10ME761 Experimental Stress Analysis syllabus for ME


Part A
Unit-1 Electrical Resistance Strain Gages 6 hours

Strain sensitivity in metallic alloys, Gage construction, Adhesives and mounting techniques, Gage sensitivity and gage factor, Performance Characteristics, Environmental effects, Strain Gage circuits. Potentiometer, Wheatstone's bridges, Constant current circuits.

Unit-2 Strain Analysis Methods 6 hours

Two element, three element rectangular and delta rosettes, Correction for transverse strain effects, Stress gage, Plane shear gage, Stress intensity factor gage.

Unit-3 Photo-elasticity 8 hours

Nature of light, Wave theory of light - optical interference , Stress optic law – effect of stressed model in plane and circular polariscopes, Isoclinics & Isochromatics, Fringe order determination Fringe multiplication techniques, Calibration photoelastic model materials

Unit-4 Two Dimensional Photo-elasticity 6 hours

Separation methods: Shear difference method, Analytical separation methods, Model to prototype scaling, Properties of 2D photo-elastic model materials, Materials for 2D photoelasticity

Part B
Unit-5 Three Dimensional Photo elasticity 6 hours

Stress freezing method, Scattered light photo-elasticity, Scattered light as an interior analyzer and polarizer, Scattered light polariscope and stress data Analyses.

Unit-6 Photoelastic (Birefringent) Coatings 8 hours

Birefringence coating stresses, Effects of coating thickness: Reinforcing effects, Poisson's, Stress separation techniques: Oblique incidence, Strip coatings.

Unit-7 Brittle Coatings 6 hours

Coatings stresses, Crack patterns, Refrigeration techniques, Load relaxation techniques, Crack detection methods, Types of brittle coatings, Calibration of coating. Advantages and brittle coating applications.

Unit-8 Moire Methods 6 hours

Moire fringes produced by mechanical interference. Geometrical approach, Displacement field approach to Moire fringe analysis ,0ut of plane displacement measurements, Out of plane slope measurements. Applications and advantages

Last Updated: Tuesday, January 24, 2023