Results 11 to 20 of about 99,487 (264)
Sensors, 2022 This article proposes an electromagnetic acoustic transducer (EMAT) for selectively improving the purity and amplitude of ultrasonic Lamb waves in non-ferromagnetic plates. The developed EMAT consists of a racetrack coil and a group of periodic permanent
Xinfeng Guo +3 more
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Applied Sciences, 2022 The Lamb waves are named one of the promising solutions for future wind turbine blade (WTB) failure prevention. The compliance with safety assurance of WTBs by detecting structural changes during the manufacture and performing their monitoring during the
Lina Draudvilienė +5 more
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Atmosphere, 2022 The Tonga volcano erupted on 15 January 2022, at 04:15:45 UTC, which significantly influenced the atmosphere and space environment, at the same time, an unprecedented opportunity to monitor ionospheric anomalies is provided by its powerful eruption.
Qiaoli Kong +7 more
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Focusing higher-order Lamb waves based on the Luneburg lens
Frontiers in Physics, 2023 In order to improve the spatial resolution and the signal-to-noise ratio of Lamb waves in structural health monitoring systems or non-destructive testing techniques, this study presents the construction of Luneburg lenses for focusing higher-order Lamb ...
Tianming Ye +7 more
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Impact of Wedge Parameters on Ultrasonic Lamb Wave Liquid-Level Sensor
Sensors, 2022 The ultrasonic Lamb wave detection principle can realize the noncontact measurement of liquid level in closed containers. When designing an ultrasonic Lamb wave sensor, it is vital to thoroughly study and select the optimal wedge size at the front of the
Weizhao Xue +4 more
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Characterization of defects in plates using shear and Lamb waves [PDF]
, 2017 This work investigates the interaction of shear and Lamb waves with different kinds of defects in plates, in view of applications to defect characterization purposes. Using a finite element model, the reflection and transmission coefficients of shear and
Achillopoulou, Dimitra, Pau, Annamaria
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Application of non-contact ultrasonic method in air to study fiber-cement corrugated boards [PDF]
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2021 The fiber-cement and cellulose boards are materials commonly used in architectural engineering for exterior and interior applications such as building facades or as wall and roof covering materials.
Radosław Drelich +2 more
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Detecting Lamb waves with broad-band acousto-ultrasonic signals in composite structures [PDF]
, 1992 Lamb waves can be produced and detected in ceramic matrix composites (CMC) and metal matrix composites (MMC) plates using the acousto-ultrasonic configuration employing broadband transducers.
Kautz, Harold E.
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Lamb wave near field enhancements for surface breaking defects in plates [PDF]
, 2012 Near field surface wave ultrasonic enhancements have previously been used to detect surface breaking defects in thick samples using Rayleigh waves. Here, we present analogous surface wave enhancements for Lamb waves propagating in plates.
Clough, A. R. +1 more
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Sensors, 2017 Guided waves in plate-like structures have been widely investigated for structural health monitoring. Lamb waves and shear horizontal (SH) waves, two commonly used types of waves in plates, provide different benefits for the detection of various types of
Baiyang Ren +2 more
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