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Indian Institute of Technology Madras

Experimental Stress Analysis

Indian Institute of Technology Madras and NPTEL via Swayam


The course covers the basic aspects of experimental stress analysis that includes exhaustive treatment of the most versatile techniques like photoelasticity and strain gauges and also a brief introduction to the emerging techniques like digital image correlation. In addition it also provides the fundamental aspects of six different experimental techniques such as Moiré, Brittle Coatings, Holography, Speckle Methods, Thermoelastic Stress Analysis and Caustics.
INTENDED AUDIENCE : Students in Engineering Colleges and working professionals in similar areasPRE-REQUISITES : Basic course on Strength of Materials. Course on Theory of Elasticity desirableINDUSTRY SUPPORT : HAL, GE, GM, NAL, DMRL, DRDO, BEML, Mahindra&Mahindra, Tata Motors, L&T, VSSC, Defense and Atomic energy Laboratories



Week1 : Overview of Experimental Stress AnalysisWeek2 : Physical Principle of Experimental Techniques, Introduction to Various experimental TechniquesWeek3 : Fringe Patterns – Richness of Qualitative Information, Multi Scale AnalysisWeek4 : Selection of Experimental Techniques, Introduction to Crystal OpticsWeek5 : Light Ellipse, Retardation Plates and Plane PolariscopeWeek6 : Jones Calculus, Plane and Circular Polariscope analysisWeek7 : Compensation Techniques, Calibration of Photoelastic MaterialsWeek8 : Fringe ordering and Three-Dimensional PhotoelasticityWeek9 : Photoelastic CoatingsWeek10 : Brittle Coatings and Strain Gauges IntroductionWeek11 : Strain Gauge Alloys, Performance of Strain Gauge SystemWeek12 : Correction factor for Special Applications

Taught by

K. Ramesh

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