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Campbell Testing Services

Let our test services consultants help with your Campbell testing.

Our Campbell Testing services include:

  • At-speed natural frequency measurements
  • Strain gage radio telemetry
  • Spin pit measurements
  • Operating plant measurements
  • Air jet excitation
  • Steam jet excitation
  • Magnetic excitation

SimuTech performs our Campbell testing service both in high speed balance facilities and in operating power plants.

Campbell testing is a technique for measuring the natural frequencies and mode shapes of rotating turbine blade (bucket) rows.

Strain gages and thermocouples are attached to the blades to measure dynamic strain and temperature as the blades rotate and vibrate. The gages are connected to a radio telemetry system that transmits signals from the rotating shaft to a stationary data acquisition system.

A variety of excitation systems including air, oil and steam jets, and electric magnets are used to stimulate vibration of the rotating blades.

Check out our Campbell Testing video.

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