Accession Number:

ADP005546

Title:

Vibration Analysis by Speckle Interferometry,

Descriptive Note:

Corporate Author:

MOTOREN- UND TURBINEN-UNION G M B H MUNICH (GERMANY F R)

Personal Author(s):

Report Date:

1986-11-01

Pagination or Media Count:

9.0

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.

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE