Fatigue of Engineering Plastics |
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Page 53
... initial value σ¡ . induced softening of the material . Cyclic - induced material property changes may also occur and are discussed more fully in Section 2.5 . When the result- ing stress range decreases , it has been suggested that the ...
... initial value σ¡ . induced softening of the material . Cyclic - induced material property changes may also occur and are discussed more fully in Section 2.5 . When the result- ing stress range decreases , it has been suggested that the ...
Page 55
... initial state of the material and the imposed strain amplitude . In mate- rials that are structurally inhomogeneous , such as in semicrystalline and two - phase polymers and composites , more initial defects are likely to exist , which ...
... initial state of the material and the imposed strain amplitude . In mate- rials that are structurally inhomogeneous , such as in semicrystalline and two - phase polymers and composites , more initial defects are likely to exist , which ...
Page 138
... initial flaw size and a large final crack dimension , the computed component life is found to depend markedly on the initial defect size but not on the final flaw size . From the above , it is important for one to obtain an accurate ...
... initial flaw size and a large final crack dimension , the computed component life is found to depend markedly on the initial defect size but not on the final flaw size . From the above , it is important for one to obtain an accurate ...
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