Syllabus

Introduction and overview of different types of mechanical response of solid under load, Concept of stress and strain, Tensor notation for stress and strain, stress in rotated coordinate system, Principal stress and principal strain, Mohr circle construction, True stress and strain. [6 contact hours]

Elasticity
Elasticity of isotropic bodies, Variation of elastic constants with lattice parameters and temperature, Elastic properties of porous materials, Stored elastic energy, Strength of defect free solids, Theoretical strength in shear. [5 contact hours]

Linear Elastic Fracture Mechanics (LEFM):
Stress concentrations, Griffith theory of fracture of brittle solids, Stress at crack tip, Irwin formulation of fracture mechanics: stress intensity factor, failure under mode I, II and III, fracture toughness, Energy release rate and crack resistance force, Some useful stress intensity factors, failure under multiaxial stresses. [6 contact hours]

Measurement of elasticity, strength, elasticity and fracture toughness
3-point and 4-point bending tests, Fracture toughness measurement by bending (SENB), Indentation test, Fracture toughness measurement from indentation test. [3 contact hours]

Strengthening mechanisms
Effect of pores, inclusions, agglomerates and large grains, surface flaws, Effect of grain size on strength, Effect of compressive surface residual stresses and temperature on strength, toughening mechanisms: crack deflection, crack bridging, transformation toughening, R-curve behavior. [3 contact hours]

Designing of Materials
The statistical nature of strength distribution, Introduction to Weibull modulus and factors affecting Weibull modulus, Effect of specimen size and test geometry on strength, Proof testing of brittle components. [3 contact hours]

High temperature deformation (Creep) behaviour
Introduction of Creep, Experimental measurement of creep, Driving forces for creep, Diffusion creep: Nabarro-Hearing creep, Coble creep, Viscous creep (solution reprecipitation, viscous flow of glassy layers, viscous creep cavitation), Dislocation creep, Generalized creep expression and discussion. [6 contact hours]

Crack growth and fatigue
Introduction and experimental details of measuring subcritical crack growth (SCG), SCG in silicate glass via dissociative chemisorption: mechanisms, Experimental details of measuring fatigue, Lifetime prediction during subcritical crack growth, Lifetime prediction during creep: Monkman-grant equation. [6 contact hours]

To understand the basic concept of mechanical behavior of materials

To be well versed with fundamental theories related to strength of materials, high temperature deformation of materials, subcritical crack growth and measurement details of elasticity and fracture toughness

To be able solve numerical problems related to mechanical properties of materials

To be able to apply theoretical knowledge acquired during the course to carry out independent research and development work related to conventional as well as advanced ceramic materials

To understand the fundamental theories related to deformation behavior of brittle materials under load

To understand elasticity and linear elastic fracture mechanics (LEFM) of brittle materials

To be well exposed to the various measurement techniques of strength and fracture toughness of materials

To be able to independently solve the numerical problems related to the mechanical properties of materials

To be well versed about the diverse field of high temperature deformation (creep), subcritical crack growth, designing with materials and various toughening mechanisms of materials

Thomas H Courtney, Mechanical Behavior of Materials, Waveland Press

M W Barsoum, Fundamentals of Ceramics, Institute of Physics Publishing

John B. Wachtman, W. Roger Cannon and M. John Matthewson, Mechanical Behavior of Ceramics, John Willy & Sons publications

Brian Lawn, Fracture of brittle solids, Cambridge University Press