Application of selected multi-axial fatigue criteria on the results of non-proportional fatigue experiments

Frantisek Fojtik, Jan Fuxa, Zdeněk Poruba


The contribution describes the experimental results obtained from the combined loading of the specimens in the field of high-cycle fatigue. Those specimens were manufactured from common construction steel 11523.1, melt T31052. The following experiments were performed: The first set of the specimen was loaded by the alternating bending amplitude. The second set was loaded by the amplitude of the bending in combination with constant inner overpressure. The results were evaluated by the conjugated strength criterion and another generally used multiaxial fatigue criteria. The stress-strain analysis of the specimens by FEM was performed to determine parameters (constants) of particular strength criteria.


combined loading; experiment; high-cycle fatigue; multiaxial analysis

Full Text: