Details

Autor(en) / Beteiligte

• Tricoteaux, A.
• Fardoun, F.
• Degallaix, S.
• Sauvage, F.

Titel

FATIGUE CRACK INITIATION LIFE PREDICTION IN HIGH STRENGTH STRUCTURAL STEEL WELDED JOINTS

Ist Teil von

• Fatigue & fracture of engineering materials & structures, 1995-02, Vol.18 (2), p.189-200

Ort / Verlag

Oxford, UK: Blackwell Publishing Ltd

Erscheinungsjahr

1995

Quelle

Wiley Online Library Journals Frontfile Complete

Beschreibungen/Notizen

• The local approach method is used to calculate the fatigue crack initiation/early crack growth lives (Ni) in high strength structural steel weldments. Weld‐toe geometries, welding residual stresses and HAZ (heat affected zone) cyclic mechanical properties are taken into account in the Ni estimation procedure. Fatigue crack initiation lives are calculated from either a Basquin type or a Manson‐Collin type equation. The local (HAZ) stress and strain amplitudes and the local mean stress are determined from an analysis based on the Neuber rule and the Molski‐Glinka energy approach. The accuracy of the different methods is evaluated and discussed. Finally the previous methods are used with HAZ cyclic mechanical properties estimated from hardness measurements.