Fatigue of Engineering Plastics |
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Page 13
... shear ( or shear - resolvable ) yielding , and normal - stress yielding ( see Fig . 1.4 ) . Regardless of the mode , the molecular basis is considered to be the occurrence of large - scale changes in chain conformation resulting from ...
... shear ( or shear - resolvable ) yielding , and normal - stress yielding ( see Fig . 1.4 ) . Regardless of the mode , the molecular basis is considered to be the occurrence of large - scale changes in chain conformation resulting from ...
Page 148
... shear lips may form at the free surfaces . That is , the plane of the crack assumes a ± 45 ° angle relative to the stress axis and component thickness . It has been shown that the shear lips reflect crack propagation under conditions of ...
... shear lips may form at the free surfaces . That is , the plane of the crack assumes a ± 45 ° angle relative to the stress axis and component thickness . It has been shown that the shear lips reflect crack propagation under conditions of ...
Page 192
... shear stress components are signif- icantly increased ; this observation has been interpreted in terms of an increase on the stress concentration factor in the Eyring creep equation , which governs creep in these as well as many other ...
... shear stress components are signif- icantly increased ; this observation has been interpreted in terms of an increase on the stress concentration factor in the Eyring creep equation , which governs creep in these as well as many other ...
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