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An automated simultaneous measurement of thickness and wave velocity by ultrasound

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Abstract

The measurement of wave velocity in a sample requires an accurate determination of the sample thickness at the points of interrogation. The theory of an automated technique is presented. In its application, the thickness of the sample is first calculated by the knowledge of the wave velocity in the immersion fluid. This thickness is then used to calculate the wave velocity in the sample. The results of the application of the technique to isotropic and anisotropic materials are presented.

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Abbreviations

a, b :

distances, mm

c :

wave velocity in the sample, mm/μs

c w :

wave velocity in the surrounding fluid, mm/μs

f :

frequency, Hz

h :

sample thickness, mm

k 0 :

wave number in water, mm−1

k 1 :

wave number of a monochromatic harmonic wave wave in sample, mm−1

t :

time, s

F * :

Fourier transform of the displacement field, complex valued

R :

reflection coefficients

T :

transmission coefficients

U :

displacement

ρ:

density, g/mm3

ϕ:

phase, radians

ω:

circular frequency, radians/s

References

  1. Kinra, V.K. and Dayal, V., “Acoustic Methods of Evaluating Elastic Properties, or, Will the Real Young's Modulus Please Stand Up,” Manual on Experimental Methods for Mechanical Testing of Composites, ed. R.L. Pendelton and M.E. Tuttle, SEM, Bethel, CT.

  2. Wolfenden, A., Harmouche, M.R., Blessing, G.V., Chen, Y.T., Terranova, P., Dayal, V., Kinra, V.K., Lemmens, J.W., Phillips, R.R., Smith, J.S., Mahmoodi, P. andWann, R.J., “Dynamic Young's Modulus Measurements in Metallic Materials: Results of an Interlaboratory Testing Program,” JTEVA,17 (1),2–13 (1989).

    Google Scholar 

  3. McSkimin, M.J., “Pulse Superposition Method for Measuring Ultrasonic Wave Velocity in Solids,”J. Acoust. Soc. Amer.,33 (1),12 (1961).

    Article  Google Scholar 

  4. Papaddkis, E.P., “Absolute Accuracy of the Pulse-Echo and Pulse Superposition Method for Ultrasonic Velocity,”J. Acoust. Soc. Amer.,42 (5), (1967).

  5. Kuo, I.Y., Hete, B. andShung, K.K., “A Novel Method for the Measurement of Acoustic Velocity,”J. Acoust. Soc. Amer.,88 (4),1679–1682 (1990).

    Article  Google Scholar 

  6. Kinra, V.K. and Dayal, V., “A New Technique for Ultrasonic-Nondestructive Evaluation of Thin Specimens,”Experimental Mechanics,28 (3), (1988).

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Authors and Affiliations

  1. Aerospace Engineering and Engineering Mechanics Department, Iowa State University, 50011, Ames, IA

    Vinay Dayal (Assistant Professor)

  2. Faculty Associate, Center for Nondestructive Evaluation, Iowa State University, 50011, Ames, IA

    Vinay Dayal (Assistant Professor)

Authors
  1. Vinay Dayal
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Dayal, V. An automated simultaneous measurement of thickness and wave velocity by ultrasound. Experimental Mechanics 32, 197–202 (1992). https://doi.org/10.1007/BF02319355

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  • DOI: https://doi.org/10.1007/BF02319355

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