Evaluation of floor slipperiness and influential analysis of gait
Project/Area Number |
24500668
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Rehabilitation science/Welfare engineering
|
Research Institution | Okayama University of Science |
Principal Investigator |
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
|
Keywords | 床のすべりやすさ / 動摩擦係数 / 静摩擦係数 |
Outline of Final Research Achievements |
A new evaluation method has been proposed for floor slipperiness using dynamic friction coefficient instead of static one. In the new tester, natural rubber sole attached to the artificial foot was pressed against the moving floor, and then friction force and vertical load were measured by strain gauge-type load cells. A wooden-made plate and P(Plastic)-tile were selected as the floor in dry, wet and oily surface conditions. The dynamic friction coefficients in dry condition were calculated to be 0.5-0.8. On the other hand, in wet and oily conditions, the coefficients were lower than the former. The static friction coefficient in wet was almost the same value of that in dry. Squeezing liquid film makes difference in coefficient between static and dynamic friction. This suggested that floor slipperiness at heel down should be used by dynamic friction coefficient under incremental vertical load.
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Report
(4 results)
Research Products
(5 results)