Equi-biaxial loading effect on austenitic stainless steel fatigue life

S. Bradaï, C. Gourdin, S. Courtin, J. C. Le Roux, C. Gardin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Fatigue lifetime assessment is essential in the design of structures. Under-estimated predictions may result in unnecessary in service inspections. Conversely, over-estimated predictions may have serious consequences on the integrity of structures. In some nuclear power plant components, the fatigue loading may be equi-biaxial because of thermal fatigue. So the potential impact of multiaxial loading on the fatigue life of components is a major concern. Meanwhile, few experimental data are available on austenitic stainless steels. It is essential to improve the fatigue assessment methodologies to take into account the potential equi-biaxial fatigue damage. Hence this requires obtaining experimental data on the considered material with a strain tensor in equi-biaxial tension. The aim of this paper is to present the experimental results obtained with a device "FABIME2" developed in the LISN in collaboration with EDF and AREVA. The specimen geometry is optimized by FEM (Cast3M) simulation in order to obtain a stress concentration localized in the central region during the test. This device allows accurate quantification of the effects of both equi-biaxial strain state as well as structure (such as mean stress) on the fatigue life.

Original languageEnglish
Title of host publicationDesign and Analysis
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791846001
DOIs
Publication statusPublished - 1 Jan 2014
Externally publishedYes
EventASME 2014 Pressure Vessels and Piping Conference, PVP 2014 - Anaheim, United States
Duration: 20 Jul 201424 Jul 2014

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume3
ISSN (Print)0277-027X

Conference

ConferenceASME 2014 Pressure Vessels and Piping Conference, PVP 2014
Country/TerritoryUnited States
CityAnaheim
Period20/07/1424/07/14

Fingerprint

Dive into the research topics of 'Equi-biaxial loading effect on austenitic stainless steel fatigue life'. Together they form a unique fingerprint.

Cite this