Volume 36 Issue 11
Nov.  2010
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Liu Heqing, Ding Li, Yuan Xiugan, et al. EVA glove strength under low temperature and pressure[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(11): 1311-1314. (in Chinese)
Citation: Liu Heqing, Ding Li, Yuan Xiugan, et al. EVA glove strength under low temperature and pressure[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(11): 1311-1314. (in Chinese)

EVA glove strength under low temperature and pressure

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  • Corresponding author: Liu Heqing
  • Received Date: 20 Oct 2009
  • Publish Date: 30 Nov 2010
  • In order to study the effects of combined stress of glove pressure and low temperature on astronaut operation strength during extravehicular activity (EVA), the maximum grip strength and grip fatigue were selected as two indicators to evaluate the strength of manual performance. Fatigue was evaluated by the work done in grip test. The low-temperature and pressured experimental conditions in the grip test were simulated in the low-temperature simulation cabin using the liquid nitrogen and the vacuum pump. The results indicate that wearing glove has very significant effect on the maximum grip strength and grip fatigue. Pressure(29.6kPa,39.2kPa) has significant influence on the maximum grip strength compared with wearing glove under normal temperature and pressure. Low temperature has no significant influence on the maximum grip strength. However, pressure and low temperature have particularly significant influence on grip fatigue. Under the combined stress of both pressure and low temperature, the maximum grip strength and grip fatigue will be further influenced significantly. The combined stress of pressure and low temperature in space seriously reduces the strength of the astronauts. The effects of combined stresses should be considered in researches of the man-glove system during extravehicular operations.

     

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