Enhanced experimental approach to measure the absolute ultrasonic wave attenuation

Thomas, Seldis

doi:10.1016/j.ultras.2009.07.001

Cited by 10 publications

(2 citation statements)

References 7 publications

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“…Given that it is an energy parameter, it is more easily affected by variability in the experimental setup than ultrasonic velocity, such as coupling problems between the ultrasonic sensor and the analysed material, energy loss due to cables, variability between sensors, and so on [6][7][8][9]. Despite these problems, the determination of the ultrasonic attenuation, and more specifically the frequencydependent ultrasonic attenuation, α( f ), [6,8,[10][11][12], is useful because it is sensitive to different defects in materials (e.g. voids, cracks) and other properties, specifically in concrete where the water to cement ratio and cement to aggregate ratio are important variables in concrete design, and they determine its mechanical and physical properties.…”

Section: Introductionmentioning

confidence: 99%

Airborne non-contact and contact broadband ultrasounds for frequency attenuation profile estimation of cementitious materials

et al. 2018

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Section: Introductionmentioning

confidence: 99%

Airborne non-contact and contact broadband ultrasounds for frequency attenuation profile estimation of cementitious materials

et al. 2018

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“…The first one is based on Seldis energetic method. This method is based on the comparison of the energy carried by the transmitted beam with the one of a "theoretical" beam calculated by multiplying the plane waves angular spectrum decomposition of the incident beam by the transmission coefficient calculated in the k-space [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Experimental determination of the complex stiffness tensor and Euler angles in anisotropic media using ultrasonic waves

Alaoui-Ismaili¹,

Guy²,

Chassignole³

2014

AIP Conference Proceedings

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The aim of this work is to measure the complex elastic tensor and Euler angles in very complex anisotropic media like austenitic steel welds, by inverse problem resolution from experimental data. The obtained experimental characteristics of the anisotropic material will be injected in a FE code developed by EDF enabling the simulation of an actual ultrasonic NDE of welds. The present work aims to provide reliable input data to the 3D future development of the code. In particular, this complex elastic tensor will allow to predict by modeling beam skewing ant attenuation in an austenitic weld. The investigation of such anisotropic media is very complex because of the directional dependency of the elastic stiffness tensor. Then we will discuss the use of a hybrid genetic algorithm to overcome this difficulty. The identification method is based on waveforms spectra reconstruction associated to a physical model describing wave propagation in plates, during underwater measurements. The entire procedure is qualified and validated using simulated data. Moreover, a comparison of the estimated elastic coefficients with literature values and ultrasonic measurements obtained in transmission is also given, at the end of the paper..

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Ratcheting damage evaluation based on critically refracted longitudinal wave combined with recurrence quantification analysis

Fan,

Zhang,

Meng

et al. 2025

Measurement

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Enhanced experimental approach to measure the absolute ultrasonic wave attenuation

Cited by 10 publications

References 7 publications

Airborne non-contact and contact broadband ultrasounds for frequency attenuation profile estimation of cementitious materials

Airborne non-contact and contact broadband ultrasounds for frequency attenuation profile estimation of cementitious materials

Experimental determination of the complex stiffness tensor and Euler angles in anisotropic media using ultrasonic waves

Ratcheting damage evaluation based on critically refracted longitudinal wave combined with recurrence quantification analysis

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