The modified Carpinteri-Spagnoli (C-S) criterion is a multiaxial high-cycle fatigue criterion based on
the critical plane approach. According to such a criterion, the orientation of the critical plane is linked to both
the averaged directions of the principal stress axes and the fatigue properties of the material. The latter
dependence is taken into account through a rotational angle, ?. Then, the multiaxial fatigue strength estimation
is performed by computing an equivalent stress amplitude on the critical plane. In the present paper, some
modifications of the original ? expression are implemented in the modified C-S criterion. More precisely, such
modified expressions of ? depend on the ratio between the fatigue limit under fully reversed shear stress and
that under fully reversed normal stress (in accordance with the original expression), and can be employed for
metals ranging from mild to very hard fatigue behaviour. Some experimental data available in the literature are
compared with the theoretical results in order to verify if the modified ?expressions are able to improve the
fatigue strength estimation capability of the modified C-S criterion.
How to Cite
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.
Open Access Statement
Frattura ed Integrità Strutturale (Fracture and Structural Integrity, F&SI) is an open-access journal which means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles in this journal without asking prior permission from the publisher or the author. This is in accordance with the DOAI definition of open access.
F&SI operates under the Creative Commons Licence Attribution 4.0 International (CC-BY 4.0). This allows to copy and redistribute the material in any medium or format, to remix, transform and build upon the material for any purpose, even commercially, but giving appropriate credit and providing a link to the license and indicating if changes were made.