Mod-04 Lec-22 Multi-parameter Stress Field Equations
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Mod-04 Lec-23 Validation of Multi-parameter Field Equations
24
Mod-05 Lec-24 Discussion Session-I
25
Evaluation of SIF for Various Geometries
26
SIF for Embedded Cracks
27
SIF for Surface Cracks
28
Modeling of Plastic Deformation
29
Irwin's Model
30
Dugdale Model
31
Fracture Toughness Testing
32
Plane Strain Fracture Toughness Testing
33
Plane Stress Fracture Toughness Testing continued
34
Paris Law and Sigmoidal Curve
35
Crack Closure
36
Crack Growth Models
37
J-Integral
38
HRR Fields and CTOD
39
FAD and Mixed Mode Fracture
40
Crack Arrest and Repair Methodologies
41
Mod-09 Lec-41 Discussion Session - II
Description:
Instructor: Prof. K. Ramesh, Department of Applied Mechanics, IIT Madras.
The course covers the basic aspects of Engineering Fracture Mechanics. Topics covered in this course include 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.
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