An effective means of studying lubricant film rheology within EHL contacts is by detailed mapping of the temperature of the fluid and the bounding surfaces within the lubricated contact area. This provides a way of directly measuring the rheology of lubricant films under true EHL conditions. Furthermore, temperature measurement itself provides a very effective means of testing and validating computer simulations. In the current work, the experimental approach initially developed by Sanborn and Winer [1] and then by Spikes and co-workers [2], has been advanced to include a high specification infrared (IR) camera and microscope. This is a similar approach to that taken by Yagi and Kyogoku [3]. As well as the instantaneous capture of full field measurements, this has the advantage of increased sensitivity and higher spatial resolution than previous systems used. The increased sensitivity enables a much larger range of testable operating conditions; namely lower loads, speeds and reduced sliding. In addition, the range of test lubricants can be extended beyond high shearing traction fluids. One additional advantage of instantaneous full field measurements is that the weak infrared optical interference caused by the film can be observed and can used to exactly locate the centre of the contact in the resulting temperature maps. These new possibilities have been used to investigate and compare the rheological properties and compression cooling effects exhibited by a PAO, a group II mineral oil, and a traction fluid.
Skip Nav Destination
STLE/ASME 2008 International Joint Tribology Conference
October 20–22, 2008
Miami, Florida, USA
Conference Sponsors:
- Tribology Division
ISBN:
978-0-7918-4336-9
PROCEEDINGS PAPER
Improved Temperature Mapping of EHL Contacts
T. Reddyhoff,
T. Reddyhoff
Imperial College London, London, UK
Search for other works by this author on:
H. A. Spikes,
H. A. Spikes
Imperial College London, London, UK
Search for other works by this author on:
A. V. Olver
A. V. Olver
Imperial College London, London, UK
Search for other works by this author on:
T. Reddyhoff
Imperial College London, London, UK
H. A. Spikes
Imperial College London, London, UK
A. V. Olver
Imperial College London, London, UK
Paper No:
IJTC2008-71082, pp. 265-267; 3 pages
Published Online:
June 5, 2009
Citation
Reddyhoff, T, Spikes, HA, & Olver, AV. "Improved Temperature Mapping of EHL Contacts." Proceedings of the STLE/ASME 2008 International Joint Tribology Conference. STLE/ASME 2008 International Joint Tribology Conference. Miami, Florida, USA. October 20–22, 2008. pp. 265-267. ASME. https://doi.org/10.1115/IJTC2008-71082
Download citation file:
7
Views
Related Proceedings Papers
Related Articles
Direct Visualization of Molecularly Thin Lubricant Films on Magnetic Disks by Ellipsometric Microscopy With a White Light Source
J. Tribol (October,2004)
A Simple Thermal Correction for Large Spin Traction Curves
J. Mech. Des (April,1981)
Related Chapters
Crack(s) in a Rod or a Plate by Energy Rate Analysis
The Stress Analysis of Cracks Handbook, Third Edition
EVALUATION OF THERMAL PROBE COOLING EFFECT BASED ON PIPELINE PARALLEL OPTICAL CABLE
Pipeline Integrity Management Under Geohazard Conditions (PIMG)
Simulation of Multi-Beam Interference Newton's Rings
International Conference on Information Technology and Computer Science, 3rd (ITCS 2011)