538 Index Finite element mesh 308 Neuber's rule 425 Finite element method 300 Notch sensitivity 424 Fixed-ended struts 33 Null balance 173 Flexural stiffness 193,197 Foil gauge 171,173 Fracture mechanics 472 Oblique plane,stress on 224 Fringe order 185-6 Octahedral planes 249 Fringe pattern181-2,184-192,420,481 Octahedral shear stress 250 Fringe value 185-6 Octahedral stress 249 Frontal method 315 Overspeeding 95 Frozen stress technique 190 Full bridge circuit 173 Parallel set-up 183 Partitioning 349 Gauge Perry-Robertson 29,39 acoustic 180 Photoelastic coating 190 electrical resistance 171-180 Photoelasticity strain 171-80 reflection 190 factor 172 transmission 181 Girder,built-up 50,52 Piezo-resistive gauge 180 Graphical procedure,stress 228-9 Plane polarisation 182 Grid technique 192 Plane strain 254 Griffith's criterion 475 Plane stress 254 Plastic bending 64 Plastic deformation Half-bridge 172-3 discs 94 Hetenyi 84 thick cylinder 87 Holography 192 Plastic hinge 71 Hydrostatic stress 249,251 Plastic limit design 71 Plastic torsion 75,79 Pneumatic gauge 180 Idealisation 305 Polariscope 182 Inductance gauge 180 Polariser 182 Initial curvature 41 Principal axes 2 Interference 181,184 Principal second moments of area 4 Isochromatic 185 Principal strain 228 Isoclinic 188 Principal stress 228,247 Product second moment of area 3 Johnson parabolic formula 36 Quarter-bridge 173 Quarter-wave plates 187 Land's circle of moments of area 7 Larson-Miller parameter 468 Laterally loaded struts 46 Radial stress117-23,125-8,193-9 Light field 182 Radius of gyration 28 Load factor 41,73 Rankine-Gordon theory 38 Rectangular plates 213 Reduced modulus 82 Reflection polariscope 190 Manson-Haferd parameter 469 Reflective coating 190 Material fringe value 185-6 Refraction 183 Maximum compressive stress 381,385,387 Replica technique 192 Mean stress 252,451 Residual stresses 73.79.84.86.95-6.394 Membrane 152 Resistivity 172 Modulus,reduced 82 Rotating cylinders 124 Mohr's circle of second moments of area 6 Rotating discs Mohr's strain circle 228 and rings 117 Mohr's stress circle 228 collapse 94 Moire 192 Rotating hollow discs 122 Momental ellipse 11,13 Rotating uniform strength discs 125 Monochromatic light 185 Ruge and Simmons 171538 Index Finite element mesh 308 Finite element method 300 Fixed-ended struts 33 Flexural stiffness 193. 197 Foil gauge 171, 173 Fracture mechanics 47 Fringe order 185-6 Fringe pattern 181-2, Fringe value 185-6 Frontal method 3 15 Frozen stress technique Full bridge circuit 173 84- 192,420,481 190 Gauge acoustic 180 electrical resistance strain 171-80 factor 172 17 1 - 180 Girder, built-up 50, 52 Graphical pmedure, stress 228-9 Grid technique 192 Griffith’s criterion 475 Half-bridge 172-3 Het6nyi 84 Holography 192 Hydrostatic stress 249, 251 Idealisation 305 Inductance gauge 180 Initial curvature 41 Interference 181, 184 Isochromatic 185 Isoclinic 188 Johnson parabolic formula 36 Land’s circle of moments of area 7 Larson-Miller parameter 468 Laterally loaded struts 46 Light field 182 Load factor 41, 73 Manson-Haferd parameter 469 Material fringe value 185-6 Maximum compressive stress 381, 385,387 Mean stress 252.45 1 Membrane 152 Modulus. reduced 82 Mohr’s circle of second moments of area Mohr’s strain circle 228 Mohr’s stress circle 228 Moir6 192 Momenta1 ellipse 1 I, 13 Monochromatic light 185 6 Neuber’s rule 425 Notch sensitivity 424 Null balance 173 Oblique plane, stress on 224 Octahedral planes 249 Octahedral shear stress 250 Octahedral stress 249 Overspeeding 95 Parallel set-up 183 Partitioning 349 Perry-Robertson 29.39 Photoelastic coating 190 Photoelasticity reflection 190 transmission 18 1 Piezo-resistive gauge 180 Plane polarisation 182 Plane strain 254 Plane stress 254 Plastic bending 64 Plastic deformation discs 94 thick cylinder 87 Plastic hinge 71 Plastic limit design 71 Plastic torsion 75, 79 Pneumatic gauge 180 Polariscope 182 Polariser 182 Principal axes 2 Principal second moments of area 4 Principal strain 228 Principal stress 228, 247 Product second moment of area 3 Quarter-bridge 173 Quarter-wave plates 187 Radial stress 117-23, 125-8, 193-9 Radius of gyration 28 Rankine-Gordon theory 38 Rectangular plates 213 Reduced modulus 82 Reflection polariscope 190 Reflective coating 190 Refraction 183 Replica technique 192 Residual stresses 73.79.84.86.95-6.394 Resistivity 172 Rotating cylinders 124 Rotating discs and rings 117 collapse 94 Rotating hollow discs 122 Rotating uniform strength discs 125 Ruge and Simmons 171