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Reflection from elastic discontinuities

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Abstract

Elastic mismatching is studied by an impulse technique. Elastic mismatches are created by joining two latex rubber tubes of the same internal diameter but different wall thickness. A short duration pressure impulse is generated at the entrance of the water-filled tube system and the transmission characteristics of the impulse are determined from a series of measurements along the tube system using a catheter-tip pressure manometer. This technique enables the magnitude and phase change of the reflection at the elastic discontinuity to be obtained. A number of tube combinations are examined and in all cases a good agreement is shown between the measured reflection coefficient and the value calculated theoretically.

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Author notes

  1. D. L. Newman

    Present address: Department of Applied Physics, Royal Melbourne Institute of Technology, Melbourne, Australia

Authors and Affiliations

  1. Physics Department, Guys Hospital Medical School, London, England

    D. L. Newman

  2. Department of Morbid Anatomy, The London Hospital, London, England

    S. E. Greenwald

  3. Department of Mathematics, University of Alberta, Edmonton, Canada

    T. Bryant Moodie

Authors
  1. D. L. Newman
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  2. S. E. Greenwald
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  3. T. Bryant Moodie
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Newman, D.L., Greenwald, S.E. & Bryant Moodie, T. Reflection from elastic discontinuities. Med. Biol. Eng. Comput. 21, 697–701 (1983). https://doi.org/10.1007/BF02464032

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  • DOI: https://doi.org/10.1007/BF02464032

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