Mechanical Behavior of Materials |
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Page 4
... viscoelastic material becomes stiffer ; for example , the " average " modulus ( e.g. , σ1 / ɛ , in Fig . 1.4b ) increases with strain rate . Viscoelastic behavior is also manifested by a strain that varies with time under conditions of ...
... viscoelastic material becomes stiffer ; for example , the " average " modulus ( e.g. , σ1 / ɛ , in Fig . 1.4b ) increases with strain rate . Viscoelastic behavior is also manifested by a strain that varies with time under conditions of ...
Page 70
... viscoelastic deformation . As noted , viscoelasticity refers to time- dependent elastic deformation . It is observed in a number of metallic and non- metallic materials , but is most important in polymers . The time dependence of ...
... viscoelastic deformation . As noted , viscoelasticity refers to time- dependent elastic deformation . It is observed in a number of metallic and non- metallic materials , but is most important in polymers . The time dependence of ...
Page 75
... viscoelastic . If the elastic modulus is defined as the stress divided by the ( instantaneous ) strain , the modulus lies between two extremes : the unrelaxed modulus E , = σ / ε , and the relaxed modulus E , = σ / ɛ2 . On unloading ...
... viscoelastic . If the elastic modulus is defined as the stress divided by the ( instantaneous ) strain , the modulus lies between two extremes : the unrelaxed modulus E , = σ / ε , and the relaxed modulus E , = σ / ɛ2 . On unloading ...
Contents
Overview of Mechanical Behavior | 1 |
Toughening Mechanisms and the Physics of Fracture | 10 |
Elastic Behavior | 44 |
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alloys applied stress behavior bonding brittle Burgers vector ceramics Chap CHAPTER Coble creep composite compression crack growth crack propagation crack tip craze creep fracture creep rate Crystalline Materials cubic curve cyclical decreases depends discussed dislocation density dislocation line dislocation motion displacement ductile ductile fracture edge dislocation embrittlement energy equation example fatigue fcc metals fiber Figure flow stress Fracture Mechanics fracture toughness glass grain boundaries hardening high-temperature increases initial length linear elastic loading low-temperature macroscopic martensite material's matrix MN/m² modulus nucleation obstacles particle phase plastic deformation plastic flow plastic strain polycrystalline polycrystals polymers precipitation Prob ratio region result Schematic screw dislocation SECTION shear stress shown in Fig single crystal slip direction slip plane slip systems solids steel strain rate strengthening stress-strain structure superplastic surface takes place TCRSS temperature tensile axis tensile strength tensile stress tion toughening transition viscoelastic volume fraction work-hardening yield strength