Development of Scaling Parameter SR for Negative Stress Ratios R Based on Trend in Experimental Data for Fatigue Crack Growth Rates of Austenitic Stainless Steels for ASME Code Section XI
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F25%3A10257478" target="_blank" >RIV/61989100:27360/25:10257478 - isvavai.cz</a>
Result on the web
<a href="https://asmedigitalcollection.asme.org/pressurevesseltech/article-abstract/147/2/021201/1210949/Development-of-Scaling-Parameter-SR-for-Negative?redirectedFrom=fulltext" target="_blank" >https://asmedigitalcollection.asme.org/pressurevesseltech/article-abstract/147/2/021201/1210949/Development-of-Scaling-Parameter-SR-for-Negative?redirectedFrom=fulltext</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1115/1.4067484" target="_blank" >10.1115/1.4067484</a>
Alternative languages
Result language
angličtina
Original language name
Development of Scaling Parameter SR for Negative Stress Ratios R Based on Trend in Experimental Data for Fatigue Crack Growth Rates of Austenitic Stainless Steels for ASME Code Section XI
Original language description
Fatigue crack growth rates da/dN for stainless steels in air environment are provided by the ASME Code Section XI. The fatigue crack growth rates are given by da/dN = CF(ΔK)n, where CF is the fatigue crack growth rate coefficient, n is the fatigue crack growth rate exponent and ΔK is the stress intensity factor range. The coefficient CF contains a temperature parameter ST, and a scaling parameter SR, which is a function of the stress ratio R. When the stress ratio R is positive from 0 to 1, the parameter SR increases with the increasing ratio R, and da/dN increases with the increasing stress ratio R. When R is less than 0, SR = 1. Hence, fatigue crack growth rates under negative stress ratios are independent of stress ratios according to the ASME Code Section XI. However, from the results of literature survey, experimental data reveal that the fatigue crack growth rates decrease with decreasing R ratios below zero, i.e., negative stress ratios, when being expressed by da/dN = CF(ΔK)n, where ΔK is the full range of the stress intensity factor. The objective of this paper is to assess fatigue crack growth rates under such negative stress ratios for stainless steels in air environment. An equation determined from trends in experimental data surveyed in this study is proposed for negative R ratios to calculate the parameter SR for the ASME Code Section XI, Appendix Y.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20500 - Materials engineering
Result continuities
Project
<a href="/en/project/EF17_048%2F0007373" target="_blank" >EF17_048/0007373: Damage Prediction of Structural Materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Pressure Vessel Technology, Transactions of the ASME
ISSN
0094-9930
e-ISSN
1528-8978
Volume of the periodical
147
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
021201
UT code for WoS article
001437262800004
EID of the result in the Scopus database
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