Influence of bubble clustering on multibubble sonoluminescence.

abstract：:In general, the design and analysis of ultrasonic motor and motor's control strategy are based on mathematical model. The academic model is widely used in the analysis of traveling wave ultrasonic motor (TWUSM). But the dispersive characteristic of piezoelectric ceramics and other complicated process, such as the fric...

journal_title：Ultrasonics

authors： Jingzhuo S,Dongmei Y

更新日期：2014-02-01 00:00:00

abstract：:In this research, the use of powerful sonification is studied in making the extraction of tannins more efficient. A combined extraction-filtration system using sonification was designed and modelled. Preliminary extraction studies were carried out to show the effect of ultrasound in extraction. In these experiments hi...

journal_title：Ultrasonics

authors： Mantysalo M,Mantysalo E

更新日期：2000-03-01 00:00:00

abstract：:In most applications of MEMS the mechanical properties of the used materials are key parameters for the perfect working of the microsystems. Measuring bulk acoustic waves excited in MEMS structures with ultra-short laser pulses is a powerful method for the accurate and non-destructive evaluation as well as for the cha...

journal_title：Ultrasonics

authors： Profunser DM,Vollmann J,Dual J

更新日期：2004-04-01 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：:Since the identification of micro-cracks in engineering materials is very valuable in understanding the initial and slight changes in mechanical properties of materials under complex working environments, numerical simulations on the propagation of the low frequency S0 Lamb wave in thin plates with randomly distribute...

journal_title：Ultrasonics

authors： Zhao Y,Li F,Cao P,Liu Y,Zhang J,Fu S,Zhang J,Hu N

更新日期：2017-08-01 00:00:00

abstract：:Our study aims at the creation of a numerical toolbox that describes wave propagation in samples containing internal contacts (e.g. cracks, delaminations, debondings, imperfect intergranular joints) of known geometry with postulated contact interaction laws including friction. The code consists of two entities: the co...

journal_title：Ultrasonics

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

更新日期：2018-01-01 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：:Experimental studies of thermal effects in high-intensity focused ultrasound (HIFU) procedures are often performed with the aid of fine wire thermocouples positioned within tissue phantoms. Thermocouple measurements are subject to several types of error which must be accounted for before reliable inferences can be mad...

journal_title：Ultrasonics

authors： Dasgupta S,Banerjee RK,Hariharan P,Myers MR

更新日期：2011-02-01 00:00:00

abstract：:This paper describes a laser optical technique for the detection of in-plane (IP) motion of ultrasonic waves propagating in solids. This interference-based laser optical technique includes a tiny square indentation with a width of about 30 microm on the sample surface and a relatively simple optical arrangement. The c...

journal_title：Ultrasonics

authors： Yang CH,Tsai YC

更新日期：2006-12-22 00:00:00

abstract：:Sonic crystals are artificial structures consisting of a periodic array of acoustic scatterers embedded in a homogeneous matrix material, with a usually large impedance mismatch between the two materials. They exhibit strong sound attenuation at selective frequency bands due to the interference of multiply reflected w...

journal_title：Ultrasonics

authors： Hirsekorn M,Delsanto PP,Batra NK,Matic P

更新日期：2004-04-01 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 estimation of clamping force has been regarded as the main issue in the maintenance of high-tension bolts. This paper proposes a method which uses the dependency of ultrasonic velocity on stress based on the nonlinear elastic effect. The variation of ultrasonic velocity in the range of actual stress acting in the ...

journal_title：Ultrasonics

authors： Jhang KY,Quan HH,Ha J,Kim NY

更新日期：2006-12-22 00:00:00

abstract：:Lithium niobate, LiNbO(3), is a piezoelectric material well known for its high Curie temperature. However, it has often been neglected for use in ultrasonic transducers because of its low electro-mechanical coupling coefficients. Recent advances in signal processing have made this disadvantage less significant and we ...

journal_title：Ultrasonics

authors： Schmarje N,Kirk KJ,Cochran S

更新日期：2007-12-01 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：: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：:Effective receive beamforming in medical ultrasound imaging is important for enhancing spatial and contrast resolution. In current ultrasound receive beamforming, a constant sound speed (e.g., 1540m/s) is assumed. However, the variations of sound speed in soft tissues could introduce phase distortions, leading to degr...

journal_title：Ultrasonics

authors： Yoon C,Lee Y,Chang JH,Song TK,Yoo Y

更新日期：2011-10-01 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：:Elastography is an imaging technique based on strain estimation in soft tissues under quasi-static compression. The stress is usually created by a compression plate, and the target is imaged by an ultrasonic linear array. This configuration is used for breast elastography, and has been investigated both theoretically ...

journal_title：Ultrasonics

authors： Souchon R,Soualmi L,Bertrand M,Chapelon JY,Kallel F,Ophir J

更新日期：2002-05-01 00:00:00

abstract：:The film condensation of vapor on a cooled, downward-facing surface is a complex dynamic fluid phenomenon. This paper will describe the theoretical basis, instrumentation approach, and experimental results for a method for ultrasonic monitoring of film condensation. The ultrasound measurement system utilizes a 10 MHz ...

journal_title：Ultrasonics

authors： Pedersen PC,Cakareski Z,Hermanson JC

更新日期：2000-03-01 00:00:00

abstract：:We study thickness-shear vibration of a quartz plate connected to two piezoelectric ceramic plates with initial deformations caused by a biasing electric field. The theory for small deformations superposed on finite biasing deformations in an electroelastic body is used. It is shown that the resonant frequencies of th...

journal_title：Ultrasonics

authors： Zhou Y,Chen W,Yang J,Du J

更新日期：2011-02-01 00:00:00

abstract：:The electromagnetic acoustic transducers (EMATs) with a meander-line coil possess the capability of generating Lamb waves carrying multiple wavelengths, and the characteristics of multiple wavelengths is analyzed by developing a spatial transversal filter model for the EMAT. It is shown that the characteristics is due...

journal_title：Ultrasonics

authors： Zhai G,Jiang T,Kang L

更新日期：2014-02-01 00:00:00

abstract：:The effect of a weak surface, near-surface and interfacial inhomogeneity on the frequency dependence of the surface wave velocity and of the SH (shear horizontal) wave reflectivity in isotropic elastic media is studied analytically and numerically. The inhomogeneity is modeled as an infinite planar layer with continuo...

journal_title：Ultrasonics

authors： Baron C,Shuvalov AL,Poncelet O

更新日期：2007-03-01 00:00:00

abstract：:In previous work, we have demonstrated the use of single-holed Armoured Microbubbles (AMBs) for microfluidic mixing and self-propulsion. AMBs are hollow partial spheres, inside which we capture a bubble. Under ultrasound, the bubble oscillates, generating a streaming flow with velocities of 1-100 mm/s in water. In thi...

journal_title：Ultrasonics

authors： Spelman TA,Stephan O,Marmottant P

更新日期：2020-03-01 00:00:00

abstract：:The present study investigated the accuracy of micro-scale finite element modeling for simulating broadband ultrasound propagation in water-saturated trabecular bone-mimicking phantoms. To this end, five commercially manufactured aluminum foam samples as trabecular bone-mimicking phantoms were utilized for ultrasonic ...

journal_title：Ultrasonics

authors： Vafaeian B,Le LH,Tran TN,El-Rich M,El-Bialy T,Adeeb S

更新日期：2016-05-01 00:00:00

abstract：:The purpose of this study was to investigate practical, safe, easy-to-use, non-cytotoxic, and reliable parameters to apply to an ultrasound (US) naked gene therapy system. The ultrasound pressure at the point of cell exposure was measured using a calibrated hydrophone and the intensity calculated. An acoustic power me...

journal_title：Ultrasonics

authors： Wei W,Zhengzhong B,Yongjie W,Lafeng Y,Yalin M

更新日期：2004-12-01 00:00:00

abstract：:The acousto-optic interaction with leaky surface acoustic wave radiation into the bulk of YX-cut LiTaO(3) crystals has been investigated. The light incidence and diffraction angles corresponding to the strongest acousto-optic interaction were calculated and measured as functions of the acoustic wave frequency. The dep...

journal_title：Ultrasonics

authors： Belovickis J,Rimeika R,Ciplys D

更新日期：2012-07-01 00:00:00

abstract：:This paper presents the results of the theoretical and 2D FEM modeling excitation and detection of evanescent acoustic waves in piezoelectric plates. By application of 2D ordinary differential equations derived by Auld, we obtained the dispersion curves of A1 and SH1 waves in YX LiNbO3 and YX KNbO3 plates in proximity...

journal_title：Ultrasonics

authors： Kuznetsova I,Nedospasov I,Smirnov A,Qian ZH,Wang B,Dai XY

更新日期：2019-11-01 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

abstract：:Ultrasonic vibration cutting is an efficient cutting process for mechanical micro-machining. This process can generate intricate surface textures with different geometric characteristics. Micro-grooves/micro-channels are among the most frequently encountered micro-structures and, as such, are the focus of this paper. ...

journal_title：Ultrasonics

authors： Zhang C,Guo P,Ehmann KF,Li Y

更新日期：2016-04-01 00:00:00

abstract：:The local evaluation of several parameters of a crack is realized with a nonlinear laser ultrasonic method. The method is based on the sample excitation by two laser beams, independently intensity modulated at two cyclic frequencies ωH and ωL (ωH≫ωL) and on the detection of nonlinear frequency-mixing ultrasonic compon...

journal_title：Ultrasonics

authors： Mezil S,Chigarev N,Tournat V,Gusev V

更新日期：2016-07-01 00:00:00