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An analysis of heat transfer in the thin‐layer transducer used for the measurements of EHD contact parameters
Author(s) -
Hofman S.,
Bartz W. J.
Publication year - 1992
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.3010040204
Subject(s) - layer (electronics) , transducer , materials science , thermal conduction , heat transfer , boundary layer , thermal contact , mechanics , computation , composite material , acoustics , computer science , physics , algorithm
Thin‐layer transducers, which are mainly used for the measurement of the EHD contact parameters, have to be attached to an isolating layer separating it from the steel roller. The isolating layer, made of SiO x or Al 2 O 3, disturbs heat flow in relation to the real contact. This paper presents a solution for the system of two heat conduction equations for a two‐layer body: SiO x ‐steel. The boundary conditions reflect the real situation during the measurements carried out by means of these transducers. The solution was obtained for an assumed temperature distribution of the isolating layer surface. Computation results for two different temperature distributions of the surface and for various values of the SiO x ‐layer thickness are also presented.