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Volume 21
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10.3390/s21020609
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Article

Noncontact Damage Topography Reconstruction by Wavenumber Domain Analysis Based on Air-Coupled Ultrasound and Full-Field Laser Vibrometer

by
Hui Zhang
,
Dongmei Liang
,
Xiaobo Rui
* and
Zhuochen Wang
State Key Laboratory of Precision Measurement Technology and Instrument, Tianjin University, Tianjin 300072, China
*
Author to whom correspondence should be addressed.
Sensors 2021, 21(2), 609; https://doi.org/10.3390/s21020609
Submission received: 2 December 2020 / Revised: 13 January 2021 / Accepted: 14 January 2021 / Published: 17 January 2021
(This article belongs to the Section Sensing and Imaging)
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Abstract

Noncontact ultrasonic detection technology is an effective method to detect damage in time. This paper proposes a noncontact damage detection system based on air-coupled ultrasound and full-field laser vibrometer, which realizes the excitation of relatively single-mode guided waves and the wavefield automatic detection. The system performance is verified through experiments, and the experimental wavenumber is consistent with the theoretical dispersion characteristics of the Lamb wave in the A0 mode. Based on this system, the topography reconstruction algorithms, including the Wavenumber Filtering Algorithm and Spatial Wavenumber Algorithm, were tested and compared with the aluminum alloy plate and the carbon fiber reinforced polymer plate. The results show that, based on the air-coupled ultrasound and full-field laser vibrometer detection system, the Spatial Wavenumber Algorithm has better imaging error and contrast, and the damage edge detection is smoother.
Keywords: damage evaluation; air-coupled ultrasound; Lamb wave; laser vibrometer; wavenumber domain analysis damage evaluation; air-coupled ultrasound; Lamb wave; laser vibrometer; wavenumber domain analysis

Share and Cite

MDPI and ACS Style

Zhang, H.; Liang, D.; Rui, X.; Wang, Z. Noncontact Damage Topography Reconstruction by Wavenumber Domain Analysis Based on Air-Coupled Ultrasound and Full-Field Laser Vibrometer. Sensors 2021, 21, 609. https://doi.org/10.3390/s21020609

AMA Style

Zhang H, Liang D, Rui X, Wang Z. Noncontact Damage Topography Reconstruction by Wavenumber Domain Analysis Based on Air-Coupled Ultrasound and Full-Field Laser Vibrometer. Sensors. 2021; 21(2):609. https://doi.org/10.3390/s21020609

Chicago/Turabian Style

Zhang, Hui, Dongmei Liang, Xiaobo Rui, and Zhuochen Wang. 2021. "Noncontact Damage Topography Reconstruction by Wavenumber Domain Analysis Based on Air-Coupled Ultrasound and Full-Field Laser Vibrometer" Sensors 21, no. 2: 609. https://doi.org/10.3390/s21020609

APA Style

Zhang, H., Liang, D., Rui, X., & Wang, Z. (2021). Noncontact Damage Topography Reconstruction by Wavenumber Domain Analysis Based on Air-Coupled Ultrasound and Full-Field Laser Vibrometer. Sensors, 21(2), 609. https://doi.org/10.3390/s21020609

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