Stelling J, Dupuis H
Institut für Arbeits- und Sozialmedizin, Johannes Gutenberg-Universität, Mainz, Germany.
Int Arch Occup Environ Health. 1996;68(4):236-42. doi: 10.1007/BF00381434.
Under laboratory conditions the effects of single-axis and multi-axis hand-arm vibration exposure on several strain parameters were tested in up to 20 male subjects. As parameters of these acute effects, the biodynamic vibration behavior of the hand-arm system, the electrical activity of the most affected muscle groups, the skin temperature, the vibration sensitivity of the fingertips, and the subjective vibration sensation were measured. When comparing simulated three-axis vibration exposure with single-axis vibration exposure, synergistic effects in the form of an increasing reaction could be found. It could be proven that the vector sum of the frequency-weighted acceleration in the three axes represents the acute effects better than does the weighted acceleration in the main axis alone. This summation has to take into account the relatively lower effects of vibration in the x- or y-direction compared with the z-direction. On the basis of the experimental results a new proposal for frequency weighting of the three different axes and an energetic summation procedure are derived. Application of this knowledge in the International Standard ISO 5349 is proposed.
在实验室条件下，对多达20名男性受试者测试了单轴和多轴手臂振动暴露对几个应变参数的影响。作为这些急性效应的参数，测量了手臂系统的生物动力学振动行为、受影响最严重的肌肉群的电活动、皮肤温度、指尖的振动敏感性以及主观振动感觉。将模拟三轴振动暴露与单轴振动暴露进行比较时，可发现以反应增强形式出现的协同效应。可以证明，三个轴上频率加权加速度的矢量和比仅主轴上的加权加速度能更好地表示急性效应。这种求和必须考虑到与z方向相比，x或y方向振动的影响相对较小。基于实验结果，得出了关于三个不同轴频率加权的新建议和能量求和程序。建议将此知识应用于国际标准ISO 5349。
