Experience in using holographic interferometry for studying the vibration of rotor parts in gas-turbine engines
Abstract
A technique of holographic interferometry is described for evaluating the vibration resistance of gas turbine rotor elements. The design of the holographic facility for investigating the vibration resistance of blades and disks by a time averaging method is described along with the experimental procedure involved. The proposed technique proves useful in providing an exact picture of the location of vibration nodes and a complete profile of vibration amplitudes for the total deflection of the object tested. It reduces considerably the time necessary for a comprehensive investigation of the characteristic shapes of the vibrations.
- Publication:
-
Problemy Prochnosti
- Pub Date:
- February 1977
- Bibcode:
- 1977PrPro...8...85B
- Keywords:
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- Accelerated Life Tests;
- Engine Tests;
- Gas Turbine Engines;
- Holographic Interferometry;
- Rotor Blades;
- Structural Vibration;
- Turbine Wheels;
- Fatigue Life;
- Free Vibration;
- Laser Applications;
- Nondestructive Tests;
- Reliability Engineering;
- Stress Distribution;
- Wave Front Reconstruction;
- Instrumentation and Photography