Calculated Shoulder to Gauge Ratio of Fatigue Specimens in PWR Environment
A ratio of shoulder to gauge displacements (S2G) is calculated for three different fatigue specimens in a pressurized water environment. This ratio needs to be known beforehand to determine the applied shoulder displacements during the experiment that would result in the desired strain amplitude in...
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doaj-d0a372054de24f709e42a89ee09d93872021-02-25T00:05:13ZengMDPI AGMetals2075-47012021-02-011137637610.3390/met11030376Calculated Shoulder to Gauge Ratio of Fatigue Specimens in PWR EnvironmentIgor Simonovski0Alec Mclennan1Kevin Mottershead2Peter Gill3Norman Platts4Matthias Bruchhausen5Joshua L. Waters6Marc Vankeerberghen7Germán Barrera Moreno8Sergio Arrieta Gomez9Radek Novotny10European Commission, Joint Research Centre, Westerduinweg 3, 1755 ZG Petten, The NetherlandsJacobs, Walton House 404 Faraday Street, Warrington WA3 6GA, UKJacobs, Walton House 404 Faraday Street, Warrington WA3 6GA, UKJacobs, Walton House 404 Faraday Street, Warrington WA3 6GA, UKJacobs, Walton House 404 Faraday Street, Warrington WA3 6GA, UKEuropean Commission, Joint Research Centre, Westerduinweg 3, 1755 ZG Petten, The NetherlandsJacobs, Walton House 404 Faraday Street, Warrington WA3 6GA, UKNuclear Materials Science Institute, Studiecentrum voor Kernenergie, Centre d'Étude de l’Énergie Nucléaire (SCK CEN), Boeretang 200, 2400 Mol, BelgiumCentro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avenida Complutense 40, 28040 Madrid, SpainLaboratory of Materials Science and Engineering, University of Cantabria (UNICAN), Avda. de los Castros, s/n. 39005 Santander, SpainEuropean Commission, Joint Research Centre, Westerduinweg 3, 1755 ZG Petten, The NetherlandsA ratio of shoulder to gauge displacements (S2G) is calculated for three different fatigue specimens in a pressurized water environment. This ratio needs to be known beforehand to determine the applied shoulder displacements during the experiment that would result in the desired strain amplitude in the gauge section. Significant impact of both the applied constitutive law and specimen geometry on the S2G is observed. The calculation using the fully elastic constitutive law results in the highest S2G values and compares very well with the analytical values. However, this approach disregards the plastic deformation within the specimens that mostly develops in the gauge section. Using the constitutive laws derived from actual fatigue curves captures the material behaviour under cyclic loading better and results in lower S2G values compared to the ones obtained with the fully elastic constitutive law. Calculating S2G values using elastic–plastic constitutive law based on the monotonic uniaxial tensile test should be avoided as they are significantly lower compared to the ones computed with elastic–plastic laws derived from hysteresis loops at half-life.https://www.mdpi.com/2075-4701/11/3/376environmental fatigue304 stainless steelairPWR primary water300 °C |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Igor Simonovski Alec Mclennan Kevin Mottershead Peter Gill Norman Platts Matthias Bruchhausen Joshua L. Waters Marc Vankeerberghen Germán Barrera Moreno Sergio Arrieta Gomez Radek Novotny |
spellingShingle |
Igor Simonovski Alec Mclennan Kevin Mottershead Peter Gill Norman Platts Matthias Bruchhausen Joshua L. Waters Marc Vankeerberghen Germán Barrera Moreno Sergio Arrieta Gomez Radek Novotny Calculated Shoulder to Gauge Ratio of Fatigue Specimens in PWR Environment Metals environmental fatigue 304 stainless steel air PWR primary water 300 °C |
author_facet |
Igor Simonovski Alec Mclennan Kevin Mottershead Peter Gill Norman Platts Matthias Bruchhausen Joshua L. Waters Marc Vankeerberghen Germán Barrera Moreno Sergio Arrieta Gomez Radek Novotny |
author_sort |
Igor Simonovski |
title |
Calculated Shoulder to Gauge Ratio of Fatigue Specimens in PWR Environment |
title_short |
Calculated Shoulder to Gauge Ratio of Fatigue Specimens in PWR Environment |
title_full |
Calculated Shoulder to Gauge Ratio of Fatigue Specimens in PWR Environment |
title_fullStr |
Calculated Shoulder to Gauge Ratio of Fatigue Specimens in PWR Environment |
title_full_unstemmed |
Calculated Shoulder to Gauge Ratio of Fatigue Specimens in PWR Environment |
title_sort |
calculated shoulder to gauge ratio of fatigue specimens in pwr environment |
publisher |
MDPI AG |
series |
Metals |
issn |
2075-4701 |
publishDate |
2021-02-01 |
description |
A ratio of shoulder to gauge displacements (S2G) is calculated for three different fatigue specimens in a pressurized water environment. This ratio needs to be known beforehand to determine the applied shoulder displacements during the experiment that would result in the desired strain amplitude in the gauge section. Significant impact of both the applied constitutive law and specimen geometry on the S2G is observed. The calculation using the fully elastic constitutive law results in the highest S2G values and compares very well with the analytical values. However, this approach disregards the plastic deformation within the specimens that mostly develops in the gauge section. Using the constitutive laws derived from actual fatigue curves captures the material behaviour under cyclic loading better and results in lower S2G values compared to the ones obtained with the fully elastic constitutive law. Calculating S2G values using elastic–plastic constitutive law based on the monotonic uniaxial tensile test should be avoided as they are significantly lower compared to the ones computed with elastic–plastic laws derived from hysteresis loops at half-life. |
topic |
environmental fatigue 304 stainless steel air PWR primary water 300 °C |
url |
https://www.mdpi.com/2075-4701/11/3/376 |
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