Fatigue of Engineering Plastics |
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Page 81
The fatigue crack growth rate per cycle da / dN is determined from such a curve at
any value of crack length by graphical procedures or by computation . For most
specimen configurations , the crack growth rate increases with increasing crack ...
The fatigue crack growth rate per cycle da / dN is determined from such a curve at
any value of crack length by graphical procedures or by computation . For most
specimen configurations , the crack growth rate increases with increasing crack ...
Page 107
proposed that fatigue crack propagation rates could be related to the cracktip
stress intensity factor with a relationship of the form da / dN = B2 " , ( 3 . 15 )
where ß is a function of loading frequency , material properties , and environment
, n a ...
proposed that fatigue crack propagation rates could be related to the cracktip
stress intensity factor with a relationship of the form da / dN = B2 " , ( 3 . 15 )
where ß is a function of loading frequency , material properties , and environment
, n a ...
Page 108
I Pa 10 da / dN , mm / cycle R 0 . 1 R = 0 . 1 R : 0 . 5 R = 0 . 5 ( a ) J ( b ) 0 . 2 1 . 0
5 . 0 1 . 0 10 . 0 AK , MPovinh , ( MPOVIT ) 2 Fig . 3 . 21 Fatigue crack propagation
in polycarbonate at two mean stress levels as a function of ( a ) AK and ( b ) a .
I Pa 10 da / dN , mm / cycle R 0 . 1 R = 0 . 1 R : 0 . 5 R = 0 . 5 ( a ) J ( b ) 0 . 2 1 . 0
5 . 0 1 . 0 10 . 0 AK , MPovinh , ( MPOVIT ) 2 Fig . 3 . 21 Fatigue crack propagation
in polycarbonate at two mean stress levels as a function of ( a ) AK and ( b ) a .
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Contents
Fatigue Crack Propagation | 74 |
Fatigue Fracture Micromechanisms in Engineering Plastics | 146 |
Composite Systems | 184 |
Copyright | |
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Common terms and phrases
addition applied associated bands behavior changes component composites constant corresponding crack growth rate crack tip craze curve cycles cyclic da/dN damage decrease deformation depend discontinuous discussed effect energy engineering examined example exist expected experiments fact factor failure fatigue crack fatigue crack propagation FCP rates fibers fracture fracture surface frequency function given greater higher important increase initial involving J. A. Manson limits loading lower material matrix mean mechanical metals modulus molecular notched noted nylon 66 observed occur plastic PMMA polymeric polymers polystyrene possible properties R. W. Hertzberg range region relationship relative reported resistance respect response rise rubber samples sensitivity shear showed significant similar Skibo solids specimen static strain strength stress stress intensity striations structure studies temperature tensile thermal tion toughness values volume yield York zone