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该文通过实验研究分析了振动对手指和手背皮肤温以及手皮肤电阻的影响.结果表明,手指皮肤温随着振动频率的增加而下降,在正常操作握力和27℃环境气温条件下,握持10min后,中指指尖温度平均下降约2.5℃.手背皮肤温随振动暴露时间的变化不明显,但是振动频率和加速度对手背皮肤温的影响非常显著.无振动的静态情况下,手背皮肤温比有振动时低,80Hz时手背皮肤温最高,并且加速度越大皮肤温越高.手指皮肤电阻在握持过程中都呈上升趋势,无振动静态握持时的皮肤电阻值比有振动时的大,27Hz时的皮肤电阻值相对较小.总体来看,当频率大于80Hz时,加速度较大时皮肤电阻变小.
In this paper, the influence of vibration on the skin temperature of the fingers and the back of the hand and the skin resistance of the hand are analyzed through experimental research. The results showed that the temperature of the finger skin decreased with the increase of the vibration frequency. Under the normal operating grip force and the ambient temperature of 27 ℃, the average temperature of the tip of the middle finger dropped about 2.5 ℃ after holding for 10 minutes. The skin temperature of the back of the hand did not change obviously with the time of vibration exposure, but the influence of vibration frequency and acceleration on the skin temperature of the back of the hand was very significant. In the static condition without vibration, the skin temperature of the back of hand is lower than that of the vibration, the skin temperature of the back of the hand is the highest at 80Hz, and the higher the skin temperature is, the higher the acceleration is. Finger skin resistance in the grip process all showed an upward trend, no vibration static skin resistance when the value is greater than when the vibration, skin resistance at 27Hz is relatively small. Overall, when the frequency is greater than 80Hz, the skin resistance becomes smaller when the acceleration is larger.