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The development and application of a new technique to measure the pressure distribution in an elastohydrodynamic contact is described. The method uses optical interferometry to measure the local compression of a thin elastic layer sandwiched between the loaded surfaces. The elastic-layer thickness is mapped as a line profile across the contact and the measured compression is calibrated to give a pressure distribution. The data are acquired through a single triggered image rather than a scanning system so that transient pressures can be measured. The current study is limited to static contacts, and pressure profiles are presented for a number of contact conditions. These include smooth and textured surfaces and entrained debris. The results are compared to theoretical predictions for smooth surfaces.
Presented at the STLE Annual Meeting in Toronto, Ontario, Canada May 17–2, 2004
Review led by Bob Errichello
ACKNOWLEDGMENTS
The research was funded by an EPSRC Platform Grant.
Notes
Presented at the STLE Annual Meeting in Toronto, Ontario, Canada May 17–2, 2004
Review led by Bob Errichello
