A design approach for components in ultralong fatigue life with step loading

Andrew Roiko (Corresponding Author), Y. Murakami

    Research output: Contribution to journalArticleScientificpeer-review

    10 Citations (Scopus)

    Abstract

    An overview of critical variables that affect fatigue failure with respect to steel components in ultralong life regimes is presented. The key role of hydrogen trapped by non-metallic inclusions in the ultralong life fatigue failure process is documented. The role of non-metallic inclusions on ultralong fatigue life is shown in the master curve of ODA (Optically Dark Area surrounding a non-metallic inclusion at fracture origin) growth. The master curve of ODA growth shows the correlation of the size of the ODA with the size of the non-metallic inclusion as it corresponds to fatigue life. The ability to predict the presence of
    non-metallic inclusions in steels with extreme value methods is incorporated with the master curve of ODA growth to determine the maximum threshold stress for ultralong fatigue life using the √area parameter model. Most machine components experience variable loads in service. A design approach is introduced for calculating the effects of different loading levels for ultralong fatigue life.
    Original languageEnglish
    Pages (from-to)140-149
    Number of pages10
    JournalInternational Journal of Fatigue
    Volume41
    DOIs
    Publication statusPublished - 2012
    MoE publication typeA1 Journal article-refereed
    EventInternational Symposium on Fatigue Design & Material Defects - Trondheim, Norway
    Duration: 23 May 201125 May 2011

    Fingerprint

    Fatigue Life
    Inclusion
    Fatigue of materials
    Steel
    Curve
    Extreme Values
    Machine components
    Fatigue
    Hydrogen
    Design
    Predict

    Keywords

    • Fatigue design
    • high strength steel
    • non-metallic inclusion
    • the area parameter model
    • ultralong fatigue life

    Cite this

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    title = "A design approach for components in ultralong fatigue life with step loading",
    abstract = "An overview of critical variables that affect fatigue failure with respect to steel components in ultralong life regimes is presented. The key role of hydrogen trapped by non-metallic inclusions in the ultralong life fatigue failure process is documented. The role of non-metallic inclusions on ultralong fatigue life is shown in the master curve of ODA (Optically Dark Area surrounding a non-metallic inclusion at fracture origin) growth. The master curve of ODA growth shows the correlation of the size of the ODA with the size of the non-metallic inclusion as it corresponds to fatigue life. The ability to predict the presence of non-metallic inclusions in steels with extreme value methods is incorporated with the master curve of ODA growth to determine the maximum threshold stress for ultralong fatigue life using the √area parameter model. Most machine components experience variable loads in service. A design approach is introduced for calculating the effects of different loading levels for ultralong fatigue life.",
    keywords = "Fatigue design, high strength steel, non-metallic inclusion, the area parameter model, ultralong fatigue life",
    author = "Andrew Roiko and Y. Murakami",
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    language = "English",
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    }

    A design approach for components in ultralong fatigue life with step loading. / Roiko, Andrew (Corresponding Author); Murakami, Y.

    In: International Journal of Fatigue, Vol. 41, 2012, p. 140-149.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - A design approach for components in ultralong fatigue life with step loading

    AU - Roiko, Andrew

    AU - Murakami, Y.

    PY - 2012

    Y1 - 2012

    N2 - An overview of critical variables that affect fatigue failure with respect to steel components in ultralong life regimes is presented. The key role of hydrogen trapped by non-metallic inclusions in the ultralong life fatigue failure process is documented. The role of non-metallic inclusions on ultralong fatigue life is shown in the master curve of ODA (Optically Dark Area surrounding a non-metallic inclusion at fracture origin) growth. The master curve of ODA growth shows the correlation of the size of the ODA with the size of the non-metallic inclusion as it corresponds to fatigue life. The ability to predict the presence of non-metallic inclusions in steels with extreme value methods is incorporated with the master curve of ODA growth to determine the maximum threshold stress for ultralong fatigue life using the √area parameter model. Most machine components experience variable loads in service. A design approach is introduced for calculating the effects of different loading levels for ultralong fatigue life.

    AB - An overview of critical variables that affect fatigue failure with respect to steel components in ultralong life regimes is presented. The key role of hydrogen trapped by non-metallic inclusions in the ultralong life fatigue failure process is documented. The role of non-metallic inclusions on ultralong fatigue life is shown in the master curve of ODA (Optically Dark Area surrounding a non-metallic inclusion at fracture origin) growth. The master curve of ODA growth shows the correlation of the size of the ODA with the size of the non-metallic inclusion as it corresponds to fatigue life. The ability to predict the presence of non-metallic inclusions in steels with extreme value methods is incorporated with the master curve of ODA growth to determine the maximum threshold stress for ultralong fatigue life using the √area parameter model. Most machine components experience variable loads in service. A design approach is introduced for calculating the effects of different loading levels for ultralong fatigue life.

    KW - Fatigue design

    KW - high strength steel

    KW - non-metallic inclusion

    KW - the area parameter model

    KW - ultralong fatigue life

    U2 - 10.1016/j.ijfatigue.2011.12.021

    DO - 10.1016/j.ijfatigue.2011.12.021

    M3 - Article

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    SP - 140

    EP - 149

    JO - International Journal of Fatigue

    JF - International Journal of Fatigue

    SN - 0142-1123

    ER -