Course11210606536 lectures
Engineering Fracture Mechanics
Prof. K. Ramesh and Prof. Tarkes Dora Pallicity · IIT Madras
About
The course covers the basic aspects of Engineering Fracture Mechanics. Spectacular failures that triggered the birth of fracture mechanics, Modes of loading, Classification as LEFM and EPFM, Crack growth and fracture mechanisms, Energy release rate, Resistance, Griffith Theory of fracture, Extension of Griffith Theory by Irwin and Orowan, R-Curve, Pop-in phenomena, Crack branching. Necessary and sufficient conditions for fracture, Stress and Displacement fields in the very near and near-tip fields, Westergaard, Williams and Generalised Westergaard solutions, Influence of the T-stress and higher order terms, Role of photoelasticity on the development of stress field equations in fracture mechanics, Equivalence between SIF and G, Various methods for evaluating Stress Intensity Factors, Modeling plastic zone at the crack-tip, Irwin and Dugdale models, Fracture toughness testing,Fedderson TMs residual strength diagram, Paris law, J-integral, HRR field, Mixed-mode fracture, Crack arrest methodologies.
INTENDED AUDIENCE : Students in Engineering Colleges and working professionals in similar areas
PRE-REQUISITES : Basic course on Strength of Materials. Course on Theory of Elasticity desirable
INDUSTRY SUPPORT : HAL, Honeywell, GE, GM, NAL, DMRL, DRDO, BEML, Mahindra & Mahindra, Tata Motors, L&T, VSSC, Defense and Atomic energy Laboratories
Lectures
Week 1
Week 2
Week 3
Week 4
Week 5
Week 6
- Westergaard Solution of Stress Field for Mode-I
- Displacement Field for Mode-I
- Relationship between KI and GI
Week 7
- Stress Field in Mode-II
- Generalized crack tip stress field equations
- Evaluation of SIF for Various Geometries
Week 8
Week 9
Week 10
- Plane Strain Fracture Toughness Testing
- Plane Stress Fracture Toughness Testing
- Paris Law and Sigmoidal Curve
Week 11
Week 12
Syllabus and materials
At NPTEL, as the course publishes them.
Credits and licence
- Institution
- IIT Madras
- Department
- Mechanical Engineering
- Taught by
- Prof. K. Ramesh, Prof. Tarkes Dora Pallicity
- 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. Coordinated by IIT Guwahati.
- 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