ELEMENTS OF MECHANICAL ENGINEERING
Credits : 03
MODULE – I
Sources of Energy: Introduction and application of energy sources like fossil fuels, hydel, solar, wind, nuclear fuels and bio-fuels; environmental issues like global warming and ozone depletion:
Basic concepts of Thermodynamics: Introduction, states, concept of work, heat , temperature; Zeroth, 1 st , 2 nd and 3 rd laws of thermodynamics. Concept of internal energy, enthalpy and entropy (simple numericals).
Steam: Formation of steam and thermodynamic properties of steam (simple numericals).
(RBT Levels: L1, L2 & L3)
MODULE – II
Boillers: Introduction to boilers, classification, Lancashire boiler, Babock and Wilcox boiler. Introduction to boiler mounting and accessories (no sketches).
Turbines: Hydraulic Turbine – Classification and specification, Principles and operation of Pelton wheel turbine, Francis turbine and Kaplan turbine (elementary treatment only).
Hydraulic Pumps: Introduction, Classification and specification of pumps, reciprocating pump and centrifugal pump, concept of cavitation and priming.
(RBT Levels: L1, L2 & L3)
MODULE –III
Internal Combustion Engines
Classification, I.C Engines parts, 2 and 4 stroke petrol and 4 – stroke diesel engines. P – V diagrams of Otto and Diesel cycles. Simple problems on indicated power, brake power, indicated thermal efficiency, brake thermal efficiency, mechanical efficiency and specific fuel consumption.
Refrigeration and Air conditioning
Refrigeration – definition – Refrigerating effect, Ton of Refrigeration, Ice making capacity, COP, relative COP, /unit of Refrigeration, Refrigerants, Properties of Refrigerants, List of commonly used Refrigerants. Principle and working of vapor compression refrigeration and vapor absorption refrigeration. Domestic Refrigerator.
Principles and applications of air conditioners, window and split air conditioners.
(RBT Levels: L1, L2 & L3)
MODULE –IV
Properties, Composition and Industrial Applications of engineering materials
Metals – Ferrous; Cast iron, tool steels and stainless steels and nonferrous; aluminium, brass, bronze. Polymers – thermos plastics and thermosetting polymers Ceramics – Glass, optical fiber glass, cermets. Composites – fiber reinforced composites, Metal Matrix Composites Smart materials – Piezoeelectric material, shape memory alloys, semiconductors and insulators.
Joining Processes: Soldering, Brazing and Welding
Definitions – Classification and, methods of soldering, brazing and welding. Brief description of arc welding, oxy-acetylene welding, TIG welding, and MIG welding.
Bell drives
Open & crossed belt drives, Definitions – slip creep, velocity ratio, derivations for length of belt in open and crossed belt drive, ratio of tension in flat belt drives, advantages and disadvantages over belt drives, simple numerical problems on velocity ratio.
Gear drives
Types – spur helical, bevel, worm and rack and pinion. Velocity ratio, advantages and disadvantages over belt drives, simple numerical problems on velocity ratio.
(RBT Levels: L1, L2 & L3)
MODULE - V
Lathe – Principle of working a center lathe. Parts of a lathe. Operations on lathe – Turning, Facing, Knurling, Thread Cutting, Drilling, Taper turning by Tailstock offset method and Compound slide swiveling method, Specification of Lathe.
Milling Machine – Principle of milling, types of milling machines. Working of horizontal and vertical milling machines. Milling processes – plane milling, end milling, slot milling, angular milling, form milling, straddle milling, and gang milling. (Layout sketches of the above machines need not be dealt. Sketches need to be used only for explaining the operation performed on the machines)
Introduction to Advanced Manufacturing Systems
Computer Numerical Control (CNC): Introduction, components of CNC, open loop and closed loop systems, advantages of CNC, CNC Machining centers and Turning centers.
Robots: Robot anatomy, joints and links, common robot configurations. Applications of Robots in material handling, processing and assembly and inspection.
(RBT Levels: L1, L2 & L3)
Textbooks:
1. Elements of Mechanical Engineering, K.R. Gopalaakrishna, Subhas Publications, Bangalore, 2008.
2. Elements of Mechanical Engineering, Vol. – 1 & 2, Hajra Choudury media Promoters, New Delhi, 2001
3. A Text book of Elements of Mechanical Engineering, S.Trymbaks Murthy, 3 rd revised edition 2006, I.K. International Publishing House Pvt. Ltd., New Delhi.
Reference Books:
1. Elements of Mechanical Engineering, R.K. Rajput, Firewall Media, 2005.
2. Elements of Mechanical Engineering, Dr.A.S. Ravindra, Best Publications, 7 th edition, 2009.
3. CAD/CAM/CIM, Dr.P.Radhakrishnan, 3 rd edition, New Age International Publishers, New Delhi.
4. Introduction to Robotics: Mechanics and Control, Craig, J.J., 2 nd Ed.Addison- Wesley Publishing Company, Readong, MA, 1989.
5. Introduction to Engineering Materials, BK Agarwal, Tata McGrawHill Publications, New Delhi.
6. Thermal Science and Engineering, Dr.D.s. Kumar, S.K. Kataria &; sons Publications, New Delhi.