Title:
Evaluation of Frictional Characteristics of Precision Machined Surfaces

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dc.contributor.advisor Melkote, Shreyes N.
dc.contributor.author Kalil, Richard Charles, Jr. en_US
dc.contributor.committeeMember Danyluk, Steven
dc.contributor.committeeMember Kurfess, Tom
dc.contributor.department Mechanical Engineering en_US
dc.date.accessioned 2005-03-02T22:15:37Z
dc.date.available 2005-03-02T22:15:37Z
dc.date.issued 2004-06-07 en_US
dc.description.abstract Precision surface finishes are used in a wide variety of applications. From bearing races and rolling elements to parallel slide ways, the frictional characteristics of these surfaces are critical to the performance of the products. Experimental trial and error has shown that certain surfaces outperform others in certain applications, but the specific surface characteristics that make this true have yet to be fully understood. The research goal was to develop an apparatus that can test the coefficient of rolling/sliding friction of different precision machined surfaces and to combine this data with topographic analysis of the surfaces to correlate specific 3-D parameters with the frictional performance of a surface. The sample treatments consisted of four different surface textures (hard-turned, ground, honed and isotropic finish) and four different relative surface speeds. By monitoring the torque in the sample-mounting shaft under lubricated conditions the coefficient of rolling/sliding friction of each surface was found. Utilizing white light interferometry measurement of the surfaces, a highly detailed map of each surface was obtained. Using different characteristic values of each machined surface (RMS roughness, asperity density, lay direction, etc.), the frictional behavior of the surfaces were compared to the surface characteristics yielding insight into the relationship between surface finish and friction in rolling/sliding contact. Friction coefficient was found to correlate most strongly with RMS roughness (Sq) and density of surface summits (Sds). These parameters govern mechanical interference of asperities and surface adhesion respectively. These findings suggest that friction coefficients of surfaces could be optimized through manipulation of three-dimensional surface parameters. en_US
dc.description.degree M.S. en_US
dc.format.extent 2288279 bytes
dc.format.mimetype application/pdf
dc.identifier.uri http://hdl.handle.net/1853/5000
dc.language.iso en_US
dc.publisher Georgia Institute of Technology en_US
dc.subject Friction en_US
dc.subject Rolling/sliding
dc.subject Surface characterization
dc.title Evaluation of Frictional Characteristics of Precision Machined Surfaces en_US
dc.type Text
dc.type.genre Thesis
dspace.entity.type Publication
local.contributor.advisor Melkote, Shreyes N.
local.contributor.corporatename George W. Woodruff School of Mechanical Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication e78c9d4f-2d4a-4337-9739-f9179a9fd7fb
relation.isOrgUnitOfPublication c01ff908-c25f-439b-bf10-a074ed886bb7
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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