Mechanical Behavior of Materials |
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Page 416
... tips of cracks they may contain . That is , even though these materials may have yield strengths greater than the crack propagation stress ( otherwise they would flow macroscopically prior to fracture ) , the high localized stress at the ...
... tips of cracks they may contain . That is , even though these materials may have yield strengths greater than the crack propagation stress ( otherwise they would flow macroscopically prior to fracture ) , the high localized stress at the ...
Page 448
... tip of the crack . This is a necessary , but not sufficient , condition for the crack to advance , resulting in material fracture . An additional condition for crack advance is that it be accompanied by a re- duction in the system ...
... tip of the crack . This is a necessary , but not sufficient , condition for the crack to advance , resulting in material fracture . An additional condition for crack advance is that it be accompanied by a re- duction in the system ...
Page 645
... crack wake . Were the tip of a crack to corrode at a lesser rate than the adjacent fracture surfaces , the crack would blunt and its advance would cease . Thus , we conclude that the fracture sur- faces must be chemically less active than ...
... crack wake . Were the tip of a crack to corrode at a lesser rate than the adjacent fracture surfaces , the crack would blunt and its advance would cease . Thus , we conclude that the fracture sur- faces must be chemically less active than ...
Contents
Overview of Mechanical Behavior | 1 |
Toughening Mechanisms and the Physics of Fracture | 10 |
A The Tension Test B StrainRate Sensitivity C Yielding Under | 28 |
Copyright | |
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alloys applied stress behavior bonding brittle Burgers vector ceramics Chap CHAPTER Coble creep composite crack growth crack propagation crack tip creep fracture creep rate Crystalline Materials cubic curve cyclical decreases diffusional discussed dislocation density dislocation line dislocation motion displacement ductile ductile fracture edge dislocation embrittlement energy equation example fatigue fiber Figure flow stress Fracture Mechanics fracture toughness glass grain boundaries hardening high-temperature increases initial length linear elastic loading low-temperature martensite material's matrix mechanism map microscopic MN/m² Mode 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 solute atom steel strain rate strengthening stress levels stress-strain structure superplastic surface takes place temperature tensile strength tensile stress tion toughening transition viscoelastic volume fraction yield strength