Fatigue of Engineering Plastics |
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Page 61
... lower polymer stiffness would be expected to lead to superior fatigue behavior . This comes as a result of a lower stress range being devel- oped in the more compliant sample under constant deflection test conditions . Conversely , were ...
... lower polymer stiffness would be expected to lead to superior fatigue behavior . This comes as a result of a lower stress range being devel- oped in the more compliant sample under constant deflection test conditions . Conversely , were ...
Page 184
... lower than those of traditional materials such as metals . The high " strength- to - weight " or high " stiffness ... lower consumption of fuels in vehicles , lower energy costs per unit of performance relative to many other materials ...
... lower than those of traditional materials such as metals . The high " strength- to - weight " or high " stiffness ... lower consumption of fuels in vehicles , lower energy costs per unit of performance relative to many other materials ...
Page 261
... lower the crack growth rate . Since the failure at the lower frequencies occurred at the interface rather than at the center of the bond , it is likely that the higher values of da / dN were due to the attack of water on the adherend ...
... lower the crack growth rate . Since the failure at the lower frequencies occurred at the interface rather than at the center of the bond , it is likely that the higher values of da / dN were due to the attack of water on the adherend ...
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Common terms and phrases
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 fracture mechanics fracture surface fracture toughness frequency sensitivity hysteresis hysteretic heating increase J. A. Manson Kambour 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 semicrystalline 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