Fatigue of Engineering Plastics |
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Page 23
... Ductility When stressed , polymers exhibit behavior ranging from a ductile to a brittle ( yielding and flow versus facile crack initiation and propagation , respectively ) response . The external factors favoring yielding have already ...
... Ductility When stressed , polymers exhibit behavior ranging from a ductile to a brittle ( yielding and flow versus facile crack initiation and propagation , respectively ) response . The external factors favoring yielding have already ...
Page 26
... ductility tends to be high , as in polycarbonate ; when ƒ is less than about 0.09 , ductility tends to be low , as in polystyrene . The basis for this correlation ( which , unfortunately , is not universally valid ) probably lies in the ...
... ductility tends to be high , as in polycarbonate ; when ƒ is less than about 0.09 , ductility tends to be low , as in polystyrene . The basis for this correlation ( which , unfortunately , is not universally valid ) probably lies in the ...
Page 27
... ductility , and may well be important in fatigue response . 1.5.6 Competitive Events in Fracture Whatever the precise mechanisms that control ductility , significant effects of structure and morphology exist . Ductility tends to ...
... ductility , and may well be important in fatigue response . 1.5.6 Competitive Events in Fracture Whatever the precise mechanisms that control ductility , significant effects of structure and morphology exist . Ductility tends to ...
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