Fatigue of Engineering Plastics |
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Page 115
... craze formation at a crack tip in that ( 1 ) the craze assumes the shape of a narrow plastic strip ; ( 2 ) the craze is located in the plane of the crack ; ( 3 ) there is a uniform stress acting across the craze ( i.e. , the craze ...
... craze formation at a crack tip in that ( 1 ) the craze assumes the shape of a narrow plastic strip ; ( 2 ) the craze is located in the plane of the crack ; ( 3 ) there is a uniform stress acting across the craze ( i.e. , the craze ...
Page 163
... CRAZE STRETCH ZONE NEW CRACK TIP CRAZE 75μ Fig . 4.13 Discontinuous crack growth process . ( a ) Composite micrograph of PVC showing position of craze ( į ) and crack ( ↓ ) tip at given cyclic intervals ; ( b ) model of discontinuous ...
... CRAZE STRETCH ZONE NEW CRACK TIP CRAZE 75μ Fig . 4.13 Discontinuous crack growth process . ( a ) Composite micrograph of PVC showing position of craze ( į ) and crack ( ↓ ) tip at given cyclic intervals ; ( b ) model of discontinuous ...
Page 165
... craze zone would suddenly rupture . The presumed relative constancy of o , v ,, therefore , reflects a metastable equilibrium condition between fibrillar orientation ( strain hardening ) and void growth ( strain softening ) , which ...
... craze zone would suddenly rupture . The presumed relative constancy of o , v ,, therefore , reflects a metastable equilibrium condition between fibrillar orientation ( strain hardening ) and void growth ( strain softening ) , which ...
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