Results 11 to 20 of about 737,665 (254)
Three-dimensional edge waves in plates [PDF]
, 2008 This paper describes the propagation of three-dimensional symmetric waves localized near the traction-free edge of a semi-infinite elastic plate with either traction-free or fixed faces.
Zernov, V, Kaplunov, JD
core +6 more sources
Simulation of ultrasonic lamb wave generation, propagation and detection for an air coupled robotic scanner [PDF]
, 2011 A computer simulator, to facilitate the design and assessment of a reconfigurable, air-coupled ultrasonic scanner is described and evaluated. The specific scanning system comprises a team of remote sensing agents, in the form of miniature robotic ...
Spencer, Andrew +6 more
core +4 more sources
A Lamb wave lens for acoustic microscopy [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1992 In a conventional scanning acoustic microscope the excited leaky modes contribute significantly to the high contrast obtained in the images. However, all such modes exist simultaneously, and the interpretation of the images is not straightforward, especially in layered media.
Atalar, A., Koymen H., Degertekin F.L.
openaire +4 more sources
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Multiple reflections of Lamb waves at a delamination [PDF]
Ultrasonics, 2002 Wave propagation in laminated plates with delaminations was calculated using the semi-analytical finite element method. The visualization results and deeper numerical analyses revealed the following phenomena on the fundamental Lamb modes at delamination regions of laminated plates.
Hayashi, Takahiro, Kawashima, Koichiro
openaire +4 more sources
Mechanical Engineering Journal, 2014 The bonding quality of an adhesive component was estimated using the frequency of zero-group-velocity (ZGV) Lamb waves, which can be generated and detected with a laser ultrasonic technique.
Hideo CHO, Yudai YAGUCHI, Hiroaki ITO
doaj +1 more source