Mechanical Metallurgy |
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Page 82
... MAXIMUM - SHEAR - STRESS OR TRESCA CRITERION This yield criterion assumes that yielding occurs when the maximum shear stress reaches the value of the shear stress in the uniaxial - tension test . From Eq . ( 2-21 ) , the maximum shear ...
... MAXIMUM - SHEAR - STRESS OR TRESCA CRITERION This yield criterion assumes that yielding occurs when the maximum shear stress reaches the value of the shear stress in the uniaxial - tension test . From Eq . ( 2-21 ) , the maximum shear ...
Page 338
... maximum load the true strain should be based on actual area or diameter measurements . ε = In Ao A = In ( π / 4 ) ... maximum load is reached . However , beyond maximum load the high localized strains in the necked region that are used in ...
... maximum load the true strain should be based on actual area or diameter measurements . ε = In Ao A = In ( π / 4 ) ... maximum load is reached . However , beyond maximum load the high localized strains in the necked region that are used in ...
Page 435
... maximum stress and adjusting the minimum stress in each case so that it is a constant fraction of the maximum stress . The case of completely reversed stress is given at R = - 1.0 . Note that as R becomes more positive , which is ...
... maximum stress and adjusting the minimum stress in each case so that it is a constant fraction of the maximum stress . The case of completely reversed stress is given at R = - 1.0 . Note that as R becomes more positive , which is ...
Contents
Elements of the Theory of Plasticity | 3 |
Dislocation Theory | 150 |
Strengthening Mechanisms | 190 |
Copyright | |
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alloys angle annealed atoms axis behavior billet brittle fracture Burgers vector cold-worked components compression constant crack criterion cycles decrease determined diameter direction dislocation line ductile edge dislocation elastic elongation energy equations extrusion factor failure fatigue limit fibers flow curve flow stress force forging friction given grain boundaries hot-working hydrostatic increases lattice length load machining martensite material matrix maximum measured mechanical Metals Park modulus normal stress notch occurs orientation particles percent plastic deformation plastic strain polymer pressure produced properties ratio reduction region residual stresses rolling screw dislocation shear strain shear stress sheet shown in Fig shows single crystals slip plane slip systems Society for Metals solid specimen steel strain hardening strain rate stress-strain curve structure surface tensile strength tensile stress tensor theory thermal thickness tool torsion Trans usually velocity workpiece yield strength yield stress York