A rotating bending approach for determination of low-cycle fatigue parameters

• Published in: International journal of fatigue Vol. 32; no. 10; pp. 1724 - 1730
• Main Authors: Knez, M., Glodež, S., Ružička, M., Kramberger, J.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01-10-2010; Elsevier
• Subjects: Applied sciences; Bending fatigue; Bending moments; Exact sciences and technology; Fatigue; Fatigue (materials); Fatigue life; Fatigue testing; High strength steel; High strength steels; Low cycle fatigue; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; Rotating; Rotating bending test; Rotating bending test; Fatigue life; Low-cycle fatigue; High strength steel; Mechanical properties; Rotating beam fatigue test; Low cycle fatigue; Strength; Bending test; Low-cyde fatigue
• ISSN: 0142-1123; 1879-3452
• DOI: 10.1016/j.ijfatigue.2010.03.014

A rotating bending approach for determination of low-cycle fatigue parameters is presented. The stress ratio
R
=
−1 is induced on a specimen loaded with a pure bending moment, and exposed to the rotation with respect of its longitudinal axis. The basic concept of the specially designed testing machine and its characteristics are also illustrated in the paper. The developed testing machine and theoretical approach were then used for determination of low-cycle fatigue parameters of high strength steel S1100Q. Finally, the main advantages of the proposed procedure compared to the uniaxial strain-controlled fatigue testing according to the ASTM E 606 standard are presented.