Results 21 to 30 of about 6,744 (161)
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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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
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Subsonic Lamb waves in anisotropic plates [PDF]
Quarterly of Applied Mathematics, 2002 A six-dimensional complex formalism for analysis of Lamb waves propagating with subsonic speed in anisotropic plates is formulated. Conditions for nonexistence of certain Lamb waves in anisotropic plates are obtained. An example of a transversely isotropic plate having “forbidden” speed at which no subsonic Lamb wave propagates is presented.
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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
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Global Winds Shape Planetary‐Scale Lamb Waves
Geophysical Research Letters, 2023 In 2022, the Hunga volcano eruption in Tonga generated atmospheric pressure waves that propagated globally and produced tsunamis in all the world's oceans.
Ignacio Sepúlveda +2 more
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A self-assembled metamaterial for Lamb waves [PDF]
Applied Physics Letters, 2015 We report the design and characterization of a self-assembled, locally resonant acoustic metamaterial for Lamb waves, composed of a monolayer of 1.02 μm polystyrene microspheres adhered to a 1.27 μm thick free-standing silicon membrane. A laser-induced transient grating technique is used to generate Lamb waves in the metamaterial and to measure its ...
Khanolkar, A. +5 more
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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
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Detection of coatings within liquid-filled tubes and containers by mode conversion of leaky Lamb waves [PDF]
Journal of Sensors and Sensor Systems, 2013 In this paper, a new acoustic sensor principle for coating detection within liquid-filled tubes and containers based on mode conversion of leaky Lamb waves is introduced.
M. Schmitt +6 more
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Sensors, 2018 Peridynamic based elastodynamic computation tool named Peri-elastodynamics is proposed herein to simulate the three-dimensional (3D) Lamb wave modes in materials for the first time.
Subir Patra +2 more
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Modes Control of Lamb Wave in Plates Using Meander-Line Electromagnetic Acoustic Transducers
Applied Sciences, 2020 The multimode and dispersion characteristics of Lamb waves make them difficult to apply to nondestructive evaluation. This paper presents a paired configuration of a meander-line coil electromagnetic acoustic transducer (EMAT) to generate a single-mode ...
Yinghong Zhang, Zhenghua Qian, Bin Wang
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