An investigation of the prediction accuracy for volume based HCF models using scaled geometries and scaled loading
2015 (English)In: International Journal of Fatigue, ISSN 0142-1123, E-ISSN 1879-3452, Vol. 82, no 2, 317-324 p.Article in journal (Refereed) Published
he prediction accuracy for the volume based Weibull- and V* high cycle fatigue models is investigated and compared to the point method. A high number of fatigue tests are performed in rotating bending for single notched cylindrical specimens manufactured in a 12% Cr-steel, a high quality structural steel. The specimens are designed with different highly stressed volume and stress gradient by scaling the geometry, but with the same stresses at the corresponding scaled points. Thus, the maximum stress in the notch is the same. Experiments are performed for three specimen sizes at several stress levels. The volume based Weibull- and V*-models, as well as the point stress method are fitted to the experimental results. Based on the results, the V*-model is favored for design purposes.
Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 82, no 2, 317-324 p.
HCF, Size effect, Scaled geometries, Weakest-link, Failure probability
Research subject Solid Mechanics
IdentifiersURN: urn:nbn:se:kth:diva-160353DOI: 10.1016/j.ijfatigue.2015.04.024ISI: 000365365900021ScopusID: 2-s2.0-84959557264OAI: oai:DiVA.org:kth-160353DiVA: diva2:789467
QC 201502192015-02-192015-02-192016-02-22Bibliographically approved