1. Experimentele Modale Analyse
LES 1 – THEORETISCHE INLEIDING
Patrick Guillaume
Tel.: 02/
EXPERIMENTELE MODALE ANALYSIS, LES 1

2. Overzicht cursus Theoretische basisbegrippen Meettechnieken
Niet-parametrische schattingen
Parametrische schattingen
Toepassingen
Gevoeligheidsanalyse
FE Model “updating”
“Substructuring”
“Operationele” modale analyse
“Structural Health Monitoring”
“Flight Flutter Testing”
EXPERIMENTELE MODALE ANALYSIS, LES 1

3. Introduction Simple plate response to sine sweep excitation
EXPERIMENTELE MODALE ANALYSIS, LES 1

4. Introduction Frequency Response Function
Overlay of time (blue) and FRF (red)
EXPERIMENTELE MODALE ANALYSIS, LES 1

5. Introduction Simple plate Sine Dwell Responses
Running-Mode Analysis (in time domain or frequency domain)
EXPERIMENTELE MODALE ANALYSIS, LES 1

6. Introduction FRF of a clamped beam
EXPERIMENTELE MODALE ANALYSIS, LES 1

7. Amplitude
Real
Phase
Imag
EXPERIMENTELE MODALE ANALYSIS, LES 1

8. Introduction Roving Hammer impact testing
Driving point FRF (a) and Cross FRF (b)
EXPERIMENTELE MODALE ANALYSIS, LES 1

9. Introduction
Mode shapes
EXPERIMENTELE MODALE ANALYSIS, LES 1

10. Introduction
Waterfall plot
EXPERIMENTELE MODALE ANALYSIS, LES 1

11. Introduction Roving hammer & roving response scenarios
EXPERIMENTELE MODALE ANALYSIS, LES 1

12. Introduction
FFT Analyzer
EXPERIMENTELE MODALE ANALYSIS, LES 1

13. Introduction Impact testing - Hammer tip influence
EXPERIMENTELE MODALE ANALYSIS, LES 1

14. Introduction Impact testing - Exponential window
EXPERIMENTELE MODALE ANALYSIS, LES 1

15. Introduction Shaker testing – Random with Hanning window
EXPERIMENTELE MODALE ANALYSIS, LES 1

16. Introduction Shaker testing – Burst random without window
EXPERIMENTELE MODALE ANALYSIS, LES 1

17. Introduction Shaker testing – Sine chirp without window
EXPERIMENTELE MODALE ANALYSIS, LES 1

18. Introduction Input-output measurement locations
EXPERIMENTELE MODALE ANALYSIS, LES 1

19. Introduction Mode 1 – Peak pick of FRF
EXPERIMENTELE MODALE ANALYSIS, LES 1

20. Introduction Mode 2 – Peak pick of FRF
EXPERIMENTELE MODALE ANALYSIS, LES 1

21. Introduction
Breakdown of an FRF
EXPERIMENTELE MODALE ANALYSIS, LES 1

22. Introduction Curve fitting – SDOF vs MOF
EXPERIMENTELE MODALE ANALYSIS, LES 1

23. Introduction Curve fitting of a typical FRF
EXPERIMENTELE MODALE ANALYSIS, LES 1