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Indian Institute of Technology Kanpur

Mechanical Behaviour of Materials (Part – I)

Indian Institute of Technology Kanpur and NPTEL via Swayam

Overview

About the Course:This course has a vast syllabus and hence it has been partitioned into two sections. At the end of both the sections of the course, students should be well conversant with theory of plasticity, theory of dislocations and its relation to various mechanical properties exhibited by various materials, viz. strength, fracture, fatigue and creepINTENDED AUDIENCE :Undergraduate Students and first year graduate students of following discipline: Materials Engineering, Mechanical Engineering, Metallurgical Engineering, Aerospace EngineeringPREREQUISITES :A course related to nature and properties of materials INDUSTRY SUPPORT :Manufacturing Companies, Automobile companies

Syllabus

Week 1 : Elastic constants (atomistic origin), State of stress in 2D/3D, Transformation of stress, Principal stresses Week 2 : Mohr Circle, Stress-strain relationships in isotropic and anisotropic materialsWeek 3 : Viscoelasticity, Tensile test Week 4 : Other tests for Plasticity (Compression, Torsion, Bend testing, Hardness and measurement)Week 5 : Yield criteria, Effective Stress and Effective StrainWeek 6 : Theoretical Strength, Concept of Dislocations, Concept of Slip, Burger Vector and its properties, Stress and Strain fields of Dislocations Week 7 : Energy of Dislocations, Forces on dislocation, Line tension, Motion of Dislocations, Peierls Model, Concept of slip systemsWeek 8 : Single crystal slip (critical resolved shear stress - CRSS), Dislocations in FCC and partial dislocations, Stacking faults and energy Week 9 : Dislocation in other crystal systems, Source of dislocations and multiplicationWeek 10 : Strengthening mechanisms (Strain hardening, Solid Solution Strengthening) Week 11 : Strengthening mechanisms (Precipitation and Dispersion Strengthening)Week 12 : Strengthening Mechanism (Grain Boundary and Hall-Petch relation, Martensitic Strengthening)

Taught by

Prof. Shashank Shekhar, Prof. Sudhanshu Shekhar Singh

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