K. Ramesh: Engineering Fracture Mechanics (IIT Madras)

# playlist of the 41 videos (click the up-left corner of the video)

source: nptelhrd    2012年4月3日
Mechanical - Engineering Fracture Mechanics by Prof. K. Ramesh, Department of Mechanical Engineering, IIT Madras. For more details on NPTEL visit http://nptel.iitm.ac.in

01 EFM Course Outline 48:59
02 Spectacular Failures 48:54
03 Lessons from Spectacular Failures 50:28
04 LEFM and EPFM 49:52
05 Fracture Mechanics is Holistic 51:30
06 Fatigue Crack Growth Model 50:23
07 Crack Growth and Fracture Mechanisms 53:03
08 Elastic Strain Energy 48:16
09 Fracture Strength by Griffith 50:26
10 Energy Release Rate 50:48
11 Utility of Energy Release Rate 52:46
12 Pop-in Phenomenon 51:29
13 Displacement and Stress Formulations 51:25
14 Forms of Stress Functions 52:40
15 Airy's Stress Function for Mode-I 51:49
16 Westergaard Solution of Stress Field for Mode-I 51:53
17 Displacement Field for Mode-I 51:14
18 Relation between KI and GI 53:20
19 Stress Field in Mode-II 51:01
20 Generalised Westergaard Approach 53:14
21 William's Eigen Function Approach 46:25
22 Multi-parameter Stress Field Equations 51:28
23 Validation of Multi-parameter Field Equations 47:01
24 Discussion Session-I 54:29
25 Evaluation of SIF for Various Geometries 49:20
26 SIF for Embedded Cracks 47:22
27 SIF for Surface Cracks 53:00
28 Modeling of Plastic Deformation 53:01
29 Irwin's Model 52:29
30 Dugdale Model 52:58
31 Fracture Toughness Testing 52:48
32 Plane Strain Fracture Toughness Testing 50:43
33 Plane Stress Fracture Toughness Testing 51:33
34 Paris Law and Sigmoidal Curve 51:12
35 Crack Closure 51:17
36 Crack Growth Models 52:51
37 J-Integral 54:19
38 HRR Field and CTOD 52:51
39 FAD and Mixed Mode Fracture 52:00
40 Crack Arrest and Repair Methodologies 53:06
41 Discussion Session - II 59:03

K. Ramesh: Experimental Stress Analysis (IIT Madras)

# playlist of the 41 videos (click the up-left corner of the video)

source: nptelhrd    2011年10月12日
Mechanical - Experimental Stress Analysis by Prof. K. Ramesh, Department of Applied Mechanics, IIT Madras. For more details on NPTEL visit http://nptel.iitm.ac.in

01 Overview of Experimental Stress Analysis 46:13
02 Optical Methods Work as Optical Computers 51:47
03 Stress, Strain and Displacement Fields 1:02:34
04 Physical Principle of Strain Gauges, Photoelasticity and Moiré 56:33
05 Introduction to Moiré, Brittle Coatings and Holography 55:16
06 Hologram Interferometry, Speckle Methods 57:08
07 Introduction to Shearography, TSA, DIC and Caustics 54:29
08 Fringe Patterns - Richness of Qualitative Information 51:46
09 Multi-Scale Analysis in Experimental Mechanics 55:03
10 Selection of an Experimental Technique 1:00:41
11 Introduction to Transmission Photoelasticity 57:59
12 Ordinary and Extraordinary Rays 52:51
13 Light Ellipse, Passage of Light Through a Crystal Plate 52:58
14 Retardation Plates, Stress-optic Law 51:56
15 Plane Polariscope 50:51
16 Jones Calculus 55:01
17 Circular Polariscope 52:51
18 Determination of Photoelastic Parameters at an Arbitrary Point 52:54
19 Tardy's Method of Compensation 53:30
20 Calibration of Photo elastic Materials 55:59
21 Fringe Thinning Methodologies 58:33
22 Fringe Ordering in Photoelasticity 51:31
23 Miscellaneous Topics in Transmission Photoelasticity 55:05
24 Three Dimensional Photoelasticity 55:53
25 Overview of Digital Photoelasticity 52:06
26 Introduction to Photoelastic Coatings 56:58
27 Correction Factors for Photoelastic Coatings 56:44
28 Coating Materials,Selection of Coating Thickness 51:05
29 Calibration of Photoelastic Coatings, Introduction to Brittle Coatings 52:56
30 Analysis of Brittle Coatings 51:15
31 Introduction to Strain Gauges 56:17
32 Strain Sensitivity of a Strain Gauge, Bridge Sensitivity, Rosettes 56:41
33 Strain Gauge Alloys, Carriers and Adhesives 51:57
34 Performance of Strain Gauge System 53:48
35 Temperature Compensation, Two-wire and Three-wire Circuits 53:16
36 Strain Gauge Selection 49:54
37 Bonding of a Strain Gauge 57:59
38 Soldering, Accounting for Transverse Sensitivity Effects 53:38
39 Correction Factors for Special Applications 1:00:08
40 Special Gauges 57:58
41 Discussion Session 39:56