New applications for ultrasonic sensors in process industries.

abstract：:The focus of contrast-enhanced ultrasound research has developed beyond visualizing the blood pool and its flow to new areas such as perfusion imaging, drug and gene therapy, and targeted imaging. In this work comparison between the application of polymer- and phospholipid-shelled ultrasound contrast agents (UCAs) for...

journal_title：Ultrasonics

authors： Grishenkov D,Kari L,Brodin LK,Brismar TB,Paradossi G

更新日期：2011-01-01 00:00:00

abstract：:Ultrasonic modes guided along the surface of a concrete block covered by a composite plate are investigated. First of all, the propagation phenomenon is studied by predicting the dispersion curves for various modes supposed to exist in this structure. Then, focus is made on a specific mode expected to be sensitive to ...

journal_title：Ultrasonics

authors： Castaings M,Hosten B,François D

更新日期：2004-04-01 00:00:00

abstract：:The wear behaviors of grinding wheel have significant influence on the work-surface topography. However, a comprehensive and quantitative method is lacking for evaluating the wear conditions of grinding wheel. In this paper, a fractal analysis method is used to investigate the wear behavior of resin-bonded diamond whe...

journal_title：Ultrasonics

authors： Wang Q,Zhao W,Liang Z,Wang X,Zhou T,Wu Y,Jiao L

更新日期：2018-03-01 00:00:00

abstract：:When casting ceramic items in potteries, liquid 'slip' is passed from a settling tank, through overhead pipelines, before being pumped manually into the moulds. It is not uncommon for bubbles to be introduced into the slip as it passes through the complex piping network, and indeed the presence of bubbles is a major s...

journal_title：Ultrasonics

authors： Yim GT,Leighton TG

更新日期：2010-01-01 00:00:00

abstract：:The characterization of brain tissue is crucial to better understand neurological disorders. Mechanical characterization is an emerging tool in that field. The purpose of this work was to validate a transient ultrasound technique aimed at measuring dispersion of mechanical parameters of the brain tissue. The first par...

journal_title：Ultrasonics

authors： Nicolas E,Callé S,Nicolle S,Mitton D,Remenieras JP

更新日期：2018-03-01 00:00:00

abstract：:We develop a new ultrasonic imaging framework for non-destructive testing of an immersed specimen featuring an irregular top surface and demonstrate its capability of accurately depicting the lower surfaces of multiple damages hidden in the specimen. Central to the framework is a multistep angular spectrum approach (A...

journal_title：Ultrasonics

authors： Yang X,Wang K,Xu Y,Xu L,Hu W,Wang H,Su Z

更新日期：2020-12-01 00:00:00

abstract：:We have developed an ultrasonic array sensor useable for locating air leaks in manned spacecraft and have found that this sensor locates leaks in a 1-m(2) plate to within 2 cm. The sensor consists of a 63-element multiplexed array plus a reference element, all constructed from a single PZT disc and a printed circuit b...

journal_title：Ultrasonics

authors： Holland SD,Roberts R,Chimenti DE,Song JH

更新日期：2006-12-01 00:00:00

abstract：:Ultrasound (US) has been used in IMS II (intravascular US) and CLOTBUST (transcranial US) clinical trials for thrombolysis. During the treatment, in addition to the targeted thrombus, other biological components, such as blood and vessel walls are subjected to long durations of US exposure. In this study we explored e...

journal_title：Ultrasonics

authors： Soltani A,Singhal R,Garcia JL,Raju NR

更新日期：2007-03-01 00:00:00

abstract：:Geometrical and material property changes cause deviations in the resonant conditions used for noncollinear wave mixing. These deviations are predicted and observed using the SV(ω1)+L(ω2)→L(ω1+ω2) interaction, where SV and L are the shear vertical and longitudinal waves, respectively, and ω1, ω2 are their frequencies....

journal_title：Ultrasonics

authors： Demčenko A,Mainini L,Korneev VA

更新日期：2015-03-01 00:00:00

abstract：:Transducer is the necessary and most important part in the maxonics. New applications demand for new transducer, and the renovation of the transducer will open a new field for the application of the maxonics. The important method to develop new transducer is to find and develop new material. The rare earth giant magne...

journal_title：Ultrasonics

authors： Liu W,Zhou L,Xia T,Yu H

更新日期：2006-12-22 00:00:00

abstract：:The present study is focused on the development and characterization of an innovative substrate to optimize the axial resolution of ultrasonic transducers on a silicon substrate that is dedicated to ultrasound imaging. The substrate must efficiently dampen wave propagation to avoid degradation of the axial resolution ...

journal_title：Ultrasonics

authors： Lascaud J,Defforge T,Gautier G,Certon D

更新日期：2019-07-01 00:00:00

abstract：:Ultrasonic testing has been used for many decades, proving itself very efficient for detecting defects in many industrial sectors. The desire to apply ultrasonic testing to geometrically complex structures, and to anisotropic, inhomogeneous materials, together with the advent of more powerful electronics and software,...

journal_title：Ultrasonics

authors： Mineo C,Lines D,Cerniglia D

更新日期：2021-03-01 00:00:00

abstract：:Periodic composite ultrasonic transducers offer many advantages but the periodic pillar architecture can give rise to unwanted modes of vibration which interfere with the piston like motion of the fundamental thickness mode. In this paper, viscoelastic loss is incorporated into a three-dimensional plane wave expansion...

journal_title：Ultrasonics

authors： Orr LA,Mulholland AJ,O'Leary RL,Hayward G

更新日期：2008-12-01 00:00:00

abstract：:In this study, we found that microbubbles with diameters of less than 100μm can be easily generated by using a hollow cylindrical ultrasonic horn. Consecutive images of bubbles obtained by using high-speed and high-resolution cameras reveal that a capillary wave is formed on the gas-liquid interface under weak ultraso...

journal_title：Ultrasonics

authors： Makuta T,Suzuki R,Nakao T

更新日期：2013-01-01 00:00:00

abstract：:Surface acoustic wave (SAW) waveguide resonator is formed by a ring-shaped strip of copper 10 microm wide and approximately 130 microm in diameter embedded into a 0.8 microm thick layer of silica on a silicon wafer. SAWs are excited at one side of the copper ring by a short laser pulse focused into a spatially periodi...

journal_title：Ultrasonics

authors： Maznev AA

更新日期：2009-01-01 00:00:00

abstract：:This paper investigates the use of magnetically active materials in the matching layer of a piezoelectric transducer. This then allows the performance of the device to be dynamically altered by applying an external field. The effect that this new matching layer has on the performance of a typical device is theoretical...

journal_title：Ultrasonics

authors： Mulholland AJ,O'Leary RL,Ramadas N,Parr A,Troge A,Pethrick RA,Hayward G

更新日期：2007-12-01 00:00:00

abstract：:Local Defect Resonance (LDR) is exploited for non-destructive testing (NDT) by using ultrasonic vibrations to get a localized resonant activation of defected zones. The LDR technique relies on the local stiffness difference between the defect and the sound material. Analyzing the structure's displacement field at this...

journal_title：Ultrasonics

authors： Segers J,Hedayatrasa S,Poelman G,Van Paepegem W,Kersemans M

更新日期：2020-07-01 00:00:00

abstract：:Even though friction is one of the oldest problems in physics many aspects of friction processes are not clear today. We present an experimental setup, which permits the study of tribological systems by measuring the dissipated heat at the interface of two surfaces during a friction process with a time resolution of 1...

journal_title：Ultrasonics

authors： Schwaller P,Groning P,Schneuwly A,Boschung P,Muller E,Blanc M,Schlapbach L

更新日期：2000-03-01 00:00:00

abstract：:This will be a discussion of the non-invasive determination of the viscosity of a non-Newtonian fluid in laminar pipe flow over the range of shear rates present in the pipe. The procedure used requires knowledge of the flow profile in and the pressure drop along a long straight run of pipe. The profile is determined b...

journal_title：Ultrasonics

authors： Pfund DM,Greenwood MS,Bamberger JA,Pappas RA

更新日期：2006-12-22 00:00:00

abstract：:In acoustic and ultrasonic non-destructive testing techniques, it is sometimes beneficial to concentrate sound energy at a chosen location in space and at a specific instance in time, for example to improve the signal-to-noise ratio or activate the nonlinearity of damage features. Time Reversal (TR) techniques, taking...

journal_title：Ultrasonics

authors： Delrue S,Van Den Abeele K,Bou Matar O

更新日期：2016-04-01 00:00:00

abstract：:Acoustic scattering phenomena from complex immersed elastic shells are studied by high-speed Schlieren visualization for spark-generated spherical quasi-Dirac excitations. The situations considered are air-filled cylindrical shells under normal insonification and air-filled cylindrical shells soldered at one end with ...

journal_title：Ultrasonics

authors： Derbesse L,Pernod P,Latard V V,Merlen A,Decultot D,Touraine N,Maze G

更新日期：2000-03-01 00:00:00

abstract：:Broken wires often occur at multiple locations in the same wire of a strand due to the recovery length, which is defined as the length of the wire taking up its full share of the axial load from the break point. The detection of broken-wire flaws at multiple locations along the same wire is investigated using guided w...

journal_title：Ultrasonics

authors： Xu J,Wu X,Sun P

更新日期：2013-01-01 00:00:00

abstract：:For coupled structures surrounded by heavy fluids, it is difficult to obtain dispersion curves from an eigenvalue analysis, because the external fluid term in the coupled equation includes transcendental functions for frequency and wavenumber. Thus, in this study, the acoustic mass of the external fluid was approximat...

journal_title：Ultrasonics

authors： Jung BK,Ryue J,Hong C,Jeong WB,Shin KK

更新日期：2018-04-01 00:00:00

abstract：:In cancellous bone, longitudinal waves often separate into fast and slow waves depending on the alignment of bone trabeculae in the propagation path. This interesting phenomenon becomes an effective tool for the diagnosis of osteoporosis because wave propagation behavior depends on the bone structure. Since the fast w...

journal_title：Ultrasonics

authors： Nagatani Y,Mizuno K,Saeki T,Matsukawa M,Sakaguchi T,Hosoi H

更新日期：2008-11-01 00:00:00

abstract：:Aluminium sheet thickness has been calculated from ultrasonic data obtained using a send-receive, radially polarised electromagnetic acoustic transducer (EMAT). Sheets in the thickness range between 0.1 and 0.5 mm have been measured using this non-contact approach at a stand-off of up to 1.5 mm. Normal incidence shear...

journal_title：Ultrasonics

authors： Dixon S,Edwards C,Palmer SB

更新日期：2001-10-01 00:00:00

abstract：:We studied thickness-shear and thickness-twist vibrations of a monolithic, two-pole crystal filter made from a plate of AT-cut quartz. The scalar differential equations derived by Tiersten and Smythe for electroded and unelectroded quartz plates were employed which are valid for both the fundamental and the overtone m...

journal_title：Ultrasonics

authors： Zhao Z,Qian Z,Wang B,Yang J

更新日期：2015-04-01 00:00:00

abstract：:The therapeutic benefits of several existing ultrasound-based therapies such as facilitated drug delivery, tumor ablation and thrombolysis derive largely from physical or mechanical effects. In contrast, ultrasound can also trigger various time-dependent biochemical responses in the exposed biological milieu. Several ...

journal_title：Ultrasonics

authors： Paliwal S,Mitragotri S

更新日期：2008-08-01 00:00:00

abstract：:The frequency dependence of H2O2 generation from H2O by a sonochemical reaction was detected experimentally. The results are in good agreement with previous experimental results, which indicate that in sonochemical reactions, frequencies higher than 90 kHz are more effective than frequencies of several tens of kiloher...

journal_title：Ultrasonics

authors： Sato M,Itoh H,Fujii T

更新日期：2000-03-01 00:00:00

abstract：:In the present work a general model of the vibrational behavior of the axle of a piezoelectric motor is proposed. In this motor, a cylinder-shaped permanent magnet, which act as a rotor, is pressed in contact with an end of a steel axle by means of the magnetic forces. The other end of the axle is fitted at the center...

journal_title：Ultrasonics

authors： Iula A,Pappalardo M

更新日期：2004-04-01 00:00:00

abstract：:Laser ultrasonic is a most promising method for non-destructive evaluation of residual stress. The residual stress of thin steel plate is measured by laser ultrasonic technique. The pre-stress loading device is designed which can easily realize the condition of the specimen being laser ultrasonic tested at the same ti...

journal_title：Ultrasonics

authors： Zhan Y,Liu C,Kong X,Lin Z

更新日期：2017-01-01 00:00:00