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A Signal-To-Noise Ratio Comparison of Ultrasonic Transducers for C-Scan Imaging in Titanium

  • P. J. Howard
  • D. C. Copley
  • R. S. Gilmore
Chapter

Abstract

Digital data acquisition and the C-scan imaging of ultrasonic data offer improvements over analog recording techniques, such as strip-chart recording. As a result, peak-detected C-scan imaging is becoming the preferred method for the inspection of large titanium parts such as those found in the aircraft engine industry. The effectiveness of the inspection, however, still depends on the transducer. For this reason, a study of the effect of different transducer parameters on the sensitivity for detection of simulated defects in titanium specimens was conducted. Due to the increased emphasis on C-scan imaging, sensitivity is measured as an image-based signal-to-noise ratio.

Keywords

Beam Diameter Maximum Noise Digital Data Acquisition Focus Transducer Time Reversal Mirror 
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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Copyright information

© Plenum Press, New York 1995

Authors and Affiliations

  • P. J. Howard
    • 1
  • D. C. Copley
    • 1
  • R. S. Gilmore
    • 2
  1. 1.GE Aircraft EnginesCincinnatiUSA
  2. 2.GE Corporate Research & Development CenterSchenectadyUSA

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