Fatigue of Engineering Plastics |
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Page 129
... expected to result in a decrease in the constraint ( lower E ) exerted on the crack tip by the bulk material ahead of it , and hence an increase in the FCP rate at a given value of AK . In other words , the strain per loading cycle △ ɛ ...
... expected to result in a decrease in the constraint ( lower E ) exerted on the crack tip by the bulk material ahead of it , and hence an increase in the FCP rate at a given value of AK . In other words , the strain per loading cycle △ ɛ ...
Page 192
... expected ( Fig . 5.6 ) , the modulus of a rubbery phase - glassy matrix composite is decreased in proportion to the volume fraction of rubbery phase [ 17 ] . Clearly the effect of this is to lower the con- straint imposed by the matrix ...
... expected ( Fig . 5.6 ) , the modulus of a rubbery phase - glassy matrix composite is decreased in proportion to the volume fraction of rubbery phase [ 17 ] . Clearly the effect of this is to lower the con- straint imposed by the matrix ...
Page 195
... expected to change the viscoelastic state by softening of whatever volume is subjected to the heating ( from the ... expected for crazing ) , followed by rupture of the craze fibrils as the crack passes through the craze . The occasional ...
... expected to change the viscoelastic state by softening of whatever volume is subjected to the heating ( from the ... expected for crazing ) , followed by rupture of the craze fibrils as the crack passes through the craze . The occasional ...
Contents
Fatigue Crack Propagation | 74 |
Fatigue Fracture Micromechanisms in Engineering Plastics | 146 |
Composite Systems | 184 |
Copyright | |
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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 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