1.

Technical Paper
Technical Paper
1. TIME-FREQUENCY DOMAIN ANALYSIS OF VIBRATION SIGNALS FOR MACHINERY DIAGNOSTICS (IV) INTERPRETATION USING IMAGE PROCESSING TECHNIQUES
WANG, W.J. ; MCFADDEN, P.D.
Pub. info.: NASA Technical Reports.  pp.1-27,  1992.  National Aeronautics and Space Adminstration
2.

Technical Paper
Technical Paper
2. CALCULATING THE TIME DOMAIN AVERAGE OF GEAR VIBRATION DATA SAMPLED AT LESS THAN THE NYQUIST FREQUENCY
MCFADDEN, P.D.
Pub. info.: NASA Technical Reports.  pp.1-23,  1989.  National Aeronautics and Space Adminstration