Course11210629367 lectures
Basics of Materials Engineering
Prof. Ratna Kumar Annabattula · IIT Madras
About
The objective of this course is to introduce the basic concepts of materials science and failure theories for design to undergraduate mechanical engineering students. The course is a first level course and hence various concepts such as structure of crystalline materials, defects and their implications to mechanical behavior, the processing of materials through phase diagrams, a detailed discussion on iron-iron carbide equilibrium diagram and heat treatment of steels will be introduced at the introductory level.
Industries that might find this course interesting: Automotive industries, Heavy machinery, Product development and Process industries
Prerequisites: Basic strength of materials, Basic Engineering Mathematics (Matrices, Calculus)
Lectures
Week 1
- Introduction
- Material Property Landscape
- Crystal Structure - 1 (Platonic Solids)
- Crystal Structure - 2 (Unit Cell, Lattice, Crystal)
- Crystal Structure - 3 (Bravais lattice, Symmetry in Crystals)
- Crystal Structure - 4 (Miller Indices for Crystallographic Points and Directions)
- Crystal Structure - 5 (Miller-Brvais Indices, Linear and Planar Density)
Week 2
- Crystal Structure - 6 (Planar desnity, Close-Packed Structures, Stacking Faults)
- Crystal Structure - 7 (Single Crystal and Polycrystalline Materials)
- Crystal Structure - 8 (X-Ray Diffraction and Determination of Structure)
- Defects in Crystalline Materials - 1 (Types of Crystalline Defects)
- Defects in Crystalline Materials - 1 (Point Defects)
- Defects in Crystalline Materials - 1 (Equilibrium Concentration of Vacancies)
- Defects in Crystalline Materials - 1 (Theoretical Shear Strength)
- Defects in Crystalline Materials - 2 (Effect of Point Defects)
- Defects in Crystalline Materials - 2 (Point Defects and Solid Solutions)
Week 3
- Defects in Crystalline Materials - 4 (Slip Systems, Burger's Vector and Dislocation Motion)
- Defects in Crystalline Materials - 4 (Slip in Single Crystals and Resolved Shear Stress)
- Defects in Crystalline Materials - 5 (Different Stages of Slip in Single Crystla Materials)
- Defects in Crystalline Materials - 5 (Geometry & Slip, Stress Field Around a Dislocation and Deformation Twinning)
- Defects in Crystalline Materials - 6 (Twinning, Interfacial Defects and Volume Defects)
- Defects in Crystalline Materials - 6 (Strengthening Mechanisms)
- Defects in Crystalline Materials - 3 (Line Defects, Types of Dislocations and their Characteristics)
Week 4
- Defects in Crystalline Materials - 7 (Plastic deformation in polycrystalline materials, Softening Mechanisms)
- Mechanical Properties of Materials (Concept of Stress Tensor)
- Mechanical Properties (Tension Test-Elastic Deformation)
- Mechanical Properties (Tension Test - Plastic Deformation)
- Mechanical Properties (Tension Test - Plastic Deformation)
- Mechanical Properties (Hardness Test)
Week 5
- Static Failure Theories (Introduction, Definition of Failure)
- Static Failure Theories (General form of failure theory, Stress tensor, Principal stress)
- Static Failure Theories (Distortion Energy Theory)
- Static Failure Theories (Maximum Shear Stress Theory)
- Static Failure Theories (Design Problems)
- Static Failure Theories (Failure of Brittle Materials)
Week 6
- Static Failure Theories (Coulomb-Mohr and Modified Coulomb-Mohr)
- Static Failure Theories (Notches and Stress Concentration)
- Introduction to Fracture Mechanics, Griffith's Analysis of a Cracked Body
- Fracture Mechanics (Energy Release Rate)
- Fracture Mechanics (Crack Resistance, Stress Intensity Factor, Fracture Toughness)
Week 7
- Fatigue Failure of Materials (Introduction, Historical Events, S-N Diagram)
- Fatigue Failure of Materials (S-N Diagram, Types of Time Varying Loads)
- Fatigue Failure of Materials (High Cycle Fatigue, Low Cycle Fatigue, Stress Ratio, Amplitude Ratio)
- Fatigue Failure of Materials (Rotating Beam Bending Test, Estimated S-N diagram)
- Fatigue Failure Theories (Fatigue strength correction factors)
- Problems on Fatigue Failure - 1 (S-N diagram and Corrected endurance strength)
Week 8
- Fatigue Failure of Materials (Features of Fatigue Failure; Factor of Safety in Life and Stress)
- Fatigue Failure of Materials (Effect of Mean Stress)
- Fatigue Failure of Materials (Multiaxial Fatigue and Variable Amplitude Loading)
- Fatigue Failure of Materials (Fatigue Stress Concentration Factor)
- Fatigue Failure of Materials (Fatigue Crack Growth, Paris' law)
- Problems on Fatigue Failure - 2 (Effect of mean stress, Fatigue crack growth)
- Problems on Fatigue Failure - 3 (Effect of Notch, Multiaxial Loading)
Week 9
- Phase Diagrams (Introduction)
- Phase Diagrams (Language of Phase Diagrams, Types of Binary Phase Alloys)
- Phase Diagrams (Tie line, Lever Rule, Indentifcation of compositions and weight fractions in two-phase regions)
- Phase Diagrams (Type 1: Isomorphous Alloys, Microstructure evolution in Equilibrium and Noon equilibrium cooling)
- Phase Diagrams (Conguent Melting Alloys, Type II Alloys, Eutectic Reaction)
- Phase Diagrams (Type III Alloys with Partial Solubility in Solid State)
Week 10
- Phase Diagrams (Conguent melting alloys, Peritectic Reaction, Monotectic Reaction)
- Phase Diagrams (Allotropy, Eutectoid and Peritectoid Reactions)
- Phase Diagrams (Iron-Iron Carbide Phase Diagram)
Week 11
- Kinetics of Phase Transformations (Homogeneous Nucleation)
- Kinetics of Phase Transformations (Heterogeneous Nucleation)
- Isothermal Transformation Diagram
Week 12
Syllabus and materials
At NPTEL, as the course publishes them.
Credits and licence
- Institution
- IIT Madras
- Department
- Mechanical Engineering
- Teacher
- Prof. Ratna Kumar Annabattula
- Level
- Undergraduate
- Language
- English
- Subjects
- Engineering
- Source
- NPTEL
- Licence
- CC BY-NC-SA, as NPTEL states it. Non-commercial use only. NPTEL's terms
- Attribution
- NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge.
- Who can watch
- NPTEL gives no rating. Invisible Network shows it to Tweens profiles and older, judged from what the source says about it. How courses are placed
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