- Volume 27 Issue 5
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Evaluation of Dynamic Characteristics of Slipmeters with Force Platform
하중판을 이용한 미끄러짐 측정기의 동력학적 특성 평가
- Kim, Jung-Soo (Occupational Safety and Health Research Institute, KOSHA)
- 김정수 (한국산업안전보건공단 산업안전보건연구원)
- Received : 2012.03.19
- Accepted : 2012.08.23
- Published : 2012.10.31
The purpose of this study were to evaluate the dynamic characteristics of the portable slipmeters with respect to actual slipping and to compare their output with those of force platform. The selected slipmeters were commonly used devices for slipperiness measurement in situ floors. Their output quantity represented force (BOT-3000), loss of energy(British pendulum striker) and angle of inclination(English XL). The validity of these devices was studied with respect to actual slipping using a force platform. The precision of these devices was also evaluated with force platform. Based on dynamics of human subject behavior when slipping during normal walking, the all devices tested in this study showed poor performances: low built up ratio, low normal pressure, and long contact time prior to slip. Nevertheless, their results reasonably correlated with those calculated from the ground reaction forces generated by the operation of the selected slipmeters on the force platform although the absolute values of COF from these three devices could be quite different. Also the results showed good repeatability under the some test conditions.
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