Results 31 to 40 of about 10,739 (209)
Sensors, 2023 Most imaging methods based on ultrasonic Lamb waves in structural health monitoring requires reference signals, recorded in the intact state. This paper focuses on a novel baseline-free method for damage localization using Lamb waves based on a ...
Jichao Xu +3 more
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Experimental investigation of inter-element isolation in a medical array transducer at various manufacturing stages [PDF]
, 2016 This work presents the experimental investigation of vibration maps of a linear array transducer with 192 piezoelements by means of a laser Doppler vibrometer at various manufacturing finishing steps in air and in water.
Bini, Fabiano +2 more
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Sensors, 2017 Conventional contact sensors used for Lamb wave-based ultrasonic inspection, such as piezo-electric transducers, measure omnidirectional strain and do not allow distinguishing between fundamental symmetric and anti-symmetric modes. In this paper, we show
Ben De Pauw +5 more
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Acoustofluidics 17: theory and applications of surface acoustic wave devices for particle manipulation [PDF]
, 2012 In this paper, number 17 of the thematic tutorial series “Acoustofluidics – exploiting ultrasonic standing waves, forces and acoustic streaming in microfluidic systems for cell and particle manipulation” – we present the theory of surface acoustic waves (
Gedge, Michael, Hill, Martyn
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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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Sensors, 2023 Damage detection and localization based on ultrasonic guided waves revealed to be promising for structural health monitoring and nondestructive testing.
Cedric Bertolt Nzouatchoua +6 more
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AIP Advances, 2020 The generation of second- and third-order combined harmonics induced by the interaction of two primary Lamb waves with different frequencies has been analyzed theoretically and observed experimentally in our previous research [W. Li et al., J. Appl. Phys.
Weibin Li, Yaru Xu, Ning Hu, Mingxi Deng
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Air-Coupled Excitation of a Slow A0 Mode Wave in Thin Plastic Films by an Ultrasonic PMN-32%PT Array
Sensors, 2018 Ultrasonic non-destructive testing techniques (NDT) based on the application of guided waves are already used for inspection of plate-type structures made of various materials, including composite materials.
Rymantas J. Kazys +3 more
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Research on Fatigue Damage in High-Strength Steel (FV520B) Using Nonlinear Ultrasonic Testing
Shock and Vibration, 2020 In view of the early fatigue damage of high-strength steel FV520B, a nonlinear ultrasonic detection was performed on two types of fatigue samples using nonlinear Lamb waves.
Bingbing Chen +4 more
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Scanning laser techniques for characterisation of different surface breaking defect geometries [PDF]
, 2012 Measurements using a laser scanning system consisting of a pulsed Nd:YAG laser to generate surface ultrasonic waves and an interferometer to detect the surface displacement, are presented for different samples and defect geometries.
Clough, A. R. +4 more
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