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Definition of fatigue crack growth thresholds for ferritic steels in fitness-for-service codes

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27690%2F18%3A10241972" target="_blank" >RIV/61989100:27690/18:10241972 - isvavai.cz</a>

  • Alternative codes found

    RIV/61989100:27690/18:10241974

  • Result on the web

    <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>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Definition of fatigue crack growth thresholds for ferritic steels in fitness-for-service codes

  • Original language description

    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.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • OECD FORD branch

    20501 - Materials engineering

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2018

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    ASME 2018 Pressure Vessels &amp; Piping Conference (PVP2018) : July 15-20, 2018, Prague, Czech Republic

  • ISBN

    978-0-7918-5158-6

  • ISSN

    0277-027X

  • e-ISSN

    neuvedeno

  • Number of pages

    5

  • Pages from-to

  • Publisher name

    ASME

  • Place of publication

    New York

  • Event location

    Praha

  • Event date

    Jul 15, 2018

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article