Fatigue Notch sensitivity of steel blunt-notched specimens

MIRCO DANIEL CHAPETTI; TAGAWA, T; MIYATA, T

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (PRINT)

Blackwell Science Ltd.

Año: 2002 vol. 25 p. 629 - 634

8756-758X

The notch sensitivity of three steels with similar plain fatigue limit was analyzed and modeled. The analysis was made by using a model previously derived that estimated the fatigue limit of blunt notched components by means of the parameter ktd defined as the stress concentration introduced by the notch at a distance d from the notch root surface, equal to the distance between microstructural barriers. The analyses show how the first two or three microstructural barriers define the fatigue limit and the fatigue notch sensitivity of blunt notched specimens