1st module.pdf
TRANSCRIPT
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Amity School of Engineering & Technology
MECHANICAL ENGINEERING
ELEMENTS OF
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Amity School of Engineering & Technology
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EME (BTECE103)
Usefulness, Significance
Introduction, Orientation
Syllabus, Books, Class policy
Learning target/objective
Science of Teaching (Pedagogy)
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Amity School of Engineering & Technology
3 MECH+CSE+ECE
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Amity School of Engineering & Technology
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Syllabus
04 module, 15 week, 31h (25 actual)
Delivery
Lesson plan, Methods, & Books
Science of teaching (Pedagogy)
Read, Note, Study, Revise, Demand
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Syllabus
Module I : Fundamental Concepts
Module II : Stress & Strain Analysis
Module III: Castings & Forgings
Module IV: Welding, Sheet metal
15 weeks, 31h (25 practically)
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M I: Fundamental Concepts Definition Thermodynamics, system, surrounding and universe, phase, concept of continuum, macroscopic & microscopic point of view, Thermodynamic equilibrium.
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Module I: Fundamental Concepts Therm. Dyn. equilibrium, property, state, path, process, cyclic process, Zeroth, first/second law of thermo dynamics, Carnot Cycle, Introduction to I.C. Engines two & four stoke S.I. and C.I. engines. Otto cycle, Diesel cycle.
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Module II: Stress & Strain Analysis
Simple stress & strain introduction, normal shear, and stresses-strain diagrams for ductile and brittle materials. Elastic constants, one-dimensional loadings of members of varying cross-section, Strain Energy,
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Module II: Stress & Strain Analysis
Properties of material-strength, elasticity, stiffness, malleability, ductility, brittleness, hardness and plasticity etc; Concept of stress and strain, stress strain diagram, tensile test, impact test and hardness test.
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Module III: Castings & Forgings Introduction of casting, pattern, mould making procedures, sand mould casting, casting defects, allowances of pattern. Forging-introduction, upsetting & drawing out, drop forging, press forging & machine forging.
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M IV: Welding & Sheet metal working
Introduction of welding processes, classification, gas, arc, and resistance welding.
Introduction to sheet metal shop, Shearing, trimming, blanking, piercing, shaving, notching, stretch forming, nibbling coining, embossing and drawing.
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Text Book & Reference
Engineering thermodynamics, by P.K. Nag,
Thermal Engineering, by D.S. Kumar.
Thermal Engineering by PL Ballaney
Engineering Thermodynamics: Work and Heat Transfer, by Rogers and Mayhew, Heine, R.W. C.R. Loper and P.C. Rosenthal,
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Text Book & Reference
Principles of metal casting Welding Technology by R.S. Parmar,
Thermodynamics and Heat Engines Volume-I, by R. Yadav
Internal Combustion Engine, Ganesan V.
I.C. Engine, Mathur, M.L. and Sharma R.P.
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Compo-nents
A CT S/V/Q HA EE
Weigh- tage (%)
5 10 8 7 70
Examination Scheme: CT: Class Test, HA: Home Assignment, S/V/Q: Seminar/Viva/Quiz, EE: End Semester Examination; Att: Attendance Examination Scheme: Examination Scheme: Examination Scheme:
Examination scheme
CT: Class Test, HA: Home Assignment, S/V/Q: Seminar/Viva/Quiz, EE: End Semester Examination; Att: Attendance
Attendance , Class Test, Home Assignment,
Seminar/Viva/Quiz, End Semester Exam.
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Discipline
Response, In-time, Self management
Lecture Notes in class
Date, Time, No., Half to two page.
Separate Notebook 4each subject.
Performance best of all
Involve, Plan, Study, Evaluate, Improve
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Lesson plan (27th Aug to 19th Dec 14)
04 Module, 15 week, 31h (25 effective)
Module I 06 sessions (1 evaluation)
Module II 07 sessions (2 evaluation)
Module III 05 sessions (1 evaluation)
Module IV 05 sessions (1 evaluation)
Numerical 03 sessions (all revision)
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UNIVERSAL
VERTICAL
LAUNCHER
Fundamental Concepts
HEAT creating FORCE
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NEXT CLASS
Fundamental Concepts Thermodynamics, system,
surrounding, universe, phase, concept of continuum
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Thermodynamics is a Greek word which means flow of heat in physical and chemical reactions.
Thermodynamics is a branch of science which deals with study of different forms of energy and their interconversions.
It deals with energy changes in physical and chemical processes.
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Useful to predict whether any chemical reaction can occur under specified conditions
Helps to predict the extent of chemical reaction before equilibrium is reached
Used to derive important laws like Law of equilibrium
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Classical Thermodynamics
Continuum mechanics
Quantum Thermodynamics
Discretely quant mechanics
Statistical Thermodynamics
Statistical science/mechanics
Bulk
Mol
Average
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Terms used in Thermodynamics
System
May be defined as the part of universe selected for thermodynamic consideration i.e. to study the effect of temperature, pressure etc.
It may also be defined as specified part of universe in which energy changes are taking place.
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Terms used in Thermodynamics
Surrounding
The remaining portion of universe excluding the system is called Surrounding
Universe = System + Surrounding
The System and Surrounding can be separated by real and imaginary boundary
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Thermodynamic System
1. Closed system
2. Open system
3. Isolated system
Types of system
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Matter Quantity
Region Space
Boundary Fix/Moving
Surrounding External
Environment
Thermodynamic System
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26 Types of System
Mass Fixed
Closed System
Mass Transfer
No
Energy
Transfer
Yes
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Mass Not Fixed
Open System
Mass Transfer
Possible
Energy Transfer
Possible
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Isolated
System
Mass Fixed No Mass Transfer
No Energy
Transfer
Thermodynamic Equilibrium
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Amity School of Engineering & Technology
Closed System
Open System
Isolated System
m zero Non Fixed No m/E
Thermodynamic System
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Mass, Energy
Space, Region
Environment
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30 Properties: Macro & Microscopic
Physical Condition Macroscopic
Definite State, Change of State
Sucve Path, Process, Cycle
Intensive, Extensive Mass
No Macro Isolated, Equilim
Thermal, Mech, Chem Equilibrium
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NEXT CLASS
M1: Fundamental Concepts
Thermodynamics equilibrium,
Laws of Thermodynamics
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Terms used in Thermodynamics
Homogenous System All the con-stituents are in the same phase and composition of system is uniform throughout
Heterogeneous System It contains two or more phases and the composition is uniform throughout
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Intensive Properties
Do not depend on size of system or
quantity of matter present in it.
Depend on nature of substance present in it.
Example: pressure, temperature, density, surface tension
Terms used in Thermodynamics
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Extensive Properties
Depend on the Quantity of matter present in the system
Examples: volume, energy, heat capacity, entropy
Terms used in Thermodynamics
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State of System
It is the condition of system described in terms of certain measurable parameters such as temperature, pressure, volume, and mass of the system.
Terms used in Thermodynamics
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Process
It gives the path by which system changes its one state to other.
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Isothermal process
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Adiabatic Process does not exch-ange heat with the surrounding and is completely insulated from surrounding.
Isochoric Process keeps volume of the system constant during the process.
Terms used in Thermodynamics
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LAWS OF THERMODYNAMICS
Zeroth law of thermodynamics
1st Law of thermodynamics
2nd Law of thermodynamics
3rd Law of thermodynamics
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Zeroth Law of Thermodynamics
When two bodies A and B are
separately in thermal equilibrium
with a third body, they in turn are
in equilibrium with each other.
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First Law of Thermodynamics
Energy can neither be created
nor destroyed, it may be
converted from one form to
other. The total energy of an
isolated system remains
constant.
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U= q + W U = Internal Energy change
q = heat energy
W = work done
First Law of Thermodynamics
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All spontaneous or naturally occurring processes are irreversible.
Without an external source a spontaneous process cannot be reversed thermodynamically
The entropy of an isolated system must increase if it is to be spontaneous
2nd Law of Thermodynamics
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S (total) = S system + S surrounding
For non-isolated system the total
energy of both the system and
surrounding must increase or must
be positive.
2nd Law of Thermodynamics
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Entropy of all perfectly crystalline solids may be taken as zero at the absolute temperature. At absolute zero a perfectly crystalline solid has a perfect order of its constituent particles i.e. there is no disorder at all. Hence absolute entropy is taken as zero
3rd Law of Thermodynamics
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NEXT CLASS
M1: Fundamental Concepts
Carnot cycle & Internal Combustion (I.C.) Engine
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