Fatigue of Engineering Plastics |
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Page 13
... shear yielding ) or in an inhomogeneous manner ( shear - band formation or crazing due to normal - stress yielding ) ( see Figs . 1.5 and 1.6 ) . Shear bands and crazes are similar in that a high degree of molecular orientation is ...
... shear yielding ) or in an inhomogeneous manner ( shear - band formation or crazing due to normal - stress yielding ) ( see Figs . 1.5 and 1.6 ) . Shear bands and crazes are similar in that a high degree of molecular orientation is ...
Page 14
... shear bands ( × ) with respect to the principal stress axes . [ After Sternstein ( 66 ) . ] crazes or along shear bands [ 71 ] ; crazes and shear bands may also interact , the bands serving to terminate growing crazes . ( For ...
... shear bands ( × ) with respect to the principal stress axes . [ After Sternstein ( 66 ) . ] crazes or along shear bands [ 71 ] ; crazes and shear bands may also interact , the bands serving to terminate growing crazes . ( For ...
Page 148
... shear lip to the plane stress plastic zone radius ( Fig . 4.2a ) . Hence , a measure- ment of the shear lip width can lead to an estimate of the prevailing stress intensity conditions [ see Eq . ( 4.1 ) ] 2 D≈ry 1 K 2πσ ys Since K ...
... shear lip to the plane stress plastic zone radius ( Fig . 4.2a ) . Hence , a measure- ment of the shear lip width can lead to an estimate of the prevailing stress intensity conditions [ see Eq . ( 4.1 ) ] 2 D≈ry 1 K 2πσ ys Since K ...
Contents
Fatigue Crack Propagation | 74 |
Fatigue Fracture Micromechanisms in Engineering Plastics | 146 |
Composite Systems | 184 |
Copyright | |
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adhesive ASTM ASTM STP Bucknall carbon cfrp component composites constant crack growth rate crack length crack tip craze crystalline cyclic loading da/dN decrease deformation discontinuous growth bands discussed ductile dynamic mechanical effect elastic elastic modulus energy epoxy fatigue behavior fatigue crack growth fatigue crack propagation fatigue failure fatigue fracture fatigue tests FCP behavior FCP rates fibers flaw fracture mechanics fracture surface fracture toughness frequency sensitivity hysteresis hysteretic heating increase J. A. Manson Kambour Kmax laminates loading cycles M. D. Skibo material matrix mean stress mm/cycle modulus molecular weight notched nylon 66 plastic zone PMMA polyacetal polycarbonate polymeric solids polystyrene properties PVDF R. W. Hertzberg Rabinowitz rubber S-N curve samples Section shear shown in Fig specimen spherulite static strain stress intensity factor stress level striations studies temperature rise tensile test frequency thermal failure tion toughening unnotched values viscoelastic yield strength