Definition of fatigue crack growth thresholds for ferritic steels in fitness-for-service codes
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27690%2F18%3A10241974" target="_blank" >RIV/61989100:27690/18:10241974 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/61989100:27690/18:10241972
Výsledek na webu
<a href="http://dx.doi.org/10.1115/PVP201884940" target="_blank" >http://dx.doi.org/10.1115/PVP201884940</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1115/PVP201884940" target="_blank" >10.1115/PVP201884940</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Definition of fatigue crack growth thresholds for ferritic steels in fitness-for-service codes
Popis výsledku v původním jazyce
Fatigue crack growth rates are expressed as a function of the stress intensity factor ranges. The fatigue crack growth thresholds are important characteristics of fatigue crack growth assessment for the integrity of structural components. Almost all materials used in these fatigue tests are ferritic steels. As a result, the reference fatigue crack growth rates and the fatigue crack growth thresholds for ferritic steels were established as rules and they were provided by many fitness-for-service (FFS) codes. However, the thresholds are not well defined in the range of negative stress ratio. There are two types of thresholds under the negative stress ratio. That is, constant thresholds and increment of thresholds with decreasing stress ratios. The objective of this paper is to introduce the thresholds provided by FFS codes and to analyze the thresholds using crack closure. In addition, based on the experimental data, definition of the threshold is discussed to apply to FFS codes. Finally, threshold for ferritic steels under the entirely condition of stress ratio is proposed to the ASME Code Section XI. Copyright (C) 2018 ASME.
Název v anglickém jazyce
Definition of fatigue crack growth thresholds for ferritic steels in fitness-for-service codes
Popis výsledku anglicky
Fatigue crack growth rates are expressed as a function of the stress intensity factor ranges. The fatigue crack growth thresholds are important characteristics of fatigue crack growth assessment for the integrity of structural components. Almost all materials used in these fatigue tests are ferritic steels. As a result, the reference fatigue crack growth rates and the fatigue crack growth thresholds for ferritic steels were established as rules and they were provided by many fitness-for-service (FFS) codes. However, the thresholds are not well defined in the range of negative stress ratio. There are two types of thresholds under the negative stress ratio. That is, constant thresholds and increment of thresholds with decreasing stress ratios. The objective of this paper is to introduce the thresholds provided by FFS codes and to analyze the thresholds using crack closure. In addition, based on the experimental data, definition of the threshold is discussed to apply to FFS codes. Finally, threshold for ferritic steels under the entirely condition of stress ratio is proposed to the ASME Code Section XI. Copyright (C) 2018 ASME.
Klasifikace
Druh
D - Stať ve sborníku
CEP obor
—
OECD FORD obor
20501 - Materials engineering
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2018
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název statě ve sborníku
ASME 2018 Pressure Vessels & Piping Conference (PVP2018) : July 15-20, 2018, Prague, Czech Republic
ISBN
978-0-7918-5158-6
ISSN
0277-027X
e-ISSN
—
Počet stran výsledku
7
Strana od-do
7
Název nakladatele
ASME
Místo vydání
New York
Místo konání akce
Praha
Datum konání akce
15. 7. 2018
Typ akce podle státní příslušnosti
WRD - Celosvětová akce
Kód UT WoS článku
—