Vibration Signal Processing

• Experimental Modal Analysis
  • Modal Analysis calculated by hands
• FRF Generation
  • FRF Generation (by nature frequency, modal damping ratio and modal stiffness)
  • Residue FRF (by nature frequency, modal damping ratio and residue of esch modals; one from X. W. Liu, another from Y. Altintas)
• Impact Testing
  • FFT Method
  • Impact Signals processing (Including FRF, Cross-power spectrum, Autospectrum, Coherence Calculation)
• Modal Parameter Identification
  • Rational Fraction Polynomial (a frequency method to identify modal parameters)
• Post-Processing
  • FFT (Zero padding)
• Pre-Processing
  • Trend Term Elimination
  • Data Smoothing