NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Enhancement to Non-Contacting Stress Measurement of Blade Vibration FrequencyA system for turbo machinery blade vibration has been developed that combines time-of-arrival sensors for blade vibration amplitude measurement and radar sensors for vibration frequency and mode identification. The enabling technology for this continuous blade monitoring system is the radar sensor, which provides a continuous time series of blade displacement over a portion of a revolution. This allows the data reduction algorithms to directly calculate the blade vibration frequency and to correctly identify the active modes of vibration. The work in this project represents a significant enhancement in the mode identification and stress calculation accuracy in non-contacting stress measurement system (NSMS) technology when compared to time-of-arrival measurements alone.
Document ID
20120000461
Acquisition Source
Glenn Research Center
Document Type
Other - NASA Tech Brief
Authors
Platt, Michael
(Mechanical Solutions, Inc. NJ, United States)
Jagodnik, John
(Mechanical Solutions, Inc. NJ, United States)
Date Acquired
August 25, 2013
Publication Date
September 1, 2011
Publication Information
Publication: NASA Tech Briefs, September 2011
Subject Category
Instrumentation And Photography
Report/Patent Number
LEW- 18602-1
Distribution Limits
Public
Copyright
Public Use Permitted.
No Preview Available