Attenuation of ultrasonic waves in V, Nb and Ta at low temperatures

Singh, Devraj; Pandey, Dharmendra Kumar; Yadawa, Pramod Kumar; Yadav, Anil Kumar

doi:10.1016/j.cryogenics.2008.08.008

Cited by 22 publications

(19 citation statements)

References 23 publications

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“…In this research, it is believed that the curve of the attenuation vs temperature can be separated into two part: the first part corresponds to the temperature in the range of 0 to 15 o C and the second part corresponds to the temperature range from 15 to 50 o C. In the first part, the attenuation is strongly dependence on properties of coupling material which was viscous oil and became less viscous at low temperature, thus the attenuation was increased very quickly when the temperature decreased. In the second part, because the viscosity of the coupling material is very good with its gel state and the ultrasonic longitudinal wave could easily propagate through this layer with small absorption, the attenuation could be only effected by properties of sample material and it should be depended on C −3 longitudinal [7]. However, the change of C longitudinal is small when temperature increased from 15 to 50˚C (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Many factors can contribute to this dependence. P. Palanichamy et al showed that the attenuation of the ultrasonic beam is influenced by the grain size of steel [19], M. Molero et al though that the attenuation must be effected by the frequency of the ultrasonic wave [18], Devraj Singh et al showed that the attenuation of ultrasonic longitudinal wave depended on C −3 longitudinal [7], while N. Guo et al and ER. Generazio considered that the attenuation of ultrasonic beam is influenced by the thickness of the coupling material in the direct contact technique and unsteady pressure applied to the transducer and roughness [20].…”

Section: Resultsmentioning

confidence: 99%

“…. In these methods, the ultrasonic testing method is widely used to analyze and characterize the properties of materials [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Non-destructive Characteristics of Ultrasonic Waves in 1018 Low Carbon Steel

Kien¹,

Nhung²,

Thanh³

2014

Comm. in Phys.

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In this paper, the dependences of the velocities and the absorption coefficients of ultrasonic waves transmitted in 1018 low carbon steel on temperature ranging from 0\(^{\circ}\)C to 50\(^{\circ}\)C were investigated. It was shown that the velocities of the ultrasonic longitudinal wave and ultrasonic shear wave were decreased when the temperature increased. The transportation of the ultrasonic longitudinal wave and ultrasonic shear wave depends on temperature and its coefficient in a temperature range of (0 - 50 \(^{\circ}\)C) was estimated about 0.8 m/s.\(^{\circ}\)C and 0.44~m/s.\(^{\circ}\)C, respectively. These obtained results are in good agreement with the theoretical prediction. Furthermore, the absorption coefficients of the ultrasonic longitudinal wave were also studied.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Non-destructive Characteristics of Ultrasonic Waves in 1018 Low Carbon Steel

Kien¹,

Nhung²,

Thanh³

2014

Comm. in Phys.

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“…Also,  is the density of compound and  is angle with the unique axis of the crystal. For hexagonal nanostructured crystal the Debye average velocity is specified by the equation as [33,34]:…”

Section: Theorymentioning

confidence: 99%

Elastic, Mechanical and Thermophysical properties of Single-Phase Quaternary ScTiZrHf High-Entropy Alloy

Rai

Chaurasiya

Yadawa

2021

Phys. Chem. Solid St.

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Consequent to the interaction potential model, the high-order elastic constants at high entropy alloys in single-phase quaternary ScTiZrHf have been calculated at different temperatures. Elastic constants of second order (SOECs) helps to determine other ultrasonic parameters. With the help of SOECs other elastic moduli, bulk modulus, shear modulus, Young’s modulus, Pugh’s ratio, elastic stiffness constants and Poisson’s ratio are estimated at room temperature for elastic and mechanical characterization. The other ultrasonic parameters are calculated at room temperature for elastic and mechanical characterization. The temperature variation of ultrasonic velocities along the crystal's z-axis is evaluated using SOECs. The temperature variation of the average debye velocity and the thermal relaxation time (τ) are also estimated along this orientation axis. The ultrasonic properties correlated with elastic, thermal and mechanical properties which is temperature dependent is also discussed. The ultrasonic attenuation due to phonon – phonon (p-p) interactions is also calculated at different temperatures. In the study of ultrasonic attenuation such as a function of temperature, thermal conductivity appears to be main contributor and p- p interactions are the responsible reason of attenuation and found that the mechanical properties of the high entropy alloy ScTiZrHf are superior at room temperature.

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“…A number of books and review articles are available which gives experimental techniques and theoretical interpretation. In solids [10,11] there are several causes of ultrasonic attenuation, the most important being electron-phonon interaction at low temperatures [12,13] and phonon-phonon interaction at high temperatures [14,15]. There are several methods for theoretical evaluation of ultrasonic attenuation, but the most accepted and reliable one uses second and third order elastic constants (SOEC and TOEC) [10,11].…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of Nanostructured Iron Metal on Ultrasonic Properties

Gupta¹,

Gupta²,

Singh³

et al. 2011

OJMetal

Self Cite

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The present investigation is focused on the influence of the nanocrystalline structure of pure iron metal on the ultrasonic properties in the temperature range 100-300 K. The ultrasonic attenuation due to phononphonon interaction and thermoelastic relaxation phenomena has been evaluated for longitudinal and shear waves along <100>, <110> and <111> crystallographic directions. The second-and third-order elastic constants, ultrasonic velocities, thermal relaxation, anisotropy and acoustic coupling constants were also computed for the evaluation of ultrasonic attenuation in this temperature scale. The direction <111> is most appropriate to study longitudinal sound waves, while <100>, <110> direction are best to propagate shear waves due to lowest values of attenuation in these directions. Other physical properties correlated with obtained results have been discussed.

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Attenuation of ultrasonic waves in V, Nb and Ta at low temperatures

Cited by 22 publications

References 23 publications

Non-destructive Characteristics of Ultrasonic Waves in 1018 Low Carbon Steel

Non-destructive Characteristics of Ultrasonic Waves in 1018 Low Carbon Steel

Elastic, Mechanical and Thermophysical properties of Single-Phase Quaternary ScTiZrHf High-Entropy Alloy

Sensitivity of Nanostructured Iron Metal on Ultrasonic Properties

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