20.500.12556/RUL-169046 Operator exposure to vibration and noise during steep terrain harvesting Winch-assisted harvesting has expanded considerably in recent years as it enables ground-based machines to work safely on steep slopes. To analyze operator exposure to whole-body and hand–arm vibration (WBV, HAV) and noise exposure (LAeq, LCpeak) during winch-assisted harvesting (TW) and harvesting without winch assistance (NTW), a field study using a Ponsse Scorpion King harvester and an Ecoforst T-winch traction winch was conducted. Vibrations were measured at three locations inside the cabin (seat, seat base/floor, control lever), while noise exposure was recorded both inside and outside the cabin. WBV exposure during work time operations was highest in the Y-direction, both on the seat (0.49–0.87 m/s2) and on the floor (0.41–0.84 m/s2). The WBV and HAV exposure levels were highest while driving on the forest and skid road. Exposure during the main productive time was significantly influenced by the harvesting system, diameter at breast height (DBH), and tree species. Noise exposure was higher, while WBV and HAV exposures on the seat, floor and control lever were lower during non-work time than during work time. The daily vibration exposure on the seat exceeded the EU action value, while LCpeak noise exposure surpassed the limit value of 140 dB(C) on all measured days. Noise and vibration exposure were constantly higher during TW than NTW harvesting but differences were small. Compared to other studies, the results show that harvesting on steep terrain increases noise and vibration exposure, while non-work time has the opposite effect on vibration and noise exposure. winch-assisted harvesting ergonomics safety at work T-winch exposure time structure sečnja s pomožnimi zunanjimi vitli ergonomija varnost pri delu t-vitel struktura časa izpostavljenosti true false true Angleški jezik Slovenski jezik Članek v reviji 2025-05-08 12:24:17 2025-05-08 12:24:21 2025-05-09 04:28:33 0000-00-00 00:00:00 2025 0 0 26 str. iss. 5, art. 741 Vol. 16 May 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 630*30 1999-4907 10.3390/f16050741 235190275 RAZ_Pajek_Luka_2025.pdf RAZ_Pajek_Luka_2025.pdf 1 2E9F7AA16DCD7744191A4455ECDEBA87 b95b15920057de629c22a5b37075fee9483c6944775967309226b03fa1798335 c8111e7d-2bf5-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=210174 https://www.mdpi.com/1999-4907/16/5/741 1 697b9139-2bf5-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=210173 Biotehniška fakulteta 0 0 0