Investigation of the probabilistic low cycle fatigue design curves at stress cycling
Keywords:probabilistic calculation, low cycle fatigue
This paper presents the investigation of probabilistic calculation of low cycle fatigue curves. The experiment of low cycle fatigue was made and cyclic constants were defined. Based on data obtained, design curves of equal fracture probability 15Cr2MoVA and 45 at low cycle stress limited loading were drawn. The design curves were compared with experimental data and the conclusions were made. Low cycle stress limited calculation for anisotropic materials showed a satisfactory agreement with experimental data and can be used in lifetime assessment of various power plant facilities.