In the master's thesis, we determine the influence of the method of measurement, the distance from the source of vibration and the type of material used for the axe handle on psychophysical load and hand-arm vibration loads. The measurements were carried out in two parts, firstly during felling in the forest and secondly during an experiment with a pendulum, where we eliminated the effects of the characteristics of the tree and the cutter. In the research two axes with the same mass of the head (1,8 kg) and length of the handle (70 cm) were included, one with a beech handle and one with a composite handle. The results showed that the measurement method has a significant impact on the vibration load, as the strength of the vibration during felling on the mount is 669,29 m/s2 lower than on the axe handle. The vibration load decreases with distance, namely by 632,42 m/s2 between the handle and the finger, by 9,28 m/s2 between the finger and the wrist, and by 5,36 m/s2 between the wrist and the elbow. The vibration load during felling is 3,67 m/s2 less when using an axe with a composite handle than when using an axe with a beech wood handle. Based on the results, we can conclude that from the point of view of the vibration load the axe with a composite handle represents a suitable alternative to the axe with a wooden handle, and that when measuring the vibration loads, the accelerometer must be attached directly to the handle, otherwise the loads are often underestimated.
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