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Author: Jean-Claude Tatinclaux Publisher: ISBN: Category : Friction Languages : en Pages : 36
Book Description
This report presents the results of tests of the ice friction coefficient mu sub k carried out during the May 1984 expedition of the F.S. Polarstern off the coast of Labrador. The test surfaces were Inerta-160-coated steel plates and bare steel plates, hand roughened and sandblasted. The main findings of the studies were: 1) columnar and granular sea ice showed no significant differences in friction coefficient; 2) for columnar ice, mu sub k was independent of ice crystal orientation with respect to test surface; 3) mu sub k was independent of normal pressure applied on ice sample; 4) mu sub k initially decreased with increasing relative velocity between the ice sample and the test surface and reached a steady value at higher speeds; 5) mu sub k increased with increasing surface roughness; 6) a wetting surface exhibited a higher friction coefficient than a non-wetting surface of the same or even higher roughness average.
Author: Jean-Claude Tatinclaux Publisher: ISBN: Category : Friction Languages : en Pages : 36
Book Description
This report presents the results of tests of the ice friction coefficient mu sub k carried out during the May 1984 expedition of the F.S. Polarstern off the coast of Labrador. The test surfaces were Inerta-160-coated steel plates and bare steel plates, hand roughened and sandblasted. The main findings of the studies were: 1) columnar and granular sea ice showed no significant differences in friction coefficient; 2) for columnar ice, mu sub k was independent of ice crystal orientation with respect to test surface; 3) mu sub k was independent of normal pressure applied on ice sample; 4) mu sub k initially decreased with increasing relative velocity between the ice sample and the test surface and reached a steady value at higher speeds; 5) mu sub k increased with increasing surface roughness; 6) a wetting surface exhibited a higher friction coefficient than a non-wetting surface of the same or even higher roughness average.
Author: Kathryn A. Forland Publisher: ISBN: Category : Friction Languages : en Pages : 54
Book Description
This study investigates the relative influence of various parameters on the kinetic friction coefficient mu sub k between ice and different surfaces. Friction tests were performed with urea-doped, columnar ice, studying the parameters of normal pressure, velocity, type of material, material roughness, ice orientation, ice hardness and test configuration. Tests were conducted by pulling a sample of ice over a sheet of material and by pulling a sample of material over an ice sheet. An ambient temperature of -1.5 + or - 1 deg C was maintained throughout, and the ice surface hardness was measured using a specially designed apparatus. The results of the friction tests revealed that the behavior of mu sub k with varying velocity was significantly influenced by the test configuration and material roughness. The magnitude of the kinetic friction coefficient was also affected by varying normal pressure, surface roughness and ice hardness. Additional guidelines for standardized ice friction tests and future investigations were recommended.
Author: Jean-Claude Tatinclaux
Author: Jean-Claude Tatinclaux
Author: Kathryn A. Forland
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Author: John B. Herbich
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Author: Cold Regions Research and Engineering Laboratory (U.S.)
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