Vibration Analysis by Speckle Interferometry,
Abstract
The vibrational modes of complex systems can be visualized with high sensitivity by laser light speckle interferometry. Electronic speckle pattern interferometry (ESPI), in contrast to holography, does not use photo-chemical storage media but shows a live image of the vibrational modes created by the time-average method directly on a monitor screen. The particular advantage of this very useful and now almost conventional procedure of vibration analysis is demonstrated by two applications to aero-engine parts: an intermediate pressure compressor IPC blade and an impeller of a small centrifugal compressor.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1986
- Accession Number
- ADP005546
Entities
People
- Hartwig Knoell