Analysis of multiaxial low cycle fatigue of notched specimens for type 316L Stainless Steel under non-proportional loading

Gallo, Pasquale; Bressan, Stefano; Morishita, Takahiro; Itoh, Takamoto; Berto, Filippo

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Analysis of multiaxial low cycle fatigue of notched specimens for type 316L Stainless Steel under non-proportional loading

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Title:	Analysis of multiaxial low cycle fatigue of notched specimens for type 316L Stainless Steel under non-proportional loading
Author(s):	Gallo, Pasquale ; Bressan, Stefano ; Morishita, Takahiro ; Itoh, Takamoto ; Berto, Filippo
Date:	2017
Language:	en
Pages:	11 79-89
Department:	Department of Mechanical Engineering Ritsumeikan University Norwegian University of Science and Technology
Series:	Theoretical and Applied Fracture Mechanics, Volume 89
ISSN:	0167-8442 1872-7638
DOI-number:	10.1016/j.tafmec.2017.01.009
Keywords:	316L stainless steel, Multiaxial fatigue, Non-proportional loading, Notch
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Citation: Gallo , P , Bressan , S , Morishita , T , Itoh , T & Berto , F 2017 , ' Analysis of multiaxial low cycle fatigue of notched specimens for type 316L Stainless Steel under non-proportional loading ' , Theoretical and Applied Fracture Mechanics , vol. 89 , pp. 79-89 . https://doi.org/10.1016/j.tafmec.2017.01.009
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.

Permanent link to this item: http://urn.fi/URN:NBN:fi:aalto-201909035091 Email this Export to RefWorks QR Code Print BibTex Tweet