Purdue University

Purdue University

Mechanical Engineering
Tribology Laboratory

Andrew Cross

Ph.D. Student
M.S., Purdue University, West Lafayette, 2011
B.S., Oakland University, Rochester MI, 2009

Office Address:
585 Purdue Mall
ME Room# G005
West Lafayette, IN 47907

Office Phone: 765-494-0308
email: cross3@purdue.edu





Flow Visualization in a Surface Modified Thrust Washer

Surface modification has proven to be an effective technique to reduce friction and wear in sliding contacts. Micron scale surface features applied to a thrust washer pads are used to generate a hydrodynamic lubrication film separating the surfaces, reducing friction and eliminating surface contact. Novel investigative techniques are under development to measure the effectiveness of these surface features. Optical methods measure cavitation in the lubricant film and thin film sensor technology is being applied to measure the film pressure. Numerical simulations using both the Reynolds Lubrication Equation and the full Navier-Stokes Equations have been developed to corroborate experimental results and provide insight into bearing operational parameters that cannot be directly measured during experiments.

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