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University of Mumbai Semester 7 (BE Fourth Year) Tribology Revised Syllabus
University of Mumbai Semester 7 (BE Fourth Year) Tribology and their Unit wise marks distribution
Units and Topics
Syllabus
100 Module 1
101 Introduction to Tribology
- Introduction to Tribology,
- Tribology in design,
- Tribology in industry,
- economic aspects of Tribology,
- lubrication, basic modes of lubrication,
- lubricants, properties of lubricants-physical and chemical,
- types of additives,
- extreme pressure lubricants,
- recycling of used oils and oil conservation,
- disposal of scrap oil, oil emulsion.
- Types of sliding contact bearings,
- comparison of sliding and rolling contact bearings
200 Module 2
201 Friction and Wear
- Friction: Introduction, laws of friction,
- kinds of friction, causes of friction,
- friction measurement,
- theories of friction,
- effect of surface preparation.
- Wear: Types of wear, various factors affecting wear,
- measurement of wear,
- wear between solids and liquids,
- theories of wear.
300 Module 3
301 Hydrodynamic Lubrication
- Theory of hydrodynamic lubrication,
- mechanism of pressure development in oil film,
- two-dimensional Reynold„s equation,
- infinitely long journal bearing,
- infinitely short journal bearing,
- finite bearing Hydrodynamic thrust bearing: Introduction,
- flat plate thrust bearing,
- pressure equation,
- load, center of pressure,
- friction in tilting pad thrust bearing.
400 Module 4
401 Hydrostatic Lubrication
- Hydrostatic lubrication: Basic concept, advantages and limitations,
- viscous flow through rectangular slot,
- load carrying capacity and flow requirement of hydrostatic step bearing,
- energy losses, optimum design of step bearing.
- Compensators and their actions.
- Squeeze film lubrication: Introduction,
- circular and rectangular plates approaching a plane
500 Module 5
501 Elasto-hydrodynamic Lubrication and Gas Lubrication
- Elastohydrodynamic Lubrication: Principle and application,
- pressureviscosity term in Reynolds equation,
- Hertz theory.
- Ertel- Grubin Equation Gas lubrication: Introduction,
- merits and demerits, applications.
- Lubrication in metal working: Rolling, forging, drawing and extrusion.
- Bearing materials, bearing constructions, oil seals, shields and gaskets
600 Module 6
601 Surface Engineering
- Introduction to surface engineering,
- concept and scope of surface engineering,
- manufacturing of surface layers,
- solid surface geometrical,
- mechanical and physic chemical concepts,
- superficial -layer,
- development of concept,
- structure of superficial layer,
- general characteristics of superficial layer,
- obtained by machining,
- strengthening and weakening of superficial layer
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