Characterization of mechanical and geometrical properties of a tube with axial and circumferential guided waves.

abstract：:In order to guide the needle to the correct location in 3D US-guided brachytherapy, the needle is continuously tracked as it is being inserted. A pre-scan before the needle insertion and a post-scan after the needle insertion are subtracted to obtain a difference image containing the needle. The image is projected alo...

journal_title：Ultrasonics

authors： Ding M,Wei Z,Gardi L,Downey DB,Fenster A

更新日期：2006-12-22 00:00:00

abstract：:B-Scan images have been used as a means of detecting the onset of cavitation in tissues. New echoes appearing during simultaneous sonication with therapeutic ultrasound have often been attributed to bubble formation. In this study temperature rises up to 15 degrees C W-1 cm2 in guinea pig leg (post-mortem) were found,...

journal_title：Ultrasonics

authors： Watmough DJ,Davies HM,Quan KM,Wytch R,Williams AR

更新日期：1991-07-01 00:00:00

abstract：:Sonoelectrochemistry is undergoing a reemerging activity in the last years with an increasing number of papers appearing in a wide range of peer review journals. Applied studies which cover environmental treatments, synthesis or characterization of nanostructures, polymeric materials synthesis, analytical procedures, ...

journal_title：Ultrasonics

authors： González-García J,Esclapez MD,Bonete P,Hernández YV,Garretón LG,Sáez V

更新日期：2010-02-01 00:00:00

abstract：:This paper deals with the analysis of the guided evanescent waves in stopbands of a 1D phononic crystal (PC). A new numerical implementation is shown in order to get the complex values of the wavenumbers in a frequency range where a gap occurs. The considered phononic system is an aluminum plate with a one-dimensional...

journal_title：Ultrasonics

authors： Bavencoffe M,Morvan B,Hladky-Hennion AC,Izbicki JL

更新日期：2013-02-01 00:00:00

abstract：:This paper presents a novel linear piezoelectric motor which is suitable for rapid ultra-precision positioning. The finite element analysis (FEA) was applied for optimal design and further analysis, then experiments were conducted to investigate its performance. By changing the input signal, the proposed motor was fou...

journal_title：Ultrasonics

authors： Zhu C,Chu X,Yuan S,Zhong Z,Zhao Y,Gao S

更新日期：2016-12-01 00:00:00

abstract：:In this work, the existence of the optimal working frequency for ultrasonic motors (USMs) is theoretically and experimentally verified for the first time, at which working point the power dissipation of the motors arrives at its minimum value. The mathematical model of the mechanical quality factor is initially deduce...

journal_title：Ultrasonics

authors： Shi W,Zhao H,Ma J,Yao Y

更新日期：2016-08-01 00:00:00

abstract：:This paper presents a method which combines electromagnetic simulation and ultrasonic simulation to build EMAT array models. For a specific sensor configuration, Lorentz forces are calculated using the finite element method (FEM), which then can feed through to ultrasonic simulations. The propagation of ultrasound wav...

journal_title：Ultrasonics

authors： Xie Y,Yin W,Liu Z,Peyton A

更新日期：2016-03-01 00:00:00

abstract：:In this paper, the development of modified beamforming methods, Filtered Delay Weight Multiply and Sum (F-DwMAS) and Filtered Delay Euclidian-Weighted Multiply and Sum (F-DewMAS), are reported. These methods were investigated on a minimum-redundancy synthetic aperture technique, called as 2 element Receive Synthetic A...

journal_title：Ultrasonics

authors： Vayyeti A,Thittai AK

更新日期：2021-02-01 00:00:00

abstract：:A method for fabricating disposable membrane hydrophones is presented. The disposable hydrophones are intended for onetime use in such damaging environments as chemically contaminating fluids and high-amplitude (peak amplitude ∼100MPa) shock wave fields, where the use of commercial membrane hydrophones is not recommen...

journal_title：Ultrasonics

authors： Lee JW,Ohm WS,Kim YT

更新日期：2017-11-01 00:00:00

abstract：:The location of continuous acoustic emission sources is a difficult problem of non-destructive testing. This article describes one-dimensional location of continuous acoustic emission sources by using an intelligent locator. The intelligent locator solves a location problem based on learning from examples. To verify w...

journal_title：Ultrasonics

authors： Kosel T,Grabec I I,Muzic P

更新日期：2000-03-01 00:00:00

abstract：:Over the last two decades, more efficient transducers were developed for the generation and reception of air-borne ultrasound, thus enabling the non-contact, non-contaminating inspection of composite laminates and honeycomb structures widely used in the aerospace industry. This paper presents the fundamentals of makin...

journal_title：Ultrasonics

authors： Hsu DK

更新日期：2006-12-22 00:00:00

abstract：:The paper presents an equivalent circuit model of the polymer coated surface acoustic wave (SAW) resonators by combining coupling-of-mode (COM) description of SAW resonators and perturbation calculation of SAW propagation under polymer loading. An expression for the motional load produced by polymer coating is deduced...

journal_title：Ultrasonics

authors： Kshetrimayum R,Yadava RD,Tandon RP

更新日期：2011-07-01 00:00:00

abstract：:The digital ultrasonic fixed path interferometer designed for testing small amounts of sample was used for the investigation of whole blood coagulation, retraction and clot melting processes. The ultrasound velocity and absorption are determined from the characteristics of an acoustic resonator consisting of an emitte...

journal_title：Ultrasonics

authors： Grybauskas P,Kundrotas K,Sukackas V,Yaronis E

更新日期：1978-01-01 00:00:00

abstract：:Use of in-fiber Fabry-Perot (FP) filters based on fiber Bragg gratings as both sensor as well as an interrogator for enhancing the detection limit of elastic wave sensing is investigated in this paper. The sensitivity of such a demodulation scheme depends on the spectral discrimination of the sensor and interrogator g...

journal_title：Ultrasonics

authors： Harish AV,Varghese B,Rao B,Balasubramaniam K,Srinivasan B

更新日期：2015-07-01 00:00:00

abstract：:One of the important issues in the field of ultrasound medical imaging using contrast agents is the development of techniques able to separate the response of the contrast media from that of the biological tissues. In the literature, one can find various solutions involving the use of multiple transmitted signals and ...

journal_title：Ultrasonics

authors： Crocco M,Palmese M,Sciallero C,Trucco A

更新日期：2009-01-01 00:00:00

abstract：:The aim of this work is to investigate the absolute phase information in resonance acoustic scattering by spheres and cylinders and place this work in the broader context of scattering in which the properties of the magnitude and (processed) phase have been examined in a more general way than in the classical resonanc...

journal_title：Ultrasonics

authors： Mitri FG,Greenleaf JF,Fellah ZE,Fatemi M

更新日期：2008-07-01 00:00:00

abstract：:Ultrasound evaluation permits the state of rocks to be determined quickly and cheaply, satisfying the demands faced by today's producers of ornamental stone, such as environmental sustainability, durability and safety of use. The basic objective of the present work is to analyse and develop the usefulness of ultrasoun...

journal_title：Ultrasonics

authors： Cerrillo C,Jiménez A,Rufo M,Paniagua J,Pachón FT

更新日期：2014-01-01 00:00:00

abstract：:As biotechnology develops, techniques for manipulating and separating small particles such as cells and DNA are required in the life sciences. This paper investigates on-chip manipulation of microparticles in small channels by using ultrasonic vibration. The chip consists of a rectangular glass substrate with a cross-...

journal_title：Ultrasonics

authors： Yamamoto R,Koyama D,Matsukawa M

更新日期：2017-08-01 00:00:00

abstract：:In this newly developed method, the ultrasonic diagnosis has become quantitative. The data will remain quantitative so far as an image storage tube is used. With the conventional storage type CRT, it is impossible to memorize the reflected echo signals of different strength levels. But with our method, it becomes poss...

journal_title：Ultrasonics

authors： Yokoi H,Tatsumi T,Ito K

更新日期：1975-09-01 00:00:00

abstract：:Discovery and evaluation concerns of barely visible impact damage in composite materials is a well-known issue in industries using these materials. This work proposes a frequency sweep method where damage assessment is conducted with respect to the time domain. Firstly, a combined linear and nonlinear ultrasound imagi...

journal_title：Ultrasonics

authors： Malfense Fierro GP,Meo M

更新日期：2019-03-01 00:00:00

abstract：:Many sparse signal representation (SSR) algorithms have been developed in the past decade. The advantages of SSR such as compact representations and super resolution lead to the state of the art performance of SSR for processing ultrasonic non-destructive evaluation (NDE) signals. Choosing a suitable SSR algorithm and...

journal_title：Ultrasonics

authors： Zhang GM,Zhang CZ,Harvey DM

更新日期：2012-03-01 00:00:00

abstract：:In a recent report [F.G. Mitri, Z.E.A. Fellah, Ultrasonics 51 (2011) 719-724], it has been found that the instantaneous axial force (i.e. acting along the axis of wave propagation) of a Bessel acoustic beam centered on a sphere is only determined for the fundamental order (i.e. m=0) but vanishes when the beam is of vo...

journal_title：Ultrasonics

authors： Mitri FG,Fellah ZE

更新日期：2012-01-01 00:00:00

abstract：:The properties of optical to acoustic transduction of semiconductor superlattices have been explored for several years in the sub terahertz frequency range. Using femtosecond laser pulses focused on these structures, acoustic modes are excited with a frequency related to the periodicity of the structure stacking. We h...

journal_title：Ultrasonics

authors： Huynh A,Perrin B,Lemaître A

更新日期：2015-02-01 00:00:00

abstract：:The Arg-Gly-Asp (RGD) peptide sequence was conjugated to poly (lactid acid), (PLA), microcapsules. These hollow, biodegradable PLGA microcapsules were developed in our laboratory for use as ultrasound contrast agents. By modifying the surface of the agent with a targeting ligand, it can be targeted to a specific addre...

journal_title：Ultrasonics

authors： Lathia JD,Leodore L,Wheatley MA

更新日期：2004-04-01 00:00:00

abstract：:The motivation for this research stems from a need for providing a non-destructive testing method capable of detecting and locating any defects and microstructural variations within armour ceramic components before issuing them to the soldiers who rely on them for their survival. The development of an automated ultras...

journal_title：Ultrasonics

authors： Kesharaju M,Nagarajah R

更新日期：2015-09-01 00:00:00

abstract：:Based on the original combination of picosecond acoustics and diamond anvils cell, recent improvements to accurately measure hypersonic sound velocities of liquids and solids under extreme conditions are described. To illustrate the capability of this technique, results are given on the pressure and temperature depend...

journal_title：Ultrasonics

authors： Decremps F,Gauthier M,Ayrinhac S,Bove L,Belliard L,Perrin B,Morand M,Le Marchand G,Bergame F,Philippe J

更新日期：2015-02-01 00:00:00

abstract：:Essential to (cardiac) 3D ultrasound are 2D matrix array transducer technology and the associated (two-stage) beam forming. Given the large number of degrees of freedom and the complexity of this problem, simulation tools play an important role. Hereto, the impulse response (IR) method is commonly used. Unfortunately,...

journal_title：Ultrasonics

authors： Ortega A,Tong L,D'hooge J

更新日期：2014-04-01 00:00:00

abstract：:The Mössbauer and X-rays analysis of as-received Fe-powder and Fe-powder mechanically alloyed with C using high power ultrasonics were carried out. The powder blend of Fe-powder and graphite was processed in He environment during 5 to 50 h. The dissolution of carbon in iron particles and inhomogeneous distribution of ...

journal_title：Ultrasonics

authors： Nadutov VM,Mordyuk BN,Prokopenko GI,Gavrilenko IS

更新日期：2004-04-01 00:00:00

abstract：:This work was devoted to the development of a health monitoring system assigned to aerospace applications. Those applications concerned the detection of damaging impacts and debonding between stiffeners and composite skins, since they are the major causes of in-service damage of aircraft structures. The chosen health ...

journal_title：Ultrasonics

authors： Grondel S,Assaad J,Delebarre C,Moulin E

更新日期：2004-04-01 00:00:00

abstract：:The present study focuses on a possibility for improving NO removal efficiency from flue gas by application of powerful sound waves. The sound waves (frequency 6.9-17.2kHz, intensity 144-160dB) are propagated from Hartmann sound generators to a preheated graphite disk inside a vertical reaction tube (height 1.8m, I.D....

journal_title：Ultrasonics

authors： Komarov SV,Nemeth S,Hirasawa M

更新日期：2005-02-01 00:00:00