Results 11 to 20 of about 45,052 (312)
Ultrasonic sensing using Yb3+/Er3+-codoped distributed feedback fibre grating lasers. [PDF]
, 2005 Yb3+/Er3+-codoped distributed feedback (YbEr-DFB) fibre grating lasers have been investigated for the detection of ultrasonic Lamb waves generated in an aluminum plate. Two sensor configurations have been investigated. A path length imbalanced readout
Ye, Chen-Chun, Tatam, Ralph P.
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An Estimation of Wave Attenuation Factor in Ultrasonic Assisted Gravity Drainage Process [PDF]
Iranian Journal of Oil & Gas Science and Technology, 2014 It has been proved that ultrasonic energy can considerably increase the amount of oil recovery in an immiscible displacement process. Although many studies have been performed on investigating the roles of ultrasonic waves, based on the best of our ...
Behnam Keshavarzi +3 more
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A silicon microfluidic ultrasonic separator [PDF]
, 2002 Ultrasonic standing waves can be used to generate forces on particles within a fluid. Such forces have a number of potential applications in microfluidic devices. This paper describes such a device providing filtration on a microfluidic scale.
Beeby, S. +7 more
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Notulae Scientia Biologicae, 2012 In this research, internal cracks and collapse of wood, formed during drying process, were measured using ultrasonic inspection. For this purpose, seven poplar (Populus nigra) small blocks were dried, according to a time-based schedule. Ultrasonic waves
Saeid ESHAGHI +2 more
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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 ...
Keith Worden +13 more
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A noncontact ultrasonic platform for structural inspection [PDF]
, 2011 Miniature robotic vehicles are receiving increasing attention for use in nondestructive testing (NDE) due to their attractiveness in terms of cost, safety, and their accessibility to areas where manual inspection is not practical. Conventional ultrasonic
Summan, Rahul +9 more
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Ultrasonic Rayleigh wave enhancements from angled defects in aluminium [PDF]
, 2011 Non-linear enhancements of ultrasonic surface wave amplitude and frequency have been observed when an incident wave interacts with a surface defect.
Edwards, R. S. (Rachel S.) +7 more
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Nuclear Engineering and Technology, 2021 Ultrasonic nondestructive testing is important for monitoring the structural integrity of dissimilar metal welds (DMWs) in pressure vessels and piping in nuclear power plants.
Munsung Kim +6 more
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Ultrasonic metal sheet thickness measurement without prior wave speed calibration [PDF]
, 2013 Conventional ultrasonic mensuration of sample thickness from one side only requires the bulk wave reverberation time and a calibration speed. This speed changes with temperature, stress, and microstructure, limiting thickness measurement accuracy ...
Dixon, S. +4 more
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Using ultrasonic as a new approach for elimination of inorganic scales (NaCl): an experimental study
Journal of Petroleum Exploration and Production Technology, 2017 Because inorganic scales reduce permeability near wellbores, they cause an additional pressure drop in this region (skin damage) and reduce production. NaCl precipitation, particularly in gas-producing wells, is one of the formation damage problems which
Jaber Taheri-Shakib +4 more
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