Abstract
In the present work, a new multiaxial fatigue model is proposed for metallic material with small defects. This model correlates the uniaxial fatigue limit obtained from the area parameter of a high strength steel containing small defect with values associated with the amplitude of the principal stresses, whose calculation for non-proportional loadings is not trivial. The performance of the model was evaluated with experimental data from AISI 4140 steel, under various loading conditions, in which smooth cylindrical bars were considered, regarding: (i) the effect of non-metallic inclusions in the material, and (ii) superficial micro hole with a straight bottom machined in the material (550 μm in diameter and depth). The proposed model has provided accurate fatigue strength estimates with average error not exceeding 16 %.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
