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EHL (Elasto Hydrodynamic Lubrication)
/ Research
Applying Spacer Layer Imaging Method (SLIM) to Map EHD Contacts
Development of work recently carried out with the Tribology Group at Imperial College
SLIM - the Spacer Layer Imaging Method - is a natural development of the EHL Thin Film Measurement System. Instead of using a spectrometer to determine the wavelength of the light returned from the image of the EHL contact, SLIM uses a high resolution, high fidelity CCD colour camera to grab an image of the contact. The SLIM software uses a previously determined colourspace calibration to match the colours in the image to oil film thicknesses. The system can thus produce a film thickness map of the whole EHL contact in a few seconds. This makes it a unique tool for examining conditions such as parched or starved lubrication, grease lubrication, rough surface EHL and additive boundary film formation.
Please select from the list below:
- Three Stages of SLIM Analysis.
- Application of SLIM to produce 2D profile through centre of contact under different lubrication conditions.
- 3D film thickness map within contact during parched fluid film lubrication
- 3D film thickness map within contact during fully flooded lubrication
Publication: The Development of SLIM for Mapping Elastohydrodynamic Contacts - Tribology Transactions, 39, 1996.
1. Three Stages of SLIM Analysis
STAGE 1 Produce high resolution image using SLIM.
STAGE 2 Acquire high resolution digital image of contact.
STAGE 3 Use colour information to determine film thickness witnin contact
2. Application of SLIM to produce 2D profile through centre of contact under different lubrication conditions
3. 3D film thickness map within contact during parched fluid film lubrication
4. 3D film thickness map within contact during fully flooded lubrication
