Fatigue life predictions including the Bauschinger effect

• Published in: International journal of fatigue Vol. 33; no. 2; pp. 145 - 152
• Main Authors: Buciumeanu, M., Palaghian, L., Miranda, A.S., Silva, F.S.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.02.2011; Elsevier
• Subjects: Alloy steels; Aluminum base alloys; Applied sciences; Bauschinger effect; Bauschinger effect (BE); Exact sciences and technology; Fatigue; Fatigue (materials); Fatigue life; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Medium carbon steels; Metals. Metallurgy; Morrow; Smith–Watson–Topper (SWT); Steels; Tool steels; Two materials; Smith–Watson–Topper (SWT); Fatigue; Bauschinger effect (BE); Morrow; Fatigue life; Lifetime; Bauschinger effect; Smith-Watson-Topper (SWT); Prediction; Mechanical properties
• ISSN: 0142-1123; 1879-3452
• DOI: 10.1016/j.ijfatigue.2010.07.012

This paper proposes a modification on both the Smith–Watson–Topper and the Morrow models in order to take into account the Bauschinger effect. Two materials with substantially different Bauschinger effects, an Al7175 alloy with approximately no Bauschinger and Ck45 steel with a substantial Bauschinger effect will be assessed with the previous models. The paper discusses possible consequences of the Bauschinger effect on fatigue life of the two materials. The main objective of this paper is to demonstrate that the Bauschinger effect may play a significant role on fatigue life of materials and should then be considered in fatigue life prediction models.