ADHESIVE PROPERTIES OF ICE. PART 2

• Main Author: Jellinek, H. H.
• Other Authors: SNOW ICE AND PERMAFROST RESEARCH ESTABLISHMENT WILMETTE IL
• Format: Text
• Language: English
• Published: 1960
• Subjects: Snow; Ice and Permafrost; *ICE; ADHESION; STAINLESS STEEL; SHEAR STRESSES; FRICTION; SURFACE PROPERTIES; QUARTZ; STEEL 1050; Ice; permafrost
• Online Access: http://www.dtic.mil/docs/citations/AD0638344; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0638344

The results of shear tests on the system ice/stainless steel and ice/ optically flat fused quartz as a function of the rate of shear and roughness of the steel surface are reported. The adhesive strength decreased with decreasing roughness of steel surfaces, and the force-vs-time curves for smooth steel plates resembled those of 2 solids sliding over each other with a liquid layer between. This behavior was especially evident in the case of quartz. The adhesive strength as a function of rate of shear was linear for both ice/ stainless steel and ice/quartz, but there were indications of yield values. The results agree with the assumption of a liquid-like layer on ice. Ratios of viscosity coefficient to layer thickness were evaluated for both systems, and viscosity coefficients are estimated. The importance of interfacial free-energy considerations is pointed out. See also PB-132 565.