Bolt axial stress measurement based on a mode-converted ultrasound method using an electromagnetic acoustic transducer.

abstract：:Thrombosis is an extremely critical clinical condition where a clot forms inside a blood vessel which blocks the blood flow through the cardiovascular system. Previous sonothrombolysis methods using ultrasound and microbubbles (MBs) often have a relatively low lysis rate due to the low microbubbles concentration at cl...

journal_title：Ultrasonics

authors： Zhang B,Kim H,Wu H,Gao Y,Jiang X

更新日期：2019-09-01 00:00:00

abstract：:A practical optodynamic study was performed to determine the usability of different lengths of laser pulses for the generation of ultrasonic transients in a solid material. The aim of the study was to evaluate the possibility of a dual use for a laser pulse-for laser material processing, on the one hand, and for the u...

journal_title：Ultrasonics

authors： Hrovatin R,Petkovsek R,Diaci J,Mozina J

更新日期：2006-12-22 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：:The second and third-order Brugger elastic constants are obtained for liquids and ideal gases having an initial hydrostatic pressure p1. For liquids the second-order elastic constants are C₁₁=A+p₁, C₁₂=A-p₁, and the third-order constants are C₁₁₁=-(B+5A+3p₁), C₁₁₂=-(B+A-p₁), and C₁₂₃=A-B-p₁, where A and B are the Beye...

journal_title：Ultrasonics

authors： Cantrell JH

更新日期：2014-07-01 00:00:00

abstract：:We perform a multiscale analysis of the backscattering properties of a complex interface between water and a layer of randomly arranged glass beads with diameter D=1 mm. An acoustical experiment is done to record the wavelet response of the interface in a large frequency range from lambda/D=0.3 to lambda/D=15. The wav...

journal_title：Ultrasonics

authors： Le Gonidec Y,Gibert D

更新日期：2006-11-01 00:00:00

abstract：:Accurate characterization of the characteristic dimensions of a periodically corrugated surface using ultrasonic imaging technique is investigated both theoretically and experimentally. The possibility of accurately characterizing the characteristic dimensions is discussed. The condition for accurate characterization ...

journal_title：Ultrasonics

authors： Liu J,Declercq NF

更新日期：2013-04-01 00:00:00

abstract：:Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disease. Quantitative ultrasound facilitates clinical grading of hepatic steatosis (the early stage of NAFLD). However, the utility of quantitative ultrasound as a first-line method for community screening of hepatic steatosis remains unclear. T...

journal_title：Ultrasonics

authors： Chang TY,Chang SH,Lin YH,Ho WC,Wang CY,Jeng WJ,Wan YL,Tsui PH

更新日期：2021-03-01 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：:Nitric oxide (NO) has been implicated in smooth muscle relaxation. Its use has been widespread in cardiology. Due to the effective scavenging of NO by hemoglobin, however, the drug has to be applied locally or in large quantities, to have the effect desired. We propose the use of encapsulated microbubbles that act as ...

journal_title：Ultrasonics

authors： Postema M,Bouakaz A,ten Cate FJ,Schmitz G,de Jong N,van Wamel A

更新日期：2006-12-22 00:00:00

abstract：:The natural frequencies and distributions of displacement components for the surface vibrational modes in thin isotropic elastic disks are calculated. In particular, the research is focused on even solutions for low-lying resonant vibrations with large angular wave numbers. Several families of modes are found which ar...

journal_title：Ultrasonics

authors： Dmitriev AV,Gritsenko DS,Mitrofanov VP

更新日期：2014-03-01 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：:Cones and wedges inserted between an ultrasonic transducer and the specimen provide the transducer (circular or rectangular shape) with enhanced capability for point or line contact with the specimen. Such an arrangement is useful in that the transducer can be used for transmitting to and receiving from a point (or li...

journal_title：Ultrasonics

authors： Rus G,Wooh SC,Gallego R

更新日期：2005-03-01 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：: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：:This paper reports the development of a two-dimensional thick film lead zirconate titanate (PZT) ultrasonic transducer array, operating at frequency approximately 7.5MHz, to demonstrate the potential of this fabrication technique for microparticle manipulation. All layers of the array are screen-printed then sintered ...

journal_title：Ultrasonics

authors： Qiu Y,Wang H,Gebhardt S,Bolhovitins A,Démoré CE,Schönecker A,Cochran S

更新日期：2015-09-01 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：:This paper presents a new method of measuring dispersion curves of leaky Lamb waves propagating in a thin plate. The measurement system is based on a lens-less line-focus transducer and its defocusing measurement technique. A new waveform processing method known as V(f, z) method is introduced for analyzing the measur...

journal_title：Ultrasonics

authors： Lee YC

更新日期：2001-06-01 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：:A cylindrical standing wave ultrasonic motor using bending vibration transducer was proposed in this paper. The proposed stator contains a cylinder and a bending vibration transducer. The two combining sites between the cylinder and the transducer locate at the adjacent wave loops of bending vibration of the transduce...

journal_title：Ultrasonics

authors： Liu Y,Chen W,Liu J,Shi S

更新日期：2011-07-01 00:00:00

abstract：:A novel nanocomposite-inspired in-situ broadband ultrasonic sensor previously developed, with carbon black as the nanofiller and polyvinylidene fluoride as the matrix, was networked for acousto-ultrasonic wave-based passive and active structural health monitoring (SHM). Being lightweight and small, this kind of sensor...

journal_title：Ultrasonics

authors： Liu M,Zeng Z,Xu H,Liao Y,Zhou L,Zhang Z,Su Z

更新日期：2017-07-01 00:00:00

abstract：:In this paper, we propose a semi-analytical isogeometric analysis(S-IGA) approach in the twist space to investigate the dispersive properties in helical thread waveguides, which combines the advantages of the spectral approach and IGA. The convergence and accuracy of the proposed method are discussed, by comparing S-I...

journal_title：Ultrasonics

authors： Liu Y,Han Q,Liang Y,Xu G

更新日期：2018-02-01 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：:In the food industry, ultrasonic cutting is used to improve separation by a reduction of the cutting force. This reduction can be attributed to the modification of tool-workpiece interactions at the cutting edge and along the tool flanks because of the superposition of the cutting movement with ultrasonic vibration of...

journal_title：Ultrasonics

authors： Schneider Y,Zahn S,Schindler C,Rohm H

更新日期：2009-06-01 00:00:00

abstract：:The fundamental role of the assumption of plane wave ultrasonic propagation in attenuation and scattering measurements on soft tissues is discussed. The evidence for and against the validity of the assumption is shown to be inconclusive. An experimental procedure for direct assessment, by measurement of the ultrasonic...

journal_title：Ultrasonics

authors： Aindow JD,Chivers RC

更新日期：1988-03-01 00:00:00

abstract：:A coordinated theoretical, numerical and experimental study is carried out in an effort to interpret the characteristics of propagating guided Lamb wave modes in presence of a high-density (HD) core region in a honeycomb composite sandwich structure (HCSS). Initially, a two-dimensional (2D) semi-analytical model based...

journal_title：Ultrasonics

authors： Sikdar S,Banerjee S

更新日期：2016-09-01 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：:We derive a simple expression, which gives an approximate value of the Rayleigh wave velocity in an isotropic solid. This approximation is five times better than that given by Viktorov. The velocity equation can be easily inverted in order to obtain an accurate determination of the elastic constants. This procedure ca...

journal_title：Ultrasonics

authors： Royer D,Clorennec D

更新日期：2007-03-01 00:00:00

abstract：:Skeletal muscle is an important secretory organ in mammals, producing myriad chemical mediators ("myokines") with distinct biological action in different tissues, including anti-inflammatory activity. Extracellular vesicles (EVs) have recently been identified as a mode of myokine transport from muscle, facilitating su...

journal_title：Ultrasonics

authors： Maeshige N,Langston PK,Yuan ZM,Kondo H,Fujino H

更新日期：2021-02-01 00:00:00

abstract：:It has been suggested that viscous losses, caused by the motion of myofibrils relative to their environmental fluid, could be the major cause of ultrasound attenuation in muscle. This Paper presents theoretical and experimental estimates of the viscous component of attenuation in suspensions of myofibrils. Experimenta...

journal_title：Ultrasonics

authors： Shore D,Miles CA

更新日期：1988-01-01 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