Numerical experiments were carried out to evaluate the detection performance of the proposed method under waveform change and different noise levels. Experimental validation of ultrasonic thickness measurement on aluminum alloy samples shows that the proposed method can obtain accurate thickness measurement results.

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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.