20.500.12556/RUL-142964 Damping identification based on a high-speed camera Monitoring distant structures using a high-speed camera frequently relies on modal parameters. Even with high-dynamic-range sensors (e.g., accelerometers) damping identification is not trivial. With high-speed cameras the dynamic range is relatively small and contaminated with a relatively high level of noise. Image-based techniques have the advantage of providing contact-less full-field structural identification. While the damping is a modal parameter and theoretically not spatially dependent, this study looks at the potential to use the spatial over-determination, provided by the high-speed camera to increase the accuracy of the contact-less damping identification. High-speed cameras provide thousands of measurement locations, and identify the damping with noise-resistant methods like those based on the Continuous Wavelet Transform is numerically demanding. This research is built on the Morlet Wave Damping Identification method, which is based on the Continuous Wavelet Transform, but is also significantly faster. Finally, the full-field damping parameters were averaged with regard to the identified deflection shapes. The theory is extended with an experiment, where damping is identified for a simple structure at frequencies up to 2.5 kHz. It was found that the proposed method resulted in damping identification that was comparably accurate to the damping identified from high-dynamic-range and low-noise piezoelectric accelerometers. This research confirms that damping can be accurately identified from high-speed-camera measurements, only. Morlet-wave damping spatial distribution full-field Morletov valček dušenje prostorska porazdelitev polno polje true false true Angleški jezik Slovenski jezik Članek v reviji 2022-12-06 14:06:11 2022-12-06 14:06:17 2022-12-07 03:32:29 0000-00-00 00:00:00 2022 0 0 12 str. Vol. 166, art. 108485 Mar. 2022 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-03-01 2024-03-01 531/534 0888-3270 10.1016/j.ymssp.2021.108485 132558595 Tomac,_Slavic_-_Damping_identification_based_on_a_high-speed_camera.pdf Tomac,_Slavic_-_Damping_identification_based_on_a_high-speed_camera.pdf 1 5D7F679F680998D985BE25266BB7B795 992edfbb504dce3804d3fcc14be0102f11f1a2e7a70d8dbe78d7b85d96114861 6d670d88-7567-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=164554 https://www.sciencedirect.com/science/article/pii/S0888327021008281 1 9df0d598-7566-11ed-9c94-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=164553 Fakulteta za strojništvo 0 0 0