20.500.12556/RUL-132774 On the application of laser vibrometry to perform structural health monitoring in non-stationary conditions of a hydropower dam This paper presents the first application of the Laser Doppler Vibrometer (LDV) in non-stationary conditions within a hydropower plant powerhouse. The aim of this research is to develop a methodology to include non-contact vibration monitoring as part of structural health monitoring of concrete dams. We have performed in-situ structural vibration measurements on the run-of-the-river Brežice dam in Slovenia during the start-up tests and regular operation. In recent decades, the rapid development of laser measurement technology has provided powerful methods for a variety of measuring tasks. Despite these recent developments, the use of lasers for measuring has been limited to sites provided with stationary conditions. This paper explains the elimination of pseudo-vibration and measurement noise inherent in the non-stationary conditions of the site. Upon removal of the noise, fatigue of the different structural elements of the powerhouse could be identified if significant changes over time are observed in the eigenfrequencies. The use of laser technology is to complement the regular monitoring activities on large dams, since observation and analysis of integrity parameters provide indispensable information for decision making and maintaining good structural health of ageing dams. vibration laser doppler vibrometry concrete dam accelerometers dam monitoring true false true Angleški jezik Ni določen Članek v reviji 2021-11-03 08:53:59 2021-11-03 08:54:06 2022-09-12 04:13:39 0000-00-00 00:00:00 2019 0 0 13 str. iss. 17, art. 3811 Vol. 19 2019 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 626/627 1424-8220 10.3390/s19173811 8873313 RAZ_Klun_Mateja_2019.pdf RAZ_Klun_Mateja_2019.pdf 1 A718EC31057D093700F78CD223369C84 4a069dc84c54a4bb3ec1027dd575d67630bc821808d6dafd26e19c41b8fd0cba 8963efaa-3c7b-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=150469 https://www.mdpi.com/1424-8220/19/17/3811 1 2d97b076-3c7b-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=150468 Fakulteta za gradbeništvo in geodezijo 0 0 0