论文信息 - Ergonomic modification and evaluation of chain saw handle in wood cutting

Ergonomic modification and evaluation of chain saw handle in wood cutting

Vibration-induced stresses in wood cutting were reduced using a chain saw, through handle design, and the study was carried out in two phases such as pilot and main experiments. The pilot experiments were performed prior to main investigations, to record the postural angles of wrist, forearm and index finger and the vibration levels. Based on the findings of pilot experiment, three different angled handles were used for the investigations, with 30°, 60°, and 90° inclinations in the downward direction from the horizontal axis. The results show that the deviation in the torsion angle was lowest for the 30° handle and highest for the original handle, during chain saw operation. The angular deviation for radial/ulnar of the 60° handle is found to be greater than that of both the 30° and 90° handles, but was less than that of the original handle.

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