Fatigue of Engineering Plastics |
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Page 154
... striation width measure- ment can be made . In a sense then , fatigue striations serve as a permanent record of the fracture process . It has been suggested that this second - power dependence of striation width on AK reflects the fact ...
... striation width measure- ment can be made . In a sense then , fatigue striations serve as a permanent record of the fracture process . It has been suggested that this second - power dependence of striation width on AK reflects the fact ...
Page 157
... striation width is not constant ( and equal to two ) but rather varies with the power of AK ranging from 4 to about 20 ! Obviously , striation width - crack opening displacement correlations are suspect for the case of polymer fatigue ...
... striation width is not constant ( and equal to two ) but rather varies with the power of AK ranging from 4 to about 20 ! Obviously , striation width - crack opening displacement correlations are suspect for the case of polymer fatigue ...
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 ] ...
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