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syllabus of 3rd Semester B.Tech (Mechanical)
Posted Date: 17 Dec 2007 Resource Type: Articles/Knowledge Sharing Category: Syllabus
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Posted By: pankaj rana Member Level: Bronze
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SEMESTER - 3
ME-201 STRENGTH OF MATERIALS – I
Internal Marks: 40 L T P
External Marks: 60 3 1 0
Total Marks: 100
Course Objectives
1. Understand the concept of simple stress and strain.
2. Understand different types of direct stresses and strains.
3. Understand stress- strain diagram. Hookes law, Poisson’s ratio. Young’s
Modulus of Elasticity.
4. Compute simple stresses and strains in bars of uniform and varying sections
subjected to axial loads.
5. Derive relationship between the Elastic Moduli.
6. Compute stresses and strains in compound bars subjected to axial loads and
temperature variations.
7. Compute combined stresses and strains at a point across any plane in a two
dimensional system.
8. Understand the concept of principal planes and principal stresses.
9. Apply graphical and analytical methods to compute principal stresses and strain
and locate principal planes.
10. Derive mathematically the Torsion Equation.
11. Apply the Torsion equation to compute torsional stresses in solid and hollow shafts.
12. Compute principal stresses and maximum shear stresses in circular shafts subjected to combined stresses.
13. Analyze stresses in close- coiled helical springs.
14. Analyze stresses in thin shells and spheres subjected to internal pressure.
15. Apply different formulae to analyze stresses in struts and columns subjected to
axial loads.
16. Compute bending moments and shear forces at different sections of determinate
beam structures subjected to different types of loading and sketch their
distribution graphically.
17. Derive mathematically the relationship between the rate of loading, shear force
and bending moment at any section of a beam.
18. Understand the theory of simple bending.
19. Apply the theory of simple bending to compute stresses in beams of
homogenous and composite sections of different shapes.
20. Derive relationship between moment slope and deflection.
21. Use the above relationship and other methods to calculate slope and deflection
in beams.
22.Compute stresses in determine trussed frames and roof trusses.
Detailed Contents
1. Simple stresses and strains : Concept of stress and strain; St. Vernants
principle, stress and strain diagram, Hooke’s law, Young’s modulus, Poisson ratio,
stress at a point, stress and strains in bars subjected to axial loading. Modulus of
elasticity, stress produced in compound bars subject to axial loading.Temperature
stress and strain calculations due to applications of axial loads and variation of
temperature in single and compound bars. Compound stress and strains, the two
dimensional system; stress at a point on a plane, principal stresses and principal
planes; Mohr’s circle of stress; ellipse of stress and their applications. Generalized
Hook's Law, principal stresses related to principal strains
2. Bending moment and shear force diagrams: S.F and B.M definitions. BM and
SF diagrams for cantilevers, simply supported beams with or without overhangs and
calculation of maximum BM and SF and the point of contraflexure under the
following loads:
a) Concentrated loads
b) Uniformity distributed loads over the whole span or part of span
c) Combination of concentrated loads (two or three) and uniformly distributed loads
d) Uniformity varying loads
e) Application of moments
Relation between rate of loading, shear force and bending moment
3. Theory of bending stresses in beams due to bending: assumptions in the
simple bending theory, derivation of formula: its application to beams of rectangular,
circular and channel, I & T- sections,: Combined direct and bending stresses in
aforementioned sections, composite / flitched beams.
4. Torsion : Derivation of torsion equation and its assumptions. Applications of the
equation to the hollow and solid circular shafts, torsional rigidity, combined torsion
and bending of circular shafts principal stress and maximum shear stresses under
combined loading of bending and torsion, analysis of close-coiled-helical springs.
5. Thin cylinders and spheres : Derivation of formulae and calculation of hoop
stress, longitudinal stress in a cylinder, effects of joints, change in diameter, length
and internal volume; principal stresses in sphere and change in diameter and internal
volume
6. Columns and struts : Columns and failure of columns : Euler’s formuls; Rankine-
Gordon’s formula, Johnson’s empirical formula for axially loaded columns and their
applications.
7. Slope and deflection : Relationship between moment, slope and deflection,
Moment area method; method of integration; Macaulay’s method: Use of all these
methods to calculate slope and deflection for the following :
a) Cantilevers
b) Simply supported beams with or without overhang
c) Under concentrated loads, uniformly distributed loads or combination of
concentrated and uniformly distributed loads
Books
1. Strength of Materials by Ferdinand P Singer and Andrew Pytel,Harper and Row H.
Kogakusha Publishers, New York
2. Mechanics of Materials by SI Version, end edition by Ferdinand P. Beer and E
Russel Johnston (Jr); McGraw Hill, India
3. Mechanics of Materials-SI Version 2nd Edition by EP Popov, Prentice Hall India
4. Introduction to Solid Mechanics by D.H Shames, Prentice Hall Inc.
5. Elements of strength of Materials by Timoshenko and Young
6. Strength of Materials by DS Bedi; Khanna book Publishing Company, New Delhi.
7.Strength of materials by R.S Lehri and A.S. Lehri, S.K Kataria and Sons.
ME-211 STRENGTH OF MATERIALS LAB
Internal Marks: 30 L T P
External Marks: 20 0 0 2
Total Marks: 50
1. To perform tensile test in ductile and brittle materials and to draw stress-strain
curve and to determine various mechanical properties.
2. To perform compression test on C.I. and to determine ultimate compressive
strength.
3. To perform shear test on different materials and determine ultimate shear
strength.
4. To perform any one hardness test (Rockwell, Brinell & Vicker’s test) and
determine hardness of materials.
5. To perform impact test to determine impact strength.
6. To perform torsion test and to determine various mechanical properties.
7. Study of performance of Fatigue & Creep tests
8. To perform bending test on beam (wooden or any other material) and to
determine the Young's modulus and Modulus of rupture
9. To perform Torsion test and close coiled helical spring in tension and compression
and to determine modulus of rigidity/stiffness
10.Determination of Bucking loads of long columns with different end conditions.
ME-203 THEORY OF MACHINES-I
Internal Marks: 40 L T P
External Marks: 60 3 1 0
Total Marks: 100
Course Objectives
1. Understand the basic concepts of machines and mechanisms.
2. Understand/ compute the velocity and acceleration diagrams of all basic
mechanisms.
3. Draw velocity and acceleration diagrams of basic link mechanism.
4. Understand turning moment and crank effort diagram.
5. Understand the types of lower pairs.
6. Understand the types of cam & follower.
7. Understand the types of drives such as: belts, ropes and chains.
8. Derive the relationship between tension on tight and slack sides of belts and HP
transmitted by the belt.
9. Understand different types of brakes and dynamometers.
10. Applied different formulae to compute problems on brakes.
11. Understand the functions, types and characteristics of governors.
12.Apply the theory of governors to solve numerical problems.
Detailed Contents
1. Basic Concept of machines: link mechanism kinematic pair and chain, principles
of inversion, inversion of a four bar chain, slider-crank-chain, double slider-crankchain
and their inversions, kinematic pairs, Graphical (relative velocity vector and
instantaneous center methods) and Analytical methods for finding: Displacement,
velocity, and acceleration of mechanisms (including Corliolis components).
2.Lower Pairs: Universal joint, calculation of maximum torque, steering mechanisms including Ackerman and Davis approximate steering mechanism,engine indicator, Pentograph, Straight line mechanisms
3. Belts, Ropes and Chains : Material, types of drives, idle pulley, intermediate or
counter shaft pulley, angle and right angle drive, quarter turn drive, velocity ratio,
crowning shaft pulley, loose and fast pulley, stepped or cone pulleys, ratio of tension
on tight and slack sided of belts, HP transmitted by belts including consideration of
creep and slip, centrifugal tensions and its effect on HP transmitted. Use of gravity,
idle, flat, V-belts and rope materials. Length of belt, rope and chain drives, type and
cone type.
4. Cams: Types of cams and follower, definitions of terms connected with cams,
displacement velocity and acceleration diagrams for cam followers. Analytical and
Graphical design of cam profiles with various motions (SHM, uniform acceleration
and retardation, cycloidal). Analysis of follower motion for circular convex, tangent
cam profiles. Calculation of pressure angle.
5. Friction Devices: Concepts of frictions and wear related to bearing and clutches.
Types of brakes, principle of function of brakes of various types. Braking of front
and rear tyres of a vehicle, Problems to determine braking capacity, Types of
dynamometers,(absorption, transmission).
6. Flywheels: Turning moment and crank effort diagrams for reciprocating machines
Fluctuations of speed, coefficient of fluctuation of speed and energy, Determination
of flywheel mass and dimensions for engines and Punching Machines
7. Governors : Function, types and characteristics of governors, Watt, Porter and
Proell governor. Hartnell and Willson-Hartnell, spring loaded governors. Simple
numerical problems on these governors. Sensitivity, stability, isochronisms and
hunting of governors. Governor effort and power controlling force curve, effect of
sleeve friction.
Books
1. Jagdish Lal, Theory of Mechanisms & Machines, Metropolitan Book Co. Pvt.
Ltd, New Delhi.
2. S. S. Rattan, Theory of Machines, Tata McGraw Hill, New Delhi
3. Thomas Beven, Theory of Machines, Longman’s Green & Co., London
4. W. G. Green, Theory of Machines, Blackie & Sons, London
5.Shigley , Theory of Machines, Mcgraw Hill , New York
ME-205 ENGINEERING MATERIALS & METALLURGY
Internal Marks: 40 L T P
External Marks: 60 3 0 0
Total Marks: 100
Detailed Syllabus
1. Atomic structure of metals crystal structure, crystal lattice of (i) Body centered
cubic (ii) face centered cubic (iii) closed packed hexagonal, crystallographic
notation of atomic planes, polymorphism and allotropy, solidification of
crystallization (i) nuclear formation (crystal growth) (ii) crystal imperfection
Elementary treatment of theories of plastic deformation, phenomenon of slip
twinning, dislocation, identification of crystallographic possible slip planes and
direction in FCC, BCC, C.P., recovery, re-crystallization, preferred orientation
causes and effects on the property of metals.
2. Introduction to Engineering materials, their mechanical behaviour, testing and
manufacturing properties of materials, physical properties of materials,
classification of engineering materials.
3. General principles of phase transformation in alloys, phase rule and equilibrium
diagrams, Equilibrium diagrams of Binary system in which the componenets form
a mechanical mixture of crystals in the solid state and are completely mutually
soluble in both liquid state. Equilibrium diagrams of a systems whose
components have complete mutual solubility in the liquid state and limited
solubility in the solid state in which the solid state solubility deceases with
temperature. Equilibrium diagram of alloys whose components have complete
mutual solubility in the liquid state and limited solubility in solid state(Alloy with a
peritectic transformation) Equilibrium diagrams of a system whose components
are subject to allotropic change. Iron carbon equilibrium diagram. Phase
transformation in the iron carbon diagram (i) Formation of Austenite (ii)
Transformation of austenite into pearlite (iii) Martensite transformation in steel,
time temperature transformation curves.
4. Principles and applications of heat treatment processes viz. annealing,
normalizing hardening, tempering; harden ability & its measurement, surface
hardening processes. Defects in heat treatment and their remedies; effects
produced by alloying elements (Si, Mn. Ni. Cr. Mo. Wc. Al) on the structures and
properties of steel. Composition of alloy steels.
BOOKS
1. Engg. Physical Metallurgy Y. Lakhin, Mir Publishers
2. Heat treatment of metals B. Zakharv
3.Engineering Metallurgy V. Raghavan
ME-213 ENGINEERING MATERIALS & METALLURGY LAB
Internal Marks: 30 L T P
External Marks: 20 0 0 2
Total Marks: 50
1. Study of different Engineering materials and their mechanical properties.
2. To study the microstructures of the following materials
i) Hypo Eutectoid & Hyper Eutectoid steels.
ii) Hypoeutectic cast iron and hyper eutectic cast iron.
iii) Grey and white cast iron
iv) Non – ferrous metals i.e. Al. Mg. Cu. Ni. Son. And their alloys.
3. Study of iron carbon diagram and its engineering applications.
4. Annealing of steel, effect of annealing temperatures and time on hardness.
5. Study of microstructure and hardness of steel at different rates of cooling.
6. Hardening of steel, effect of quenching minimum and agitation of the medium on
hardness.
7. Effect of carbon percentage on the hardness of steel.
8. Harden ability test by Jominy’s End quench test.
9. Normalizing tempering of steel components.
10. To study the case hardening processes i.e. carburizing, Nitriding, cyaninding etc.
11.To study and construct the T-T- T diagram for steels.
ME-207 MACHINE DRAWING
Internal Marks: 40 L T P
External Marks: 60 1 0 6
Total Marks: 100
Examination Hours: 04
Course Objectives
1. Understand the principles and requirements of production drawings.
2. Understand the various symbols used in drawing.
3. Assemble and disassemble the following manually and using computer aided
drafting :-
a) Various types of couplings
b) Pipe fittings
c) Boiler mountings
d) Types of bearings
e) Few machine tool parts
f) Screw jack and drill press vice
4. Use bill of materials in each of the above drawings.
5. Record the surface finish of the parts and reason as well as interpretation of
drawing.
Detailed Contents
1. Principles of drawing, requirements of production drawing, , sectioning and
conventional representation, dimensioning, symbols of standard tolerances,
machining symbols, Introduction and familiarization of the code IS:296.
2. FASTENERS : Various types of screw threads, types of nuts and bolts, screwed
fasteners, welding joints and riveted joints
3. Assembly and Dis-assembly of the following manually and using computer aided
drafting.
a) Couplings: Solid or rigid Coupling, Protected type flange coupling, Pin type
flexible coupling, muff coupling, Oldham, universal coupling, claw coupling, cone
friction clutch, free hand sketch of single plate friction clutch.
b) Knuckle and cotter joints
c) Pipe and Pipe fittings: flanged joints, spigot an socket joint, union joint, hydraulic
an expansion joint
d) IC Engine Parts : Piston, connecting rod
e) Boiler Mountings : steam stop valve, feed check valve, safety valve, blow off
cock.
f) Bearings : swivel bearing, thrust bearing, plummer block, angular plumber block
g) Miscellaneous : Screw Jack, Drill Press Vice, Crane hook.
4. Drafting of simple mechanical components on computer.
NOTE :
Drawing Practice is to be done as per IS:296 code.
First angle projection to be used. Drawings should contain bill of materials and
should
illustrate finish. The syllabus given above indicates the broad outlines and the scope
of the subject to be covered. It is not necessary to cover all the drawing exercises of
the types of machine tools mentioned above.
Books
1. Text-book of Machine Drawing by V Lakshmi Narayanan and Mathur
2. Machine Drawing by PS Gill, BD Kataria and Sons, Ludhiana
3. Machine Drawing by ND Bhatt, Charotar publications
4.Machine Drawing by N Sidheshwar, Tata McGraw Hill
ME-209 APPLIED THERMODYNAMICS-I
Internal Marks: 40 L T P
External Marks: 60 4 1 0
Total Marks: 100
Course Objectives
1. Understand the types of steam generators, boiler mountings and accessories.
2. Compute boiler performance.
3. Understand the theory of Rankine cycle.
4. Apply the theory of Rankine cycle to solve numerical problems.
5. Understand various types of nozzles and their utility.
6. Derive the formulae for critical pressure and discharge and nozzle efficiency.
7. Apply the above formulae to solve simple numerical problems.
8. Understand the constructional details of impulse steam turbine.
9. Understand the theory of impulses turbine.
10. Compute impulse turbine performance using above theory.
11. Understand the working of rejection turbine.
12. Derive blade efficiency and calculate blade height.
13. Understand methods of attachment of blades to turbine rotor.
14. Understand the losses, labyrinth packing and governing of steam turbines.
15. Understand the functions, constructional details of various types of condensers.
16. Apply Dalton’s law to solve numerical problems.
17. Compute condenser performance parameters.
18. Understand effect of air leakage and its prevention in condensers.
19. Understand the use of compressed air and types of air compressors.
20. Study the operation of single and multi stage reciprocating compressors and
compute their performance parameters.
Detailed Contents
1. Combustion: Combustion problems in boiler and IC Engines, Stoichimetric (or
Chemically) air fuel ratio, analysis of products of combustion, conversion of
volumetric analysis into gravimetric analysis and vise-versa, actual weight of air
supplied, use of mols. For solution of combustion problems.
2. Properties of Steam and Steam Generators:
Pure substance constant pressure formation of steam, steam tables , constant
volume, constant pressure and isentropic processes, simple Rankine cycle. Steam
Generators Classification, Fire and water tube boilers; Description of Cochran,
Locomotive, Lancashire, Babcock and Wilcox boilers, Stirling Boiler, mountings and
accessories; Economiser, super heater etc. Modern high pressure boilers.
Characteristics of high pressure boilers, Advantages of forced circulation, steam
accumulators, boiler performance-equivalent evaporation, boiler efficiency.
3. Rankine Cycle:
Simple, methods of improving efficiency, Feed water heating (Bleeding), reheat
cycle, combined reheat regenerative cycle, Ideal working fluid – Binary vapour
cycle , combined power and heating cycles.
4. Nozzle:
Types and utility of nozzles, Flow of steam through nozzles, Critical pressure and
discharge, Area of throat and exit for maximum discharge, Effect of friction, Nozzle
efficiency, Supersaturated flow.
5. Impulse Steam Turbines:
General description, Pressure and velocity compounding, Velocity diagram and work
done, Effect of blade friction on velocity diagram, Stage efficiency and overall
efficiency, Reheat factor and condition curve.
6. Reaction Turbines:
Degree of reaction, velocity diagrams; Blade efficiency and its derivation; calculation
of blade height; back pressure and extraction turbines and congeneration; Economic
assesment.
Methods of attachment of blades to turbine rotor; losses in steam turbines;
Governing of steam turbines; Labyrinth packing.
7. Condensers:
Function Elements of condensing plant. Different types, Dalton’s law of partial
pressures applied to condenser problems; condenser and vacuum efficiencies.
Cooling water calculations.
Effect of air leakage, Methods to check and prevent air infiltration. Description of air
pump and calculation of its capacity.
8. Reciprocating Air Compressors
Use of compressed air in industry. Classification of air compressors, Operation of
single stage reciprocating compressors, Work input and the best value of index of
compression, Isothermal and polytropic efficiency.
Books
1. Heat Engineering by Dr Vasandani and Dr Kumar; Metropolitan Book Co. Pvt.
Ltd., Delhi
2. Thermal Engineering by PL Ballaney; Khanna Publishers, Delhi
3. Engineering Thermodynamics: Work and Hest Transfer By Rogers and Mayhew;
ELBS Publications
4. Thermodynamics and Heat Engines Vol. I and II by R Yadav; Central Publishers,
Allahabad
5. Steam Turbine Theory and Pratice by WAJ Keartan, ELBS Series
6.Applied Thermodynamics by TD Eastop & A Mc Conkey, ELBS Publications
PE-209 MANUFACTURING PROCESS –I
Internal Marks: 40 L T P
External Marks: 60 3 0 0
Total Marks: 100
CASTING PROCESSES
Introduction to metal casting types of patterns, their materials and allowances.
Moulding materials: Moulding sand compositions and moulding sand properties, sand
testing types of moulds, moulding machines cores core sands, types of cores, core
banking elements of gating system, and risers and their design. Cupola and its
operation charge calculations types of furnaces,
Casting processes: sand casting, shell mould casting investment casting, permanent
mould casting, full mould casting, vacuum casting. Die casting. Centrifugal casting,
continuous casting.
Casting defects, their causes and remedies.
Metallurgical considerations in casting, Solidification of metals and alloys, directional
solidification, segregation, nucleation and grain growth, critical size of nucleus,
casting
of copper alloys.
Cleaning and finishing of castings, Testing and Inspecting of castings.
WELDING
Welding introduction and classification of welding, processes, welding terminology,
general principles, welding positions, filler metals.Gas welding and gas cutting, principle, oxyacetylene welding equipment oxyhydrogen
welding. Flame cutting.Electric are welding. Principle, equipment, types- MIG, TIG submerged arc and others.Welding electrodes, classification and selection of electrodes, welding arc and its characteristics, arc stability, arc blow. Thermal effects on weldment. Heat affected zone grain size and its control. Resistance welding- principle and their types i.e. spot, seam, projection, upset and flash Thermit welding, electro slag welding, friction welding, plasma are welding electronbeam welding, atomic hydrogen hydrogen welding. Basic considerations in joint design,Welding defects, their cases and remedies.
Brazing, braze welding and soldering.
Books
1. Heine, R.W. C.R. Loper and P.C. Rosenthal, Principles of metal casting Mc
Graw Hill New York- 1967
2. Welding Technology by R.S. Parmar, Khanna Publishers.
PE-217 MANUFACTURING PROCESS – I Lab
Internal Marks: 30 L T P
External Marks: 20 0 0 2
Total Marks: 50
CASTING PRACTICALS
1. To study ingredients of molding sand and core sand.
2. To determine clay content in a moulding sand sample.
3. To determine moisture content in a moulding sample.
4. To find shatter index of moulding sand sample.
5. To conduct hardness test for mould and core.
6. To test tensile, compressive, transverse strength of moulding sand in dry
condition.
7. Determination of permeability of a moulding sand sample.
8. Measurement of grain finances number.
9. To study various features of cupola furnace and its charges calculations.
10. Prepare a green sand mould for any stable engg. component.
WELDING PRACTICALS
1. Specimen preparation and making of lap joint, Butt, T- joints with oxy- acetylene
gas welding.
2. Making of lap, Butt, T- joints etc. with electric arc welding.
3. Study of MIG welding equipment and making a weld joint in this process.
4. Study of TIG welding equipment and making a weld joint in this process.
5. Study of different process parameters in Friction welding and preparing a weld
joint by this process.
6. To study various welding equipments namely generators welding torch etc.
7. To study the resistance welding processes and prepare welded joint.
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