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Noncontact Damage Topography Reconstruction by Wavenumber Domain Analysis Based on Air-Coupled Ultrasound and Full-Field Laser Vibrometer
- Source :
- Sensors (Basel, Switzerland), Sensors, Vol 21, Iss 609, p 609 (2021), Sensors, Volume 21, Issue 2
- Publication Year :
- 2021
- Publisher :
- MDPI, 2021.
-
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.
- Subjects :
- Materials science
wavenumber domain analysis
air-coupled ultrasound
Acoustics
02 engineering and technology
lcsh:Chemical technology
01 natural sciences
Biochemistry
Edge detection
Article
Analytical Chemistry
Lamb waves
Lamb wave
0103 physical sciences
Dispersion (optics)
Wavenumber
lcsh:TP1-1185
Domain analysis
Electrical and Electronic Engineering
010301 acoustics
Instrumentation
business.industry
Ultrasound
021001 nanoscience & nanotechnology
Atomic and Molecular Physics, and Optics
damage evaluation
0210 nano-technology
business
Laser Doppler vibrometer
laser vibrometer
Excitation
Subjects
Details
- Language :
- English
- ISSN :
- 14248220
- Volume :
- 21
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Sensors (Basel, Switzerland)
- Accession number :
- edsair.doi.dedup.....5b2cf175a70226e84a60257977254001