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 components at frequencies ωH±nωL (n an integer). Frequency-mixing is a nonlinear process originating from the modulation of the crack state at low frequency ωL by laser-induced thermo-elastic stresses, which causes in turn the modulation of the acoustic waves at frequency ωH reflected/transmitted by the crack. We carry experiments with increasing laser power and observe a non-monotonous variation in the amplitude of up to 6 nonlinear sidelobes. We also improve a previously introduced theoretical model which leads to interpreting the experimental observations by the combined action on the crack of the thermo-elastic waves at low frequency ωL and of the stationary thermo-elastic stresses at ω=0. The latter are induced by the average laser power absorbed by the sample. While thermo-elastic wave can periodically modulate the parameters of the crack up to its periodic opening/closing, the stationary heating could cause complete local closure of the crack. By fitting the experimental amplitude evolutions for all monitored sidelobes with the theoretically predicted ones, various local parameters of the crack are extracted, including its local width and effective rigidity.
journal_name
Ultrasonicsjournal_title
Ultrasonicsauthors
Mezil S,Chigarev N,Tournat V,Gusev Vdoi
10.1016/j.ultras.2016.04.005subject
Has Abstractpub_date
2016-07-01 00:00:00pages
225-35eissn
0041-624Xissn
1874-9968pii
S0041-624X(16)30015-4journal_volume
69pub_type
杂志文章相关文献
ULTRASONICS文献大全abstract::An approximate formula has been developed to determine the electromechanical coupling coefficient of the piezoelectric film in a four-layer composite resonator, which includes two electrodes. In this formula, the coupling coefficient can be calculated from the distribution of the effective coupling coefficients, k2eff...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/s0041-624x(99)00172-9
更新日期:2000-03-01 00:00:00
abstract::Clinical ultrasound images are often perceived as difficult to interpret due to image blurring and speckle inherent in the ultrasound imaging. But the image quality can be improved by deconvolution using an estimate of the point-spread function. However, it is difficult to obtain a sufficiently accurate estimate of th...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2008.10.005
更新日期:2009-03-01 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
pub_type: 杂志文章
doi:10.1016/j.ultras.2013.12.014
更新日期:2014-04-01 00:00:00
abstract::The dispersion and attenuation features of the multi-physical fields coupled waves propagating in an infinite piezoelectric semiconductor and the reflection problem at a boundary which is mechanically free, electrically insulation and the dielectrically open circuit are studied in this paper. Different from the classi...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2018.09.009
更新日期:2019-02-01 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
pub_type: 杂志文章
doi:10.1016/j.ultras.2010.07.002
更新日期:2011-02-01 00:00:00
abstract::This paper presents the experimental study of a miniaturized surface acoustic waves (SAWs) rotary motor and the theoretical calculation. After the first success in SAW rotary motor operating at 9.85 MHz, a smaller rotary motor is designed. With the operating frequency of 30 MHz and the driving voltage of 120 V(p-p), t...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/s0041-624x(02)00264-0
更新日期:2002-06-01 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
pub_type: 杂志文章
doi:10.1016/j.ultras.2017.05.016
更新日期:2017-11-01 00:00:00
abstract::Fundamental understanding of ultrasound interaction with material discontinuities having closed interfaces has many engineering applications such as nondestructive evaluation of defects like kissing bonds and cracks in critical structural and mechanical components. In this paper, to analyze the acoustic field nonlinea...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2017.12.007
更新日期:2018-03-01 00:00:00
abstract::Thallium bromide iodide crystal also known as KRS-5 is the well known material used in far infrared radiation applications for optical windows and lenses fabrication. The main advantage of this material is the transparency in wide band of wavelengths from 0.53 to 50μm. Despite such advantages as transparency and large...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2016.11.019
更新日期:2017-03-01 00:00:00
abstract::The matrix method for analyzing flexural vibration system is outlined. The displacement, stress and velocity gain of ultrasonic flexural vibration systems are investigated by transfer matrix method. A design method is given for flexural transducer and vibration system. ...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/s0041-624x(00)00034-2
更新日期:2000-11-01 00:00:00
abstract::It has been established that structural changes in a ferrofluid (formation of clusters) upon the effect of an external magnetic field can be effectively studied by ultrasound spectroscopy. In particular, the resonance absorption of ultrasonic waves enables detection and determination of the size of spherical clusters....
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/s0041-624x(02)00117-8
更新日期:2002-05-01 00:00:00
abstract::Numerical simulations of bubble oscillations in liquid water irradiated by an ultrasonic wave are performed for various acoustic amplitudes and various ambient pressures. In the numerical simulations, effect of non-equilibrium evaporation and condensation of water vapor at the bubble wall and that of chemical reaction...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2003.12.005
更新日期:2004-04-01 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::A split spectrum processing technique using a novel moving bandwidth minimization (MBM) method was developed to detect multiple specular targets having different spectral characteristics. Mathematical morphology (MM) algorithms were also implemented in order to compare the results. An experimental approach to optimal ...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/s0041-624x(99)00024-4
更新日期:1999-09-01 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
pub_type: 杂志文章
doi:10.1016/j.ultras.2009.03.001
更新日期:2009-06-01 00:00:00
abstract::As known, anomalous resisto-acoustic effect is a fundamental property for weakly inhomogeneous piezoactive waves (Bleustein-Gulyaev, Love, and some leaky waves). It consists in that the velocity of aforementioned waves first increases, achieves its maximum, and only then decreases with increasing conductance of a laye...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2015.01.007
更新日期:2015-05-01 00:00:00
abstract::Forced fluid flow can cause the enhancement of multibubble sonoluminescence (SL) under suitable conditions. The effect of directional flow with a circulator is similar to that of rotating flow with a stirrer. The mechanism of the enhancement is that both flows prevent cavitation bubbles from coalescing and clustering,...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2006.05.022
更新日期:2006-12-22 00:00:00
abstract::In this paper, high-speed photography was used to investigate the intrinsic dynamics of subharmonious surface wave in a vertical vibrated and idealized bidimensional granular layer. Using the high-speed photography, velocity fields of the granular layer at different stages through two cycles were obtained, which show ...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2006.05.196
更新日期:2006-12-22 00:00:00
abstract::This paper suggests a method for high-sensitivity damage detection. The method is based on pitch-catch measurements of Lamb waves combined with a baseline subtraction technique in the frequency-wavenumber domain. Small amplitude converted modes, generated during the interaction of propagating waves with damage, can th...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2013.08.010
更新日期:2014-02-01 00:00:00
abstract::A nonlinear acoustic method to assess the damage level of a complex medium is discussed herein. Thanks to the highly nonlinear elastic signatures of cracks or, more generally, internal solid contacts, this method is able to distinguish between contributions from linear wave scattering by a heterogeneity and contributi...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2016.09.015
更新日期:2017-01-01 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::In order to investigate non-destructively the bonding between rough plates, the problem of Lamb waves propagating on a rough plate is addressed in this paper. Numerical analysis is performed on periodical gratings made of identical triangular grooves. If the surface profile is made up of grooves with one periodicity, ...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2006.05.052
更新日期:2006-12-22 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
pub_type: 杂志文章
doi:10.1016/j.ultras.2007.08.002
更新日期:2007-12-01 00:00:00
abstract::Influence of clustering of cavitation bubbles on multibubble sonoluminescence (MBSL) in standing wave fields is studied through measurement of MBSL intensity with a photomultiplier tube and observation of corresponding bubble behavior with a high-speed video camera and an intensified charge-coupled device one. It is c...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/s0041-624x(02)00193-2
更新日期:2002-05-01 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
pub_type: 杂志文章
doi:10.1016/0041-624x(91)90028-7
更新日期:1991-07-01 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
pub_type: 杂志文章
doi:10.1016/j.ultras.2006.05.076
更新日期:2006-12-22 00:00:00
abstract::In medical ultrasound imaging, dynamic range (DR) is defined as the difference between the maximum and minimum values of the displayed signal to display and it is one of the most essential parameters that determine its image quality. Typically, DR is given with a fixed value and adjusted manually by operators, which l...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2014.09.012
更新日期:2015-02-01 00:00:00
abstract::Measurements of elastic constants of the austenite phase when approaching the phase transformation either upon cooling or stressing is of the crucial interest for the shape memory alloy field. Acoustic properties (wave velocity and also attenuation changes) of the Cu-Al-Ni single crystal were investigated in situ duri...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2004.01.029
更新日期:2004-04-01 00:00:00
abstract::The remote inspection for defects in large metallic elements such as pipes, tubes and plates is a field where guided waves are being applied with success. There are a number of situations where a surface coating is added for corrosion protection or insulation purposes. Since the coating materials are usually viscoelas...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2004.01.072
更新日期:2004-04-01 00:00:00
abstract::Investigation was carried out to study the effects of maximum aggregate size (MAS) (12.5mm, 19.0mm, 25.0mm, 37.5mm, and 50.0mm) on ultrasonic pulse velocity (UPV) of concrete. For investigation, first class bricks were collected and broken to make coarse aggregate. The aggregates were tested for specific gravity, abso...
journal_title:Ultrasonics
pub_type: 杂志文章
doi:10.1016/j.ultras.2016.04.006
更新日期:2016-07-01 00:00:00