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 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 ) ] D≈ry 1 K 2πσ . ys , 2 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 ) ] D≈ry 1 K 2πσ . ys , 2 Since K ...
Page 268
... shear ( 2 ) constituent debonding , i.e. , the matrix breaks away from the filaments Longitudinal compression ( Figs ... Shear failure ( f ) Ply separation by transverse tension through the thickness ( transverse tensile splitting ) Mode ...
... shear ( 2 ) constituent debonding , i.e. , the matrix breaks away from the filaments Longitudinal compression ( Figs ... Shear failure ( f ) Ply separation by transverse tension through the thickness ( transverse tensile splitting ) Mode ...
Contents
Fatigue Crack Propagation | 74 |
Fatigue Fracture Micromechanisms in Engineering Plastics | 146 |
Composite Systems | 184 |
Copyright | |
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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 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 ΔΚ