A theoretical study of ultrasonic wave transmission through a fluid–solid interface

Belgroune, Djema; Belleval, J.F. de; Djelouah, H.

doi:10.1016/j.ultras.2008.01.003

Cited by 31 publications

(12 citation statements)

References 22 publications

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“…c L is the velocity of the longitudinal wave in the host material. Substituting equations (11) and 12into equation 10, the longitudinal scattering amplitude A i r, k L ð Þ can be expressed as…”

Section: Theoretical Model Of Inverse Scattering Reconstruction Algormentioning

confidence: 99%

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An ultrasonic inverse scattering imaging technique for defect located at an arbitrary position in the cylindrical material

Zhou

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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In order to meet the quantitative nondestructive evaluation requirements for a cylindrical material, an ultrasonic inverse scattering technique is proposed to reconstruct the defect located at an arbitrary position in the cylindrical material, which can obtain the quantitative geometrical information of a defect from the backscattering data. In order to overcome the problem of incident wave amplitude variation with the relative position between transducer and defect due to the diffraction effect of ultrasonic transducer, the backscattering signal is corrected before input to the defect reconstruction. Three aluminum cylindrical specimens with elliptical defect or circular defect are prepared for experiments, and the results proved the feasibility and validity of this method.

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Section: Theoretical Model Of Inverse Scattering Reconstruction Algormentioning

confidence: 99%

“…Many approaches for the ultrasonic filed calculation have been addressed. [11][12][13] Most of these methods are based on the mathematical formulation of Huygens principle, such as Rayleigh integral method (RIM). These numerical integration methods have been proved to be efficient.…”

Section: Introductionmentioning

confidence: 99%

An ultrasonic inverse scattering imaging technique for defect located at an arbitrary position in the cylindrical material

Zhou

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…It can be shown how the acoustic field will develop [19][20]. When considered in a 2D model, the wave equation can be described by a scalar potential ( , , )…”

Section: The Acoustic Field Of the Lcr Wavementioning

confidence: 99%

Analysis of critically refracted longitudinal waves

Pei¹,

Bond²

2015

AIP Conference Proceedings

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Fabrication processes, such as, welding, forging, and rolling can induce residual stresses in metals that will impact product performance and phenomena such as cracking and corrosion. To better manage residual stress tools are needed to map their distribution. The critically refracted ultrasonic longitudinal (LCR) wave is one such approach that has been used for residual stress characterization. It has been shown to be sensitive to stress and less sensitive to the effects of the texture of the material. Although the LCR wave is increasingly widely applied, the factors that influence the formation of the LCR beam are seldom discussed. This paper reports a numerical model used to investigate the transducers' parameters that can contribute to the directionality of the LCR wave and hence enable performance optimization when used for industrial applications. An orthogonal test method is used to study the transducer parameters which influence the LCR wave beams. This method provides a design tool that can be used to study and optimize multiple parameter experiments and it can identify which parameter or parameters are of most significance. The simulation of the sound field in a 2-D "water-steel" model is obtained using a Spatial Fourier Analysis method. The effects of incident angle, standoff, the aperture and the center frequency of the transducer were studied. Results show that the aperture of the transducer, the center frequency and the incident angle are the most important factors in controlling the directivity of the resulting LCR wave fields.

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“…The accuracy and data processing speeds are the major challenges involved in the probe design process. Various semi-analytical methods have been developed to address this problem, such as Field II [1,2], FOCUS [3,4], DREAM [5,6], Ultrasim [7], k-wave [8], and the angular spectrum technique [9,10,11,12]. Additionally, the spatial impulse response (SIR) is an excellent method to predict the transient ultrasound field radiated by an ultrasonic phased array probe in an isotropic, homogeneous, and non-dissipative medium [13].…”

Section: Introductionmentioning

confidence: 99%

A Fast Method to Calculate the Spatial Impulse Response for 1-D Linear Ultrasonic Phased Array Transducers

Zou

Sun

Dong

et al. 2016

Sensors

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A method is developed to accurately determine the spatial impulse response at the specifically discretized observation points in the radiated field of 1-D linear ultrasonic phased array transducers with great efficiency. In contrast, the previously adopted solutions only optimize the calculation procedure for a single rectangular transducer and required approximation considerations or nonlinear calculation. In this research, an algorithm that follows an alternative approach to expedite the calculation of the spatial impulse response of a rectangular linear array is presented. The key assumption for this algorithm is that the transducer apertures are identical and linearly distributed on an infinite rigid plane baffled with the same pitch. Two points in the observation field, which have the same position relative to two transducer apertures, share the same spatial impulse response that contributed from corresponding transducer, respectively. The observation field is discretized specifically to meet the relationship of equality. The analytical expressions of the proposed algorithm, based on the specific selection of the observation points, are derived to remove redundant calculations. In order to measure the proposed methodology, the simulation results obtained from the proposed method and the classical summation method are compared. The outcomes demonstrate that the proposed strategy can speed up the calculation procedure since it accelerates the speed-up ratio which relies upon the number of discrete points and the number of the array transducers. This development will be valuable in the development of advanced and faster linear ultrasonic phased array systems.

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A theoretical study of ultrasonic wave transmission through a fluid–solid interface

Cited by 31 publications

References 22 publications

An ultrasonic inverse scattering imaging technique for defect located at an arbitrary position in the cylindrical material

An ultrasonic inverse scattering imaging technique for defect located at an arbitrary position in the cylindrical material

Analysis of critically refracted longitudinal waves

A Fast Method to Calculate the Spatial Impulse Response for 1-D Linear Ultrasonic Phased Array Transducers

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