Results 21 to 30 of about 141,866 (259)
Machine Learning-Enriched Lamb Wave Approaches for Automated Damage Detection
Sensors, 2020 Lamb wave approaches have been accepted as efficiently non-destructive evaluations in structural health monitoring for identifying damage in different states.
Zi Zhang +3 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
doaj +1 more source
Sensors, 2020 Lamb waves are used to locate any damage in the stator insulation structure of large generators. However, it is difficult to extract the features of Lamb wave signals in a strong background noise environment, thus significantly reducing the accuracy with
Ruihua Li, Jing Luo, Bo Hu
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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
core +1 more source
High-temperature high-sensitivity AlN-on-SOI Lamb wave resonant strain sensor
AIP Advances, 2018 A piezoelectric AlN-on-SOI structured MEMS Lamb wave resonator (LWR) is presented for high-temperature strain measurement. The LWR has a composite membrane of a 1 μm thick AlN film and a 30 μm thick device silicon layer.
Shaoxu Dou +8 more
doaj +1 more source
Wireless actuation of bulk acoustic modes in micromechanical resonators [PDF]
, 2016 We report wireless actuation of a Lamb wave micromechanical resonator from a distance of over 1 m with an efficiency of over 15%. Wireless actuation of conventional micromechanical resonators can have broad impact in a number of applications from ...
Brown, Benjamin +3 more
core +1 more source
Shock and Vibration, 2017 Lamb waves have shown promising advantages for damage identification in thin-walled structures. Multiple modes of Lamb wave provide diverse sensitivities to different types of damage.
Zijian Wang, Pizhong Qiao, Binkai Shi
doaj +1 more source
Three-dimensional edge waves in plates [PDF]
, 2007 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.
Kaplunov, JD, Zernov, V
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Air-coupled, focused ultrasonic dispersion spectrum reconstruction in plates [PDF]
, 2004 This paper presents and demonstrates a noncontact method for measuring the Lamb wave dispersion spectrum of a plate. Noncontact air-coupled source and receive transducers are used with line-focus mirrors and 50–700 kHz broadband apparatus for ...
Chimenti D. E. +11 more
core +3 more sources
Lamb Wave Directional Sensing with Piezoelectric Fiber Rosette in Structure Health Monitoring
Shock and Vibration, 2019 Directional piezoelectric sensors can detect the Lamb wave propagation direction to locate damage in structural health monitoring (SHM). The directivity of the round piezoelectric fiber is exploited with a 0°/45°/90° rosette configuration to acquire ...
Songlai Wang +4 more
doaj +1 more source