Development of a Robust Procedure for the Evaluation of Striation Spacings in Low Cycle Fatigue Specimens Tested in a Simulated PWR Environment

Benjamin Howe, Jonathan Mann, Zaiqing Que, Caitlin Huotilainen, Fabio Scenini, Grace M. Burke

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

2 Citations (Scopus)

Abstract

A pressurized water reactor primary environment can have a deleterious effect on the fatigue lifetime of austenitic stainless steels. There is a need to develop a greater understanding behind the effect of a pressurized water reactor primary environment on the fatigue behaviour of austenitic stainless steels. One of the ways that we can improve our mechanistic understanding is by carrying out striation spacing analysis. Striation counting is a widely used technique in fatigue failure investigations where it is typically used to infer information on crack progression, including the estimation of propagation rates and number of applied loading cycles. Standardised procedures for performing striation counting are uncommon, especially for environmental fatigue in a high temperature pressurized water reactor primary water environment where differences in fracture surface morphology and oxide coverage can lead to additional complications in performing an analysis. One of the main goals of the EU Horizon 2020 INCEFA-SCALE project is to develop an improved mechanistic understanding of fatigue in these systems through extensive characterisation of laboratory tested specimens. As part of this work, this paper describes the development of a standardised and robust striation counting procedure for the low cycle fatigue of austenitic stainless steels operating in both air and simulated pressurized water reactor environments. Additionally, results are presented from round robin exercises that involved eight partners of the INCEFA-SCALE consortium.
Original languageEnglish
Title of host publicationASME 2022 Pressure Vessels and Piping Conference
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages10
Volume4A
ISBN (Electronic)978-0-7918-8617-5
DOIs
Publication statusPublished - 4 Nov 2022
MoE publication typeA4 Article in a conference publication
EventASME 2022 Pressure Vessels and Piping Conference, PVP 2022 - Las Vegas, United States
Duration: 17 Jul 202222 Jul 2022

Conference

ConferenceASME 2022 Pressure Vessels and Piping Conference, PVP 2022
Country/TerritoryUnited States
CityLas Vegas
Period17/07/2222/07/22

Keywords

  • environmentally assisted fatigue
  • pressurized water reactor
  • stainless steel
  • Stainless Steel
  • Environmentally Assisted Fatigue
  • Pressurized Water Reactor

Fingerprint

Dive into the research topics of 'Development of a Robust Procedure for the Evaluation of Striation Spacings in Low Cycle Fatigue Specimens Tested in a Simulated PWR Environment'. Together they form a unique fingerprint.

Cite this