Fraser T M, Smiley A M, Mottershead B E
Aviat Space Environ Med. 1976 Jan;47(1):9-16.
Suitably prepared subjects were exposed to the vibration imposed by driving a personal-type all-terrain vehicle over a heavily plowed track. Acceleration was measured in the Z-axis at the seat of the vehicle, and in the X, Y, and Z axes at the hip and head of the subjects. Acceleration peaks, rates of onset, durations, and frequency ranges were determined and a spectral analysis conducted. Results showed that, for this vehicle under the test circumstances, the subjects respond with a low-frequency (less than 4 Hz) oscillation at approximately 0.5 Gz above nominal, on which are imposed numerous peaks of 1 to 5 G, or higher with rates of onset within the range measured, of 20 to 100 G/s. Although the measurement system did not conform to ISO (International Standards Organization) requirements, the results suggest that continued exposure would exceed the ISO 1-min limit for "health and safety."
将经过适当准备的受试者置于驾驶个人型全地形车在深耕过的赛道上行驶所产生的振动环境中。在车辆座椅处测量Z轴方向的加速度，在受试者的髋部和头部测量X、Y和Z轴方向的加速度。确定加速度峰值、起始速率、持续时间和频率范围，并进行频谱分析。结果表明，对于在测试环境下的这辆车，受试者会在高于标称值约0.5 Gz的情况下以低频（低于4 Hz）振荡做出反应，在此之上叠加有许多1至5 G或更高的峰值，其起始速率在测量范围内，为20至100 G/s。尽管测量系统不符合国际标准化组织（ISO）的要求，但结果表明持续暴露将超过ISO关于“健康与安全”的1分钟限值。
