Energy Based Characterization of Fatigue Behaviour of Cyclically Unstable Materials
The paper presents a definition of a new energy based parameter which allows to better describe fatigue proprieties of materials, especially cyclically unstable materials in comparison with the Lagoda-Macha parameter. The proposed parameter distinguishes positive and negative work of external force and depends on the sign of the stresses in paths of strain in materials. It is used in laboratory tests for control of a fatigue process on hydraulic stand. A close-loop control system has been equipped with computer program based on MATLAB/Simulink module.
Zdzislaw Gosiewski and Zbigniew Kulesza
E. Macha et al., "Energy Based Characterization of Fatigue Behaviour of Cyclically Unstable Materials", Solid State Phenomena, Vols. 147-149, pp. 512-517, 2009