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Ultrasonic tomography for in-process measurements of temperature in a multi-phase medium

  • US 5,181,778 A
  • Filed: 09/30/1991
  • Issued: 01/26/1993
  • Est. Priority Date: 09/30/1991
  • Status: Expired due to Fees
First Claim
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1. A method of determining the temperature throughout a multi-phase medium on the basis of speed of sound tomography, the steps comprising:

  • establishing sectors throughout a cross-sectional portion of a multi-phase specimen;

    positioning ultrasonic transducers around the specimen such that multiple ultrasonic pulse flight paths traverse each established sector;

    transmitting multiple ultrasonic pulses by said ultrasonic transducers through each sector of the specimen;

    receiving said ultrasonic pulses which have travelled the established flight paths through said sectors of the specimen;

    identifying, measuring and recording the transit time of each ultrasonic pulse through said specimen;

    calculating the speed of sound through said sectors of the specimen;

    correlating a temperature in said sectors of the multi-phase specimen to said calculated speed of sound based upon established characteristics between speed of sound and temperature for said specimen.

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