TRIBOLOGY (Lubrication, Friction & Wear) MCE 454 – 3 Credits Course Policy University of Rhode Island Instructor: Prof. D.M.L. Meyer Email: [email protected] Prerequisites: Fluid Mechanics, and a Materials or Mechanics course 1. Homework: Assigned on most Tuesdays, and collected the following Tuesday. Assignments and solutions will be posted on Sakai website http://sakai.uri.edu . No late homework is accepted. 2. Exams: There will be two exams given during the semester, one approximately at the mid-term and the other near the end of the semester. No makeup exams will be given. 3. No electronic devices of any kind are allowed to be used during class lectures and exams except for a calculator. The use of a calculator on an electronic device (i.e. on an iphone), is not permitted. 4. Course Grade: Homework Exam 1 Exam 2 Slider Bearing Project 15% 30% 30% 25% 5. Course Grades are calculated on a scale of 0 to 100, with the following breakdown: A 90-100 A- 88-89 B+ 85-87 B 80-84 B- 78-79 C+ 75-77 C 70-74 C- 68-69 D+ 65-67 D 60-64 F <60 (Continued on next page) MCE 454 TRIBOLOGY (Lubrication, Friction & Wear) TENTATIVE Topic Schedule University of Rhode Island Prof. D.M.L. Meyer Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 TOPIC Introduction Bearing Selection Surface Contact Surface Profilometry Surface Profilometry (continued) FRICTION LUBRICATION: history, fluid mechanics review (conservation of mass and momentum) Reynolds Equation, film thickness Order-of-magnitude analysis, Navier-Stokes equations Non-dimensionalizing Long bearing approximation Exam No. 1 Short Bearing approximation Slider Bearing Project Slider Bearing Project (continued) Hydrostatic Bearings Hydrodynamic Bearings Elastohydrodynamic Lubrication (EHL) EHL Film Thickness: dimensionless groups, EHL applications WEAR: Adhesive Wear Abrasive Wear Fatigue & Delamination Wear Boundary Lubrication: lubricants, EP additives, corrosive wear and scuffing; three-body abrasion, erosive wear Exam No. 2 Bio-tribology and Applications Slider bearing competition