An Examination of Instantaneous Frequency as a Damage Detection Tool
Damage Characterization
Available Data
Framework
The Concept of Instantaneous Frequency
Instantaneous Frequency
Illustration of Instantaneous Frequency Selection using the Analytic Signal
Instantanoeus Frequency of a Linear Chirp
Mono-component & Multi-component signals
The Empirical Mode Decomposition
Application of EMD to a Simple Signal
Variance of the Instantaneous Frequency
The Hilbert Transform as a High Frequency Phase Selection
Numerical Example 1(a)
Example 1(b)
Phase Plots for IMF 1,2, and 3
Transfer Functions
Example 2(a)
Example 2(b)
Example 3
Final Remarks
Email: bvuran@lynx.neu.edu