Fatigue of Engineering Plastics |
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Page 162
... bands . Some useful information in this regard can be obtained from optical microscope studies . For example , it is generally found , at least in homogene- ous amorphous polymers , that the discontinuous crack growth bands are ...
... bands . Some useful information in this regard can be obtained from optical microscope studies . For example , it is generally found , at least in homogene- ous amorphous polymers , that the discontinuous crack growth bands are ...
Page 176
... bands with those shown in Fig . 4.15a for a dif- ferent grade of PVC ( M = 108,000 ) . ] Note how the microvoid size gradient within the bands becomes unclear at high M and that the stretch zone is not readily apparent . In marked ...
... bands with those shown in Fig . 4.15a for a dif- ferent grade of PVC ( M = 108,000 ) . ] Note how the microvoid size gradient within the bands becomes unclear at high M and that the stretch zone is not readily apparent . In marked ...
Page 178
... band ) ; however , unlike the discontinuous growth bands , these bands have a relatively con- stant size of 6-7 μm over a range of growth rates from 5 x 10-5 to 2 × 10-4 mm / cycle . ( Similar bands have been found on the fracture ...
... band ) ; however , unlike the discontinuous growth bands , these bands have a relatively con- stant size of 6-7 μm over a range of growth rates from 5 x 10-5 to 2 × 10-4 mm / cycle . ( Similar bands have been found on the fracture ...
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