Fatigue of Engineering Plastics |
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Page 87
... rate effects on FCP behavior might better be examined by conducting fatigue tests at a fixed frequency but with different waveforms . For example , loading rates could be increased by switching from a positive sawtooth waveform to ...
... rate effects on FCP behavior might better be examined by conducting fatigue tests at a fixed frequency but with different waveforms . For example , loading rates could be increased by switching from a positive sawtooth waveform to ...
Page 96
... FCP rates in HI - N66 - rich blends would increase with frequency . Recall that nylon 66 showed no FCP frequency sensitivity ( Fig . 3.6b ) . As shown in Fig . 3.11b , FCP rates in pure HI - N66 increased with increasing test frequency ...
... FCP rates in HI - N66 - rich blends would increase with frequency . Recall that nylon 66 showed no FCP frequency sensitivity ( Fig . 3.6b ) . As shown in Fig . 3.11b , FCP rates in pure HI - N66 increased with increasing test frequency ...
Page 99
... FCP rates . Fatigue crack growth rates in polystyrene under fixed loading test con- ditions also have been shown to decrease with decreasing test temperature . Mai and Williams [ 84 ] reported a 20 - fold decrease in FCP rate at 0.15 Hz ...
... FCP rates . Fatigue crack growth rates in polystyrene under fixed loading test con- ditions also have been shown to decrease with decreasing test temperature . Mai and Williams [ 84 ] reported a 20 - fold decrease in FCP rate at 0.15 Hz ...
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