## Fatigue of Engineering Plastics |

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Page 13

6 ; 66 ] : shear ( or shear - resolvable ) yielding , and

Fig . 1 . 4 ) . Regardless of the mode , the molecular basis is considered to be the

occurrence of large - scale changes in chain conformation resulting from the ...

6 ; 66 ] : shear ( or shear - resolvable ) yielding , and

**normal**- stress yielding ( seeFig . 1 . 4 ) . Regardless of the mode , the molecular basis is considered to be the

occurrence of large - scale changes in chain conformation resulting from the ...

Page 18

... to a rate - and * The octahedral yield stress is the stress acting on a plane

having a

, that is , the

... to a rate - and * The octahedral yield stress is the stress acting on a plane

having a

**normal**that makes the same angle to all those principal stress directions, that is , the

**normal**defined by the equation loul = 10221 = 1033 ) ( see Fig . 1 .Page 20

Considerable evidence [ 66 ] suggests that the

obeys a criterion of the form 101 – 021 A + B / 11 , ( 1 . 2 ) where o , and O2 are

the major and minor principal stresses , A and B the temperature - and

environment ...

Considerable evidence [ 66 ] suggests that the

**normal**stress yielding processobeys a criterion of the form 101 – 021 A + B / 11 , ( 1 . 2 ) where o , and O2 are

the major and minor principal stresses , A and B the temperature - and

environment ...

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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