Research on Dry Coupling Technology in the Ultrasonic Non-Destructive Testing of Concrete

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Veröffentlicht in:Micromachines vol. 16, no. 1 (2025), p. 72
1. Verfasser: Li, Jun
Weitere Verfasser: Chen, Zeyu
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MDPI AG
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024 7 |a 10.3390/mi16010072  |2 doi 
035 |a 3159553706 
045 2 |b d20250101  |b d20251231 
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100 1 |a Li, Jun  |u College of Mechanical & Electrical Engineering, Central South University, Changsha 410083, China; <email>lijun202501@163.com</email>; China Railway 11th Bureau Group Co., Ltd., Wuhan 272199, China 
245 1 |a Research on Dry Coupling Technology in the Ultrasonic Non-Destructive Testing of Concrete 
260 |b MDPI AG  |c 2025 
513 |a Journal Article 
520 3 |a In the health monitoring and safety assessments of concrete structures, ultrasonic non-destructive testing (NDT) technology has become an indispensable tool due to its non-destructive nature, efficiency, and precision. However, when used in inspecting irregular concrete surfaces, traditional planar ultrasonic transducers often encounter energy loss and signal attenuation induced by poor interface coupling, which significantly reduces the accuracy and reliability of the test results. To address this problem, this article proposes a point-contact dry coupling ultrasonic transducer solution, which enables efficient acquisition of ultrasonic signals within concrete without the need for couplants. By combining an array imaging system with a total focusing algorithm, this study not only significantly enhances the convenience and signal-to-noise ratio (SNR) of concrete ultrasonic imaging, but also opens new pathways for ultrasonic NDT technology in concrete. 
653 |a Simulation 
653 |a Accuracy 
653 |a Transducers 
653 |a Nondestructive testing 
653 |a Ultrasonic transducers 
653 |a Concrete 
653 |a Concrete structures 
653 |a Signal processing 
653 |a Algorithms 
653 |a Boundary conditions 
653 |a Couplants 
653 |a Ultrasonic attenuation 
653 |a Vibration 
653 |a Efficiency 
653 |a Signal to noise ratio 
653 |a Coupling 
700 1 |a Chen, Zeyu  |u College of Mechanical & Electrical Engineering, Central South University, Changsha 410083, China; <email>lijun202501@163.com</email> 
773 0 |t Micromachines  |g vol. 16, no. 1 (2025), p. 72 
786 0 |d ProQuest  |t Engineering Database 
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856 4 0 |3 Full Text + Graphics  |u https://www.proquest.com/docview/3159553706/fulltextwithgraphics/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch 
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