Physics of Materials 1BPHYM102-202
Course Code: 1BPHYM102-202
Credits: 04
CIE Marks: 50
SEE Marks: 50
Total Marks: 100
Exam Hours: 03
Total Hours of Pedagogy: 40H + 12L
Teaching Hours/Weeks: [L:T:P:S] 3:0:2:0
Oscillations: Simple harmonic motion (SHM), Differential equation for SHM, Springs: Stiffness factor and its physical significance, Series and Parallel combination of springs (Derivation), Types of springs and their applications. Theory of damped oscillations (Qualitative), Types of damping (Graphical Approach). Engineering applications of damped oscillations, Theory of forced oscillations with derivation, Resonance, Sharpness of resonance, Resonance in LCR circuits (Qualitative), Numerical problems.
Elasticity: Review Stress-Strain Curve, Strain hardening and softening. Elastic Moduli, Poisson’s ratio, Relation between Y, n and σ (with derivation), mention relation between K, Y and σ, limiting values of Poisson’s ratio. Static and dynamic loading, Beams, Bending moment and derivation of expression, Cantilever, Torsion and Expression for couple per unit twist, Elastic materials (qualitative). Failures of engineering materials – Ductile fracture, Brittle fracture, Stress concentration, Fatigue and factors affecting fatigue (only qualitative explanation), S-N Curve (Wohler curve), Numerical problems.
Thermoelectric materials and devices: Thermo emf and thermo current, Seebeck effect, Peltier effect, Seeback and Peltier coefficients, figure of merit (Mention Expression), laws of thermoelectricity. Expression for thermo emf in terms of T1 and T2, Thermo couples, thermopile, Construction and working of thermoelectric generators (TEG) and Thermoelectric coolers (TEC), low, mid and high temperature thermoelectric materials, Applications: Exhaust of automobiles, Refrigerator, Space program(Radioisotope Thermoelectric Generator- RTG), Numerical Problems.
Cryogenics: Introduction to Thermodynamics, Carnot’s principle, Efficiency, Production of low temperature – Joule Thomson effect (Derivation with 3 cases), Porous plug experiment with theory, Thermodynamical analysis of Joule Thomson effect, Liquefaction of Oxygen by cascade process, Lindey’s air liquefier, Liquefaction of Helium and its properties (superfluidity), Platinum Resistance Thermometer, Applications of Cryogenics: Aerospace, Dewar Flask, Numerical Problems.
Material Characterization and Materials Properties: Wave particle dualism, Schrodinger equation, Interpretation of wave function, Particle in an infinite 1D potential
well, Quantum confinement in 0, 1, 2 and 3 Dimension (Qualitative), Density of states expressions and graphical
representation, Optical properties due to quantum confinement, blue shift, absorption, florescence, Quantum
tunnelling.
Instrumentation Techniques: X-Ray Diffractometer (XRD), Schrerrer equation, Atomic Force Microscope (AFM),
X-ray Photoelectron Spectroscopy (XPS), Scanning Electron Microscope (SEM), Numerical Problems.
