Speckle-Interferometry in Investigation of Large-Size Gas Turbine Engine Vibrations

We developed a speckle-interferometer plant to investigate turbo-machinery wheels vibrations. We placed the plant optical arrangement and the object under investigation on a massive holographic plate. By using the plant we obtained frequencies and modes of aircraft engine wheel vibrations. To investigate the part vibrations, in working area conditions we designed another speckle-interferometer requiring no interferometer plate (table). With the help of this plant, we performed investigation of frequencies and modes of fan blades lot vibrations.

References

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