Mechanical Behavior of Materials

Por: Swayam . en: ,

Week 1: Introduction, overview of the subject and fundamentals of the atomic structure and types of bonding in different classes of materials and its relation to the physical and mechanical properties   Week 2: Elasticity - Analysis of stress, State of stress at a point, Normal and shear stress components, Stress components on an arbitrary plane, Principal stresses, Plane stress & amp; Plane strain,   Week 3:Generalized Hooke’s law, Atomic equivalent of Hooke’s law, Elastic behavior of anisotropic and isotropic materials.   Week 4: Plastic deformation in single & amp; polycrystalline, semi crystalline materials, strengthening mechanisms in solids, Work hardening   Week 5: Solid solution strengthening, Grain boundary strengthening, Particle hardening, High temperature deformation of amorphous; crystalline materials   Week 6:Mechanical testing- A review, Common states of stress in real life, Tension, Indentation, Compression, Torsion, Bending.   Week 7:Fracture of solids/Fracture mechanics - Linear elastic stress field in cracked bodies – Crack deformation modes, - Singular stress field and displacement fields   Week 8:Stress intensity factor solutions - Crack growth based on energy balance - Griffith’s criterion for brittle fracture - Strain energy release rate, Stress intensity factor equivalence - Crack stability, R curves & amp;   Week 9:J integral concepts – Critical stress intensity factor fracture criterion -Fracture criterion - Experimental determination of fracture toughness (K IC )- Non-linear fracture - Toughening mechanisms (in ceramics).   Week 10: Creep, mechanisms of creep, Creep of pure metals, solid solutions, MMCs, Creep of ceramics and polymers, creep asymmetry. Superplasticity in materials   Week 11:Fatigue of engineering materials - Characteristics of fatigue fracture -Fatigue crack propagations laws , Strain controlled fatigue   Week 12: Fatigue failure models - Fatigue life calculations, High cycle fatigue design- Surface fatigue failure models- dynamic contact