Abstract：
:Theoretical formulation for the problem of second harmonic guided waves in pipes is presented from the principles of continuum mechanics. The formulation is carried out in the reference configuration of the pipe with an emphasis on the correct use of the "Divergence" operator in the reference configuration. Second harmonic guided wave generation from axis-symmetric longitudinal guided wave modes is studied. A large radius asymptotic approximation for the wave structures in pipe is studied and an error estimate for the same is obtained. Comparison with the corresponding modes in a plate and the analogy to second harmonic guided wave generation in plates is presented.
journal_name
Ultrasonicsjournal_title
Ultrasonicsauthors
Chillara VK,Lissenden CJdoi
10.1016/j.ultras.2012.12.007subject
Has Abstractpub_date
2013-04-01 00:00:00pages
862-9issue
4eissn
0041-624Xissn
1874-9968pii
S0041-624X(12)00268-5journal_volume
53pub_type
杂志文章相关文献
ULTRASONICS文献大全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
pub_type： 杂志文章
doi：10.1016/j.ultras.2018.10.011
更新日期：2019-03-01 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
pub_type： 杂志文章
doi：10.1016/j.ultras.2008.03.004
更新日期：2008-12-01 00:00:00
abstract：:This paper describes an optimization method of the top electrode size for a thin film matrix ultrasonic transducer (M-UT) in the frequency range above 200 MHz. The goal of this work is to design an optimal top electrode size for an M-UT providing the maximal output peak-peak voltage (V(PP)) and the maximal signal-to-n...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2012.10.018
更新日期：2013-03-01 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
pub_type： 杂志文章
doi：10.1016/j.ultras.2006.05.190
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
pub_type： 杂志文章
doi：10.1016/j.ultras.2010.12.006
更新日期：2011-07-01 00:00:00
abstract：:In this paper the study of frequency-dependent ultrasonic attenuation in strongly heterogeneous materials is addressed. To determine the attenuation accurately over a wide frequency range, it is necessary to have suitable excitation techniques. Three kinds of transmitted signals have been analysed, grouped according t...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2015.09.007
更新日期：2016-02-01 00:00:00
abstract：:The conventional acoustic nonlinear technique to evaluate the contact acoustic nonlinearity (CAN) at solid-solid contact interfaces (e.g., closed cracks), which uses the through-transmission of normally incident bulk waves, is limited in that access to both the inner and outer surfaces of structures for attaching puls...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2012.02.008
更新日期：2012-08-01 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
pub_type： 杂志文章
doi：10.1016/j.ultras.2014.07.009
更新日期：2015-02-01 00:00:00
abstract：:The present study investigated the effect of geometric parameters of the ultrasound instrument during meat salting in order to enhance salt diffusion and salt distribution in pork meat on a lab scale. The effects of probe size (∅2.5 and 1.3cm) and of different distances between the transducer and the meat sample (0.3,...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2017.03.017
更新日期：2018-02-01 00:00:00
abstract：:Sonothrombolysis is one of the most feasible methods for enhancing clot lysis with a recombinant tissue plasminogen activator (rt-PA) in cases of acute ischemic strokes. For safe and efficient clinical practices of sonothrombolysis, accurate estimation of ultrasound transmittance through the human skull is critical. P...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2017.02.012
更新日期：2017-05-01 00:00:00
abstract：:An inversion algorithm (termed AEDep) is proposed for estimating the depth of acoustic emission (AE) sources in plate-like structural components. The work is motivated by the need for characterizing early-stage fatigue crack growth in such components. The algorithm achieves depth estimation by automatically extracting...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2019.105975
更新日期：2019-11-01 00:00:00
abstract：:Non-linear acoustic oscillations of gas bubbles immersed in viscoelastic fluids are theoretically studied. The problem is formulated by considering a constitutive equation of differential type with an interpolated time derivative. With the aid of this rheological model, fluid elasticity, shear thinning viscosity and e...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2005.03.010
更新日期：2005-08-01 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
pub_type： 杂志文章
doi：10.1016/j.ultras.2016.01.010
更新日期：2016-04-01 00:00:00
abstract：:Temperature control of hyperthermia treatments is generally implemented with multipoint feedback system comprised of phased-array transducer, which is complicated and high cost. Our simulations to the acoustic field induced by a self-focused concave spherical transducer (0.5MHz, 9cm aperture width, 8.0cm focal length)...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2010.01.006
更新日期：2010-05-01 00:00:00
abstract：:This paper is concerned with the probing of the transversal envelope solitons propagation in circular waveguides when a set of requirements (non-linearity and dispersion) are fulfilled in the waveguide and balanced. The basic idea is to analyze the shape of an acoustic pulse after it has traveled one or few trips thro...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2014.01.016
更新日期：2014-07-01 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
pub_type： 杂志文章
doi：10.1016/s0041-624x(99)00062-1
更新日期：2000-03-01 00:00:00
abstract：:In the present paper, we report the first results concerning a centimetre cantilever driven through non-linear effects in thin magnetostrictive films. Bimorph centimetre beams (24 mm x 5 mm) were designed using 160 microns thick glass and 0.4 micron thick multilayer TbFe/Fe films deposited via RF sputtering, using sev...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/s0041-624x(99)00061-x
更新日期：2000-03-01 00:00:00
abstract：:This article describes the use of the frequency domain finite element (FDFE) technique for guided wave mode selection in inhomogeneous waveguides. Problems with Rayleigh-Lamb and Shear-Horizontal mode excitation in isotropic homogeneous plates are first studied to demonstrate the application of the approach. Then, two...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2015.12.007
更新日期：2016-04-01 00:00:00
abstract：:The aim of this paper is to investigate propagation characteristics and the generation mechanism of the nonlinear lowest-order symmetric Lamb mode (S0) which propagates downslope in free elastic plates with slowly linearly varying-thickness. From theoretical analyses, in a low frequency-thickness product (fd) range, t...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2018.11.013
更新日期：2019-04-01 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
pub_type： 杂志文章,评审
doi：10.1016/j.ultras.2008.02.002
更新日期：2008-08-01 00:00:00
abstract：:In this paper we discuss the existence of translational and rotational displacements of a sphere submitted to a tangential contact force. On the basis of the Bogdanov and Skvortsov's works [A.N. Bogdanov, A.T. Skvortsov, Sov. Phys. Acoust. 38 (1992) 224-226.] the dispersion equation has been established and solved for...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2006.07.019
更新日期：2006-12-01 00:00:00
abstract：BACKGROUND:Generalized coherence factor (GCF) can be adaptively estimated from channel data to suppress sidelobe artifacts. Conventionally, Fast Fourier Transform (FFT) is utilized to calculate the full channel spectrum and suffers from high computation load. In this work, autocorrelation (AR)-based algorithm is utiliz...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2016.07.015
更新日期：2016-12-01 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
pub_type： 杂志文章
doi：10.1016/s0041-624x(99)00214-0
更新日期：2000-03-01 00:00:00
abstract：:In this paper, the radial basis function (RBF) collocation method based on the nonlocal Eringen piezoelectricity theory is developed to compute the band structures of nanoscale multilayered piezoelectric phononic crystals taking account of nonlocal interface effects. Detailed calculations are performed for anti-plane ...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2016.09.009
更新日期：2017-01-01 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
pub_type： 杂志文章
doi：10.1016/0041-624x(88)90059-5
更新日期：1988-03-01 00:00:00
abstract：:The acceptance of broadband ultrasound attenuation (BUA) for the assessment of osteoporosis suffers from a limited understanding of both ultrasound wave propagation through cancellous bone and its exact dependence upon the material and structural properties. It has recently been proposed that ultrasound wave propagati...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2015.09.009
更新日期：2016-02-01 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
pub_type： 杂志文章
doi：10.1016/j.ultras.2015.01.003
更新日期：2015-04-01 00:00:00
abstract：:This paper describes fabrication and comparison of PMN-PT single crystal, PZT, and PZT-based 1-3 composite ultrasonic transducers for NDE applications. As a front matching layer between test material (Austenite stainless steel, SUS316) and piezoelectric materials, alumina ceramics was selected. The appropriate acousti...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2010.04.001
更新日期：2010-08-01 00:00:00
abstract：:In this paper, an experimental study of the effect of the resonator shape on the performance of a traveling-wave thermoacoustic engine is presented. Two different resonators were tested in the thermoacoustic-Stirling heat. One resonator is an iso-diameter one, and the other is a tapered one. To have a reasonable compa...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2006.08.008
更新日期：2006-12-22 00:00:00
abstract：:Although ultrasonic energy is widely used cleaning and degreasing of parts and assemblies in automotive and other industries, the use of ultrasonic energy in an industrial scale for textile washing is very new. This is due to the complexity of controlling the combination of chemical and mechanical effects, whereas wit...
journal_title：Ultrasonics
pub_type： 杂志文章
doi：10.1016/j.ultras.2004.02.005
更新日期：2004-04-01 00:00:00
