Morlet-wave-based modal identification in the time domain

This research focuses on the time-domain identification of modal parameters using impact response excitation from signals with a relatively small dynamic range and high noise contamination (e.g., high-speed cameras). The information required to identify is limited contained mostly at beginning signal. In order perform an such response, following challenges have be overcome: good frequency-domain separation (for close modes), localization in time domain over-determination (to reduce uncertainty). To overcome these this introduces Morlet-wave method as extension damping method, which has already proven capable identifying short signals. Here, extended approach proposed uncertainty. identifies each mode shape separately 10 maximum 400 oscillations levels 0.02% 2% strong presence tested experimental example results are compared classical methodology.