Evaluation of the effect of chainsaw vibration on user's hand and arm during log bucking operations

Document Type : Research Paper

Authors

1 M.Sc. student, Forest engineering, Faculty of natural resources, University of Tehran, Karaj, Iran

2 Associate Prof., Department of forestry and forest economics, Faculty of natural resources, University of Tehran, Karaj, Iran

3 Professor, Department of forestry and forest economics, Faculty of natural resources, University of Tehran, Karaj, Iran

4 Assistant Prof., Department of wood and paper science & technology, Faculty of natural resources, University of Tehran, Karaj, Iran

Abstract

Occupational vibration is considered as one of the most important occupational problems in chainsaw work in a forestry environment. The aim of this study was to measure the hand-arm vibration of the chainsaw operator in the bucking operation of Persian ironwood, popular, and alder logs in the Kheyrud Educational and Research Forest. In this study, bucking operation of two trees of Persian ironwood, popular, and alder species with different wood density was measured in a transverse section. Vibration measurement was carried out using a SVANTEK vibration device at the same time in X, Y and Z directions. The averaged vibrational intensity indices (aeq), total ahv chainsaw vibration, vibration transmission coefficient (Tr and daily exposure period) (A8) was used to assess the vibration of the chainsaw. The results of this study showed that the mean averaged vibration ratio of the averaged jet propulsion (aeq) in all three axes ((X, Y, Z more) Is a species of poplar and alder, and in Persian ironwood species, there is a significant increase in direction X and direction Z is the least amount of vibration (P

Keywords

References

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Iranian Journal of Wood and Paper Industries
Volume 9, Issue 4
March 2019
Pages 471-483

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