Earticle

초록

영어

For sustainable forest management and the circular use of forest resources, it is essential not only to undertake afforestation and silviculture but also to perform timber-harvesting operations within a safe working environment. In Korea, the number of workers engaged in timber harvesting has been declining and aging, prompting active research into the mechanization of harvesting systems to enhance productivity. In particular, conventional chainsaw-based felling and forwarding operations are gradually being replaced by excavator-based processes. However, excavators operated in rough terrain during felling and forwarding operators to elevated whole-body vibration, which may precipitate musculoskeletal disorders and ultimately degrade work performance. Currently, research investigating operators’ whole‐body vibration exposure during individual task elements of excavator‐based forestry machinery remains scarce. Therefore, in this study we categorize the vibrations experienced by excavator operators during felling and forwarding into discrete sub-tasks and analyze their dynamic characteristics using parameters such as crest factor, maximum vibration amplitude, cumulative vibration exposure, and root-mean-square (RMS) acceleration. Finally, by applying the calculated TWRMS and TVDV values cumulative exposures to the health-guidance risk levels and comfort-response criteria defined in ISO 2631-1, we quantitatively evaluate the whole-body vibration exposure of operators performing excavator-based harvesting and forwarding operations. Excavator-based harvesting and forwarding tasks exhibited TWRMS and TVDV values exceeding ISO 2631-1 health thresholds during 4–8 hours of operation, inducing comfort ratings from “uncomfortable” to “very uncomfortable.” Forwarding showed higher exposure than felling, and attachments alone provided insufficient mitigation. Future research should explore remote-controlled harvesting to reduce operator vibration exposure.

키워드

저자

• Hong-Sik Ju [ Forest Technology and Management Research Center, National Institute of Forest Science ]
• Jae-Heun Oh [ Forest Technology and Management Research Center, National Institute of Forest Science ] Corresponding Author
• Hyeon-Seung Lee [ Forest Technology and Management Research Center, National Institute of Forest Science ]
• Gyun-Hyung Kim [ Forest Technology and Management Research Center, National Institute of Forest Science ]
• Ho-Seong Mun [ Forest Technology and Management Research Center, National Institute of Forest Science ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국산림공학회 학술대회

• 간기

  연간

• 수록기간

  2023~2025

• 십진분류

  KDC 526 DDC 634