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Modelling Ultrasonic Inspection of Rough Defects

  • J. A. Ogilvy

Abstract

Ultrasonic signals are affected by the nature of the defects under investigation. One defect property known to alter signal amplitudes and pulse shapes is surface roughness. No exact theory is available to describe the interaction of ultrasonic waves with rough defects but approximate theories are of great value, over various regimes of validity [1,2]. We have combined one such approximation. Kirchhoff theory [1,2], with many aspects of a real inspection system, to provide a model for simulating the ultrasonic inspection of randomly rough defects. The model is currently acoustic, such that mode conversion effects cannot be predicted. This paper presents some details of the model, together with sample results. These include a comparison with experimental measurements from rough surfaces, showing favourable agreement.

Keywords

Rough Surface Defect Detectability Pulse Shape Ultrasonic Signal Ultrasonic Inspection 
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

© Springer Science+Business Media New York 1989

Authors and Affiliations

  • J. A. Ogilvy
    • 1
  1. 1.UKAEA, Theoretical Physics DivisionHARWELL LaboratoryDidcotUK

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