The Scattering Response of a Flat-Bottom Hole

  • Lester W. SchmerrJr.
  • Alexander Sedov


The flat-bottom hole is one of the oldest reference/calibration standards in the field of ultrasonic nondestructive evaluation (NDE). It has been used for both calibration of ultrasonic test equipment sensitivity and for the generation of distance-amplitude correction (DAC) curves [1]. Flat-bottom holes are also useful for equivalent flaw sizing applications since they can represent the response, at normal incidence, of ideal “perfect” scatterers, such as flat cracks.


Scattered Wave Kirchhoff Approximation Quantitative Nondestructive Evaluation Flat Crack Ultrasonic Nondestructive Evaluation 
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  1. 1.
    Halmshaw, R., Nondestructive Testing, Edward Arnold Publishers, Ltd., London, England, (1987).Google Scholar
  2. 2.
    Krautkramer, J., “Determination of the size of defects by the ultrasonic impulse echo method”, Brit. J. Appl. Phys., 10, pp. 240–245, (1959).CrossRefGoogle Scholar
  3. 3.
    Krautkramer, J. and H. Krautkramer, Ultrasonic Testing of Materials. Springer-Verlag, N. Y., (1983).CrossRefGoogle Scholar
  4. 4.
    Thompson, R. B. and T. A. Gray, “A model relating ultrasonic scattering measurements through liquid-solid interfaces to unbounded medium scattering amplitudes”, J. Acoust. Soc. Am. 74 pp. 1279–1290, (1983).CrossRefGoogle Scholar
  5. 5.
    Kino, G. S., Acoustic Waves: Devices, Imaging, and Analog Signal Processing, Prentice Hall, Inc., N. J., (1987).Google Scholar
  6. 6.
    Sedov, A. and L. W. Schmerr, “An elastodynamic transducer model I. Compressional wave type”, (to appear).Google Scholar
  7. 7.
    Schmerr, L. W. And A. Sedov, “An elastodynamic transducer model II. Shear wave type”, (to appear).Google Scholar
  8. 8.
    Sedov, A. And L. W. Schmerr, “Elastodynamic diffraction correction integrals”, (to appear).Google Scholar
  9. 9.
    Schoch, A., “Betrachtungen über das Schallfeld einer Kolbenmembran”, Akust. Z., 6, pp. 318–326, (1941).Google Scholar
  10. 10.
    Morse, P. M. and K. Uno Ingard, Theoretical Acoustics, Princeton University Press, N. J., (1986).Google Scholar

Copyright information

© Springer Science+Business Media New York 1989

Authors and Affiliations

  • Lester W. SchmerrJr.
    • 1
  • Alexander Sedov
    • 2
  1. 1.Center for NDE and the Department of Engineering Science and Mechanics and the Engineering Research InstituteIowa State UniversityAmesUSA
  2. 2.Department of Mechanical EngineeringLakehead UniversityThunder BayCanada

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