Experimental Study on the Response of Hand-Transmitted Vibration from an EVA Power Tool

The objective of this paper is to accurately measure the vibration response tools and hands by simulating hand-held power tools, which are operated astronauts wearing extravehicular spacesuit gloves under microgravity conditions. total value daily exposure subject’s hand obtained. results show that opisthenar more sensitive frequency less than 200 Hz. After weighting, in composite state an unpressurized glove on 23.6% greater palm, for bare hand, percentage 25.1% same condition. Because operation time tightening a screw longer loosening, performed produces 15.7% mean palm loosening operation. transmissibility characterized weighted method unweighted 0.039 0.094, respectively. In comparison with hands, 16.3% less, indicating have effect reduction. research reveals law hand-transmitted caused coupling activities (EVA) gloves, provides novel further similar tests verification EVA tools.