Portable speckle – interferometer for vibrating subject vibration modes study without special test rig

Аuthors

Zhuzhukin A. I.

Abstract

The article deals with the development of portable speckle – interferometer not needing complicated adjustment allowing subject vibration characteristics study without using interferometric table. Speckle – interferograms of compressor stage 7 blade vibration modes obtained with smooth base wave interferometer and those ones obtained with portable speckle – interferometer were compared. Identity of obtained results is shown. Vibration characteristics of parts of compressor wheel and turbine nozzle vane unit were investigated with the portable speckle – interferometer.

Keywords:

vibration modes; speckle – interferometry; laser speckles; holographic interferometry.

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