| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5019852 | Theoretical and Applied Fracture Mechanics | 2017 | 43 Pages |
Abstract
The paper analyzes multiaxial low cycle fatigue tests of notched specimens under proportional and non-proportional loading conditions. Strain controlled multiaxial low cycle fatigue tests were carried out using circumferentially notched round-bar specimens of type 316L stainless steel, with different stress concentration factors. The experimental results show that the crack initiation site is shifted from the notch tip. Based on this finding, a new model for life evaluation is proposed by taking into account the strain gradient in the proximity of the notch tip and the effective maximum strain range. The new model allows evaluating the fatigue life in a narrow scatter band.
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Authors
Pasquale Gallo, Stefano Bressan, Takahiro Morishita, Takamoto Itoh, Filippo Berto,