Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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Inverse Analysis of Ultrasonic Signals of Ceramics Based on Ultrasonic Self-Compensating Technique

  • Lee Joon-Hyun (School of Mechanical Engineering Pusan National University) ;
  • Cheng Ansheng (Center for Quality Engineering and Failure Prevention Northwestern University)
  • Published : 2006.02.01
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Abstract

An ultrasonic self-calibrating technique for the characterization of a ceramic which was fabricated by change pressing time during the HIP process has been applied by using the ratio of the reflection and transmission coefficients of normal incidence longitudinal waves. The ratio is self-compensated, in that it is independent of the characteristics for transmission and reception of ultrasound by the transducer and the condition of the couplant. The insensitive direction in parameter space is defined as the direction in which the variation of the ratio to changes of two parameters vanishes. For inverse problem the distribution of minima in an error surface is investigated.

Keywords

References

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