SwRI Turbine Disk-Rim Ultrasonic Inspection System
Comparison of inspection of blade attachments using focused and
conventional (unfocused) beams.
- Provides improved resolution and sensitivity for detection of stress
corrosion cracking
- Makes blade removal unnecessary
- Reduces plant downtime and costs
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Focused and conventional 5 MHz beams in a plane that is approximately
perpendicular to the disk face.
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Focused and conventional 5 MHz beams in a plane that is approximately
parallel to the disk face.
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The sensitivity advantages of the focused probes are shown through curves
plotted for 3 MHz (red), 5 MHz (green), and 7 MHz (black). The increased
sensitivity and resolution provided by the focused probes provides a
significantly improved signal-to-noise ratio that is critical when
attempting to detect, characterize, and size small flaws.
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For additional information, please contact:
James F. Crane
NDE Science and Technology Division
Southwest Research Institute
6220 Culebra Road
P.O. Box 28510
San Antonio, Texas 78228-0510
(210) 522-5167 (Voice)
(210) 684-4822 (Fax)
crane@swrinde.nde.swri.edu
