THE INFLUENCE OF NOTCH PLASTICITY ON SHORT FATIGUE CRACK BEHAVIOUR

— A study has been made of fatigue crack formation and growth at the root of different notch profiles in a structural steel subjected to fully reversed tension‐compression loading. The scale of stage I microstructural crack growth at notches decreased with increasing notch root strain and was compar...

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Veröffentlicht in:	Fatigue & fracture of engineering materials & structures 1994-02, Vol.17 (2), p.235-242
Hauptverfasser:	Ahmad, H. Y., de los Rios, E. R., Yates, J. R.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences CRACK PROPAGATION Exact sciences and technology Fatigue FRACTURE MECHANICS MATERIALS SCIENCE MATHEMATICAL MODELS Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy MICROSTRUCTURE PLASTICITY STEELS
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Zusammenfassung:	— A study has been made of fatigue crack formation and growth at the root of different notch profiles in a structural steel subjected to fully reversed tension‐compression loading. The scale of stage I microstructural crack growth at notches decreased with increasing notch root strain and was comparable to the size of stage I cracks in shallow hourglass profile specimens at the same strain. Stage II crack growth rates were faster within the notch plastic field than in the elastic stress field of the bulk material.
ISSN:	8756-758X 1460-2695
DOI:	10.1111/j.1460-2695.1994.tb00803.x