Front Cover -- Photoelasticity for Designers -- Copyright Page -- Table of Contents -- Dedication -- Preface -- Definitions -- List of Symbols -- Conversion Table -- Multiplying Factors -- CHAPTER 1. Behaviour of Light in Plane Polariscope -- 1.1. Nature of light -- 1.2. Polaroid polarizers -- 1.3. Polarization by reflection or refraction -- 1.4. NicoI prism -- 1.5. Simple polariscope -- 1.6. Determination of polarization axis -- 1.7. Effect of stressed transparent model in plane polariscope

1.8. Stress- and strain-optical coefficients expressed in terms of relative retardation1.9. Derivation of stress-optical coefficient -- 1.10. Fringe-stress and fringe-strain coefficients expressed interms of the fringe order -- 1.11. The Brewster unit -- 1.12. Three-dimensional effects -- 1.13. Summary of photoelastic effect -- 1.14. Effect of plastic strain -- 1.15. Comparison of fringe-stress and strain coefficients -- 1.16. Analysis by light vectors -- 1.17. Intensity of light emerging from polariscope -- 1.18. Photoelastic effect using white light

1.19. Isoclinics1.20. Lines of principal stress -- CHAPTER 2. Behaviour of Light in Circular Polariscope -- 2.1. Circularly polarized light -- 2.2. Polariscope arrangements -- 2.3. Features of the circular polariscope -- 2.4. White light in circular polariscope -- 2.5. Î"/4 plates -- 2.6. Effect of a stressed model in circular polariscope -- 2.7. Compensators -- CHAPTER 3. Polariscopes -- 3.1. Diffusion polariscope -- 3.2. Lens polariscope -- 3.3. Parallel light -- 3.4. Length of polariscope -- 3.5. Two lenses in system

3.6. Comparison of diffusion and lens-type polariscopes3.7. Reflection polariscopes -- 3.8. Examination of fringes -- 3.9. Quality of lenses for polariscopes -- 3.10. Light source -- 3.11. Photography -- 3.12. Camera -- CHAPTER 4. Photoelastic Materials -- 4.1. History -- 4.2. Measurement of fringe-stress and strain coefficients -- 4.3. Values of the fringe-stress and strain coefficients -- 4.4. Mechanical properties -- 4.5. Choice of material -- 4.6. Materials available -- 4.7. Epoxy resins -- 4.8. Catalin 61 893 (formerly Bakelite BT 61 893)

4.9. Catalin 800 and Marblette4.10. Columbia resin CR 39 -- 4.11. Celluloid -- 4.12. Gelatin -- 4.13. Polycarbonate -- 4.14. Urethane rubber -- 4.15. Temperature effects on the fringe-stress and strain coefficients -- 4.16. Effect of creep on the fringe-stress and strain coefficients -- 4.17. Photoelastic dispersion -- 4.18. Time-edge effects -- 4.19. Effect of various liquids on plastics -- 4.20. Distribution of surface stresses in notched parts -- 4.21. Liquids causing damage to plastics -- 4.22. Annealing