Details

Autor(en) / Beteiligte

• Vantadori, Sabrina
• Carpinteri, Andrea
• Luciano, Raimondo
• Ronchei, Camilla
• Scorza, Daniela
• Zanichelli, Andrea

Titel

Mean stress effect on fatigue life estimation for Inconel 718 alloy

Ist Teil von

• International journal of fatigue, 2020-04, Vol.133, p.105391, Article 105391

Ort / Verlag

Kidlington: Elsevier Ltd

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •Fatigue life of Inconel 718 specimens under uniaxial/biaxial loading is computed.•The criterion by Carpinteri et al. is used in conjunction with a SWT type of relationship.•An equivalent strain acting on the critical plane is defined.•The mean stress effect is taken into account in the SWT type of relationship.•The novel formulation is validated by using data from the literature. Uniaxial and biaxial fatigue tests related to Inconel 718 specimens are analysed using the critical plane-based multiaxial fatigue criterion by Carpinteri et al. in conjunction with a Smith-Watson-Topper (SWT) type of relationship. More precisely, specimens subjected to proportional and non-proportional loading under strain control are examined, such loadings being characterised by both zero and non-zero mean values. Fatigue life is computed through the novel formulation proposed here and compared with the experimental fatigue life in terms of number of loading cycles needed to form a surface crack whose length is equal to 1 mm.