Propagation and Attenuation Characteristics of an Ultrasonic Beam in Dissimilar-Metal Welds
Sensors, 2020 Ultrasonic inspection of welds joining dissimilar metals in nuclear power plants has proven to be a challenge, because the ultrasonic waves are subject to diffraction, distortion, scattering, and noise.
Young-In Hwang +5 more
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Sensors, 2018 The accumulation of fouling within a structure is a well-known and costly problem across many industries. The build-up is dependent on the environmental conditions surrounding the fouled structure.
Habiba Lais +4 more
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Effect of ultrasound waves against infection with giardiasis in Rattus norvegicus rats. [PDF]
مجلة التربية والعلم, 2018 The present study investigated the effect of the direct ultrasonic waves, as an immune stimulator, against infection with giardiasis caused by Giardia lamblia in Norwegian rat, Rattus norvegicus. The pathological changes occurred in the rats administered
Asmaa Ali, Hiba Khudher
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MODELLING OF EXTRINSIC FIBER OPTIC SAGNAC ULTRASOUND INTERFEROMETER USED FOR DISPLACEMENT MEASUREMENTS [PDF]
Journal of Fundamental and Applied Sciences, 2012 Ultrasonic waves are used extensively in nondestructive testing both for characterization of material properties, in this paper, we describe a fiber optic sensor suitable for detection of ultrasonic waves. This sensor is based on an extrinsic fiber optic
S. BENHAMIDA, F. Rehouma
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Detection of cracks in metal sheets using pulsed laser generated ultrasound and EMAT detection [PDF]
, 2011 A pulsed Nd: YAG laser with an approximately Gaussian beam shape is directed onto the surface of an aluminium sheet at an energy density below which damage by laser ablation occurs, generating Lamb waves in the sheet.
Dixon, S. +3 more
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Modelling of particle paths passing through an ultrasonic standing wave [PDF]
, 2004 Within an ultrasonic standing wave particles experience acoustic radiation forces causing agglomeration at the nodal planes of the wave. The technique can be used to agglomerate, suspend, or manipulate particles within a flow.
Hill, M. +3 more
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Feasibility Analysis on the Use of Ultrasonic Communications for Body Sensor Networks
Sensors, 2018 Ultrasonic waves have good propagation in the human body and have been widely applied in biomedical device design without any reported side effects. Therefore, ultrasonic waves can provide an alternative method as an information carrier for body sensor ...
Meina Li, Youn Tae Kim
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Defect feature extraction using surface wave interactions and time-frequency behavior [PDF]
, 2010 In this paper we exploit the interaction of ultrasonic surface waves with surface cracks in order to extract defect characteristics. An experimentally validated computer model was developed to simulate laser generated surface waves interacting with ...
Edwards, R. S. (Rachel S.) +7 more
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Direct measurement of ultrasonic activity on microbial metabolism and analysis of related uncertainty [PDF]
, 2013 The scope of this work is to identify the relation that exists between the alterations of the bacterial metabolism and the exposition to an ultrasonic field (O'Leary et al. 1997, Piyasena et al. 2003, Brujan2004).
Erriu, Matteo
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Applied SciencesIn this paper, we present an original ultrasonic technique to investigate and discriminate between different kinds of pork meat, i.e., hand-deboned (HD) meat and mechanically separated (MSM) meat. To this end, we measured the speed c of high-frequency f =
Piotr Kiełczyński +4 more
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