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Modeling of Ultrasonic Signals from Weak Inclusions

  • Chien-Ping Chiou
  • Frank J. Margetan
  • R. Bruce Thompson

Abstract

Recent research efforts aimed at improving the detection of hard-alpha inclusions have emphasized the need for accurately modeling the responses from such weakly-reflecting inclusions. The need arises because of the rare natural occurrence of hard-alpha inclusions, and consequently, the lacks of suitable experimental samples. These difficulties lend impetus to the application of signal modeling to augment and extend the experimental data in assessing detectability. Currently, a new approach is being developed for the purpose of predicting time-domain echoes from inclusions of specified morphology. This work is the continuation of our previous study of flat-bottomed holes [1–2] in constructing a methodology for estimating the probability of detection of flaws in titanium alloys based on a combination of physical and statistical models.

Keywords

Born Approximation Noise Floor Paraxial Approximation Kirchhoff Approximation Longitudinal Wave Speed 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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REFERENCES

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Copyright information

© Plenum Press, New York 1996

Authors and Affiliations

  • Chien-Ping Chiou
    • 1
    • 2
  • Frank J. Margetan
    • 1
    • 2
  • R. Bruce Thompson
    • 1
    • 2
  1. 1.Center for Nondestructive EvaluationIowa State UniversityAmesUSA
  2. 2.Department of Aerospace Engineering and Engineering MechanicsIowa State UniversityAmesUSA

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