Establishing a multi-laboratory test plan for environmentally assisted fatigue

Research output: Contribution to report/book/conference proceedingsIn-proceedings paper


  • Matthias Bruchhausen
  • Kevin Mottershead
  • Caitlin Hurley
  • Thomas Métais
  • Roman Cicero
  • Marc Vankeerberghen
  • Jean-Christophe Le Roux

Institutes & Expert groups

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The European project INCEFA+ will characterize environmental fatigue in pressurized water reactor (PWR) conditions. The aim is to develop new guidelines for assessing environmental fatigue damage susceptibility of nuclear power plant (NPP) components. The consortium consists of 16 public and private organizations from across Europe. The project is structured in two phases: the first phase is an extensive fatigue testing program; in the second phase a procedure for estimating the environmental fatigue degradation of the materials will be formulated.
During the test phase a selection of austenitic stainless steels employed in NPPs will be characterized with regard to fatigue. The test matrix will focus on the effects of mean strain, strain amplitude, hold time periods and surface roughness on fatigue life. Sensitivities to these parameters will be tested in PWR environments with additional tests in air for reference purposes. Especially the study of hold time effects will lead to very long testing times limiting the total number of tests. It is therefore crucial to establish a test matrix that allows studying the principal effects of interest while taking into account the nuisance effects like different specimen geometries, particular material microstructures, and other laboratory-dependent factors that may not be well controlled. Methods and considerations for establishing a single test matrix are presented in this work.


Original languageEnglish
Title of host publicationAmerican Society for Testing and Materials Selected Technical Papers
Subtitle of host publicationFatigue and Fracture Test Planning, Test Data Acquisitions and Analysis
Number of pages24
Publication statusPublished - May 2016
Event2016 - Symposium on Fatigue and Fracture Test Planning, Test Data Acquisitions and Analysis - San Antonio, United States
Duration: 4 May 20165 May 2016

Publication series

NameJournal of ASTM International
PublisherASTM International
ISSN (Print)1546-962X


Conference2016 - Symposium on Fatigue and Fracture Test Planning, Test Data Acquisitions and Analysis
CountryUnited States
CitySan Antonio


  • Design of Experiments (DoE), Environmentally assisted fatigue (EAF), round robin, Nuclear Power Plant (NPP), Pressurized Water Reactor (PWR)

ID: 6776262