Fatigue of Engineering Plastics |
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Page 81
... values as AK approaches some limiting threshold value AKth and increase to very high values as Kmax approaches K. The dependence of fatigue crack propagation in polymers and metals on AK has been re- viewed previously and may be ...
... values as AK approaches some limiting threshold value AKth and increase to very high values as Kmax approaches K. The dependence of fatigue crack propagation in polymers and metals on AK has been re- viewed previously and may be ...
Page 103
... value at low AR levels suggests that the kinetics of fatigue crack growth in this AK regime are strongly influenced by the test environment . Note that at higher AR values , the slope of the curve decreases along with the FSF value that ...
... value at low AR levels suggests that the kinetics of fatigue crack growth in this AK regime are strongly influenced by the test environment . Note that at higher AR values , the slope of the curve decreases along with the FSF value that ...
Page 135
... values obtained from tensile tests and dynamic measurements differ by as much as a factor of two [ 41 ] . A striking correlation of polymer fatigue data is evident , however , between values of AK * ( the value of AK required to drive a ...
... values obtained from tensile tests and dynamic measurements differ by as much as a factor of two [ 41 ] . A striking correlation of polymer fatigue data is evident , however , between values of AK * ( the value of AK required to drive a ...
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