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Elastohydrodynamic film thickness measurements of artificially produced surface dents and groovesElastohydrodynamic (EHD) film thickness measurements using optical interferometry have been made of artificially produced dents and grooves under rolling and sliding conditions. These measurements are compared to stylus traces of the dent and groove profiles to determine the local deformation associated with micro-EHD pressure generation. The surface geometry associated with the dents and grooves is seen to become intimately involved in the lubrication process itself, creating local pressure variations that substantially deform the local surface geometry, particularly under sliding conditions. The rolling results have implications concerning surface initiated fatigue and the sliding results show clearly the EHD surface interactions that must occur prior to scuffing failure.
Document ID
19790039254
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Wedeven, L. D.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Cusano, C.
(Illinois, University Urbana, Ill., United States)
Date Acquired
August 9, 2013
Publication Date
October 1, 1978
Subject Category
Mechanical Engineering
Report/Patent Number
ASLE PREPRINT 78-LC-1A-1
Meeting Information
Meeting: American Society of Lubrication Engineers and American Society of Mechanical Engineers, Joint Lubrication Conference
Location: Minneapolis, MN
Start Date: October 24, 1978
End Date: October 26, 1978
Accession Number
79A23267
Distribution Limits
Public
Copyright
Other

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