Fatigue of Engineering Plastics |
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Page 160
... striation width - to - depth ratio in PMMA was relatively constant at 100 : 1 . To further complicate the picture , occasional serrated striations have been observed on some fatigue surfaces in PMMA [ 17 , 29 ] but not in others [ 19 ] ...
... striation width - to - depth ratio in PMMA was relatively constant at 100 : 1 . To further complicate the picture , occasional serrated striations have been observed on some fatigue surfaces in PMMA [ 17 , 29 ] but not in others [ 19 ] ...
Page 162
... striations and the larger discontinuous crack growth 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 ...
... striations and the larger discontinuous crack growth 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 ...
Page 179
... striations ) . As such , one cannot automatically separate crack initiation from crack propagation based upon a simple frac- ture band count . That is to say , if an unnotched sample experienced a fatigue life of N cycles with L fatigue ...
... striations ) . As such , one cannot automatically separate crack initiation from crack propagation based upon a simple frac- ture band count . That is to say , if an unnotched sample experienced a fatigue life of N cycles with L fatigue ...
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