Panzke K J, Balasus W
Int Arch Occup Environ Health. 1985;57(1):35-45. doi: 10.1007/BF00383544.
The object of the investigation was to find out possible non-linearities and dependencies of the impedance of the hand-arm-system on the exposure time. The measurements were made on four male test persons, with the vibrations being introduced parallel to the forearm axis and in a standing position with the arms stretched. The vibration accelerations were between 11 m/s2 and 36 m/s2, and the measuring handle had a weight of only 48 g. The impedance decreases in dependence on time at maximum spanning force without pressing force. After 1 min of exposure time, values of about 55% are reached at 40 Hz and values of about 80% at 20 Hz. The impedance with pressing force of 100 N without spanning force increases with time, most distinctly at 25 Hz. No influence of the vibration intensity could be seen. The compression-tension quotient was introduced as characteristic for the non-linearity. It is dependent on the frequency, the vibration acceleration and, with large vibration accelerations, also on the exposure time. The quotient is 1 ... 1.5 at vibration accelerations up to 10 m/s2, and 3 ... 4 at vibration accelerations up to 36 m/s2 and after 3 to 5 min exposure time.
该调查的目的是找出手臂系统阻抗对暴露时间可能存在的非线性关系和依赖性。测量是在四名男性测试对象身上进行的，振动沿前臂轴线方向引入，测试对象站立且手臂伸展。振动加速度在11 m/s²至36 m/s²之间，测量手柄重量仅为48 g。在无压力的最大伸展力作用下，阻抗随时间降低。暴露1分钟后，40 Hz时达到约55%的值，20 Hz时达到约80%的值。在无伸展力的100 N压力作用下，阻抗随时间增加，在25 Hz时最为明显。未观察到振动强度的影响。引入压缩-拉伸商作为非线性的特征。它取决于频率、振动加速度，在振动加速度较大时还取决于暴露时间。在振动加速度高达10 m/s²时，该商为1……1.5；在振动加速度高达36 m/s²且暴露3至5分钟后，该商为3……4。
