ISPRS International Journal of Geo-Information, 2015 Spectral Analysis of Surface Wave (SASW) is widely used in nondestructive subsurface profiling for geological sites. The air-coupled SASW is an extension from conventional SASW methods by replacing ground-mounted accelerometers with non-contact ...
Yifeng Lu +3 more
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Comparative Study of Coupling Techniques in Lamb Wave Testing of Metallic and Cementitious Plates
Sensors, 2019 Lamb waves have emerged as a valuable tool to examine long plate-like structures in a faster way compared to conventional bulk wave techniques, which make them attractive in non-destructive testing.
Santiago Vázquez +5 more
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Contactless Ultrasonic Wavefield Imaging to Visualize Near-Surface Damage in Concrete Elements
Applied Sciences, 2019 We present work to detect and visualize near-surface damage in concrete using contactless ultrasonic wavefield imaging technology. A fully contactless ultrasonic scanning system that utilizes a micro-electro-mechanical systems (MEMS) ultrasonic ...
Homin Song, John S. Popovics
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Two-way coupled meteorology and air quality models in Asia: a systematic review and meta-analysis of impacts of aerosol feedbacks on meteorology and air quality [PDF]
Atmospheric Chemistry and Physics, 2022 Atmospheric aerosols can exert an influence on meteorology and air quality through aerosol–radiation interaction (ARI) and aerosol–cloud interaction (ACI), and this two-way feedback has been studied by applying two-way coupled meteorology and air ...
C. Gao +9 more
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Experimental Evaluation of Three Designs of Electrodynamic Flexural Transducers
Sensors, 2016 Three designs for electrodynamic flexural transducers (EDFT) for air-coupled ultrasonics are presented and compared. An all-metal housing was used for robustness, which makes the designs more suitable for industrial applications.
Tobias J. R. Eriksson +5 more
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“Pipe organ” air-coupled broad bandwidth transducer [PDF]
2017 IEEE International Ultrasonics Symposium (IUS), 2017 Air-coupled transducers are used to conduct fast non-contact inspections in NDT. Normally, the bandwidth of a conventional transducer can be enhanced, but with a cost to its sensitivity. However, low sensitivity is very disadvantageous in air-coupled devices. This paper presents a methodology for improving the bandwidth of an air-coupled micro-machined
Zhu, B. +4 more
openaire +2 more sources
High-frequency air-coupled ultrasonic transducers
, 2021 High-frequency air-coupled ultrasonic ...
S.A. Abdullah (11152934)
core +1 more source
Air-Coupled Piezoelectric Transducers with Active Polypropylene Foam Matching Layers
Sensors, 2013 This work presents the design, construction and characterization of air-coupled piezoelectric transducers using 1–3 connectivity piezocomposite disks with a stack of matching layers being the outer one an active quarter wavelength layer made of ...
Tomás E. Gómez Alvarez-Arenas
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Air-coupled ultrasonic assessment of wood veneer
Physics Procedia, 2010 Air-coupled ultrasound (ACU) provides a tool to evaluate wood samples of small or moderate thickness (
Blomme, Erik +4 more
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Rapid Transient Control Strategies for Air-Coupled Ultrasonic Transducers
IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency ControlOptimizing the transient response of air-coupled ultrasonic transducers is essential for applications such as ultrasonic welding, non-destructive testing, acoustic levitation, and emerging fields like gas-phase sono-photonics, where fast activation and ...
Jan H. Dorsam +11 more
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