Technique for Measuring Spatial Distribution of the Surface Acoustic Wave Velocity in Metals

• Autorzy: Mokryy O. , Tsyrulnyk O.

Identyfikatory

DOI

10.1515/aoa-2016-0071

• Języki publikacji: EN

Abstrakty

EN

In this paper a possibility of determining a local velocity of the surface acoustic Rayleigh waves using a transducer, with the rigidly connected emitting and receiving parts, is considered. A problem on spatial resolution of such a transducer for investigation of inhomogeneous specimens is also examined. A high spatial resolution can be obtained due to the transducer displacement by a value less than the distance between the emitting and receiving parts. It is shown that in this case it is not necessary to measure the transducer displacement with a high accuracy for precise determination of the velocity. Such an effect is obtained through measuring the velocity of surface waves in one local region of the specimen with respect to the other. The criterion for optimal spatial resolution selection during spatially inhomogeneous specimens study is also proposed. The proposed criterion use is illustrated on the example of the determination of spatial distribution of the surface acoustic velocity in a steel specimen subjected to inhomogeneous plastic deformation.

Słowa kluczowe

EN

ultrasound; surface acoustic waves; acoustic wave velocity; spatial resolution

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2016
• Tom: Vol. 41, No. 4
• Strony: 741--746
• Opis fizyczny: Bibliogr. 8 poz., fot., rys., wykr.

Twórcy

autor

Mokryy O.

• Karpenko Physico-Mechanical Institute of the NAS of Ukraine, Naukova 5, 79060 Lviv, Ukraine

autor

Tsyrulnyk O.

• Karpenko Physico-Mechanical Institute of the NAS of Ukraine, Naukova 5, 79060 Lviv, Ukraine

Bibliografia

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• 4. Lewandowski J. (2001), Evalution of material parameters, texture and stress of prestressed polycrystalline aggregate from ultrasonic measurements, Archives of Acoustics, 26, 4, 305–329.
• 5. Li W., Coulson J., Aveson J.W., Smith R. J., Clark M., Somekh M. G., Sharples S. D. (2013), Orientation Characterisation of Aerospace Materials by Spatially Resolved Acoustic Spectroscopy, 5th International Symposium on NDT in Aerospace, Singapore.
• 6. Murav’ev V. V., Zuev L. B., Komarov K. L. (1996), Velocity of Sound and Structure of Steel and Alloys [in Russian], Novosibirsk.
• 7. Wagner J. W. (1990), Optical detection of ultrasound. Physical Acoustics: Ultrasonic Measurement Methods, R. N. Thurston [Ed.], Boston, San Diego, New York, London, Sydney, Tokyo, Toronto, 19, 201–265.
• 8. Zhi W., Xiaojun Z., Yaodong C. (2000), Acoustoelastic determination of local surface stresses in polymethylmethacrylate, Applied Acoustics, 61, 477–485.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.