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Tribology

Tribology. Instructor: Dr. Harish Hirani, Department of Mechanical Engineering, IIT Delhi. Tribology deals with design of fluid containment systems like seals and gasket, lubrication of surfaces in relative motion to achieve reduced friction and wear. The structure of the bearing and the nature of fluid flow determine the loads that can be supported. Modeling systems as hydrostatic, squeeze film and elasto-hydrodynamic lubrication will be studied as infinite and later finite structures. Gas (air) lubricated and rolling contact type motions with deformation at contact will be studied as special systems. (from nptel.ac.in)

Lecture 11 - Lubrication and Lubricants


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Introduction
Lecture 01 - Introduction
Lecture 02 - Interdisciplinary Approach and Economic Benefits
Friction
Lecture 03 - Friction
Lecture 04 - Friction Estimation
Lecture 05 - Friction Instability
Wear
Lecture 06 - Wear
Lecture 07 - Adhesive Wear
Lecture 08 - Wear Mechanisms
Lecture 09 - Wear Mechanisms (cont.)
Lecture 10 - Wear Analysis
Lubrication and Lubricants
Lecture 11 - Lubrication and Lubricants
Lecture 12 - Boundary Lubrication
Lecture 13 - Lubrication Mechanisms
Lecture 14 - Hydrodynamic Lubrication
Lecture 15 - Lubrication Classification
Lecture 16 - Solid and Semi Solid Lubricants
Lecture 17 - Liquid Lubricants
Lecture 18 - Lubricant Additives
Fluid Film Lubrication
Lecture 19 - Fluid Film Lubrication
Lecture 20 - Reynolds Equation
Lecture 21 - Solution of Reynolds Equation
Lecture 22 - Hybrid Solution Approach (to Solve Reynolds Equation)
Lecture 23 - Finite Difference Method to Solve Reynolds Equation
Lecture 24 - Viscosity Variation
Lecture 25 - Estimating Elastic Deformation
Lecture 26 - Thermo-Hydrodynamic Lubrication
Applications of Tribology
Lecture 27 - Applications of Tribology
Lecture 28 - Rolling Element Bearings
Lecture 29 - Rolling Element Bearings (cont.)
Lecture 30 - Rolling Element Bearings (cont.)
Lecture 31 - Selection of Rolling Element Bearings
Lecture 32 - Friction of Rolling Element Bearings
Lecture 33 - Bearing Clearance
Lecture 34 - Bearing Lubrication
Lecture 35 - Tribology of Gears
Lecture 36 - Friction and Lubrication of Gears
Lecture 37 - Friction and Lubrication of Gears (cont.)
Lecture 38 - Surface Fatigue of Spur Gears
Lecture 39 - Journal Bearings
Lecture 40 - Hydrostatic Bearings
Lecture 41 - Hydrodynamic Journal Bearings
Lecture 42 - Design of Hydrodynamic Journal Bearings