An aging aircraft's wing under complex multiaxial spectrum loading: Fatigue assessment and repairing

Keijo Koski (Corresponding Author), J. Tikka, Mika Bäckström, Aslak Siljander, Sauli Liukkonen, Gary Marquis

    Research output: Contribution to journalArticleScientificpeer-review

    5 Citations (Scopus)

    Abstract

    The structural responses of an aging aircraft's wing due to operational loading cycles are determined using flight measurement. The stressing in the crack initiation locations in the chemically milled wing skin is a combination of compression, tension and shear. The uniaxial fatigue assessment and observed cracking behaviour indicates that the fatigue assessment should include the multiaxial loading effects. In this paper, the multiaxial fatigue effects are considered by combining the flight measurement results with FE method and engineering judgement. To avoid or repair the cracking of the chemically milled wing skin composite patching is presented for the reconstructive action.
    Original languageEnglish
    Pages (from-to)652-656
    Number of pages5
    JournalInternational Journal of Fatigue
    Volume28
    Issue number5-6
    DOIs
    Publication statusPublished - 2006
    MoE publication typeA1 Journal article-refereed
    Event7th International Conference on Biaxial/Multiaxial Fatigue and Fracture - Berlin, Germany
    Duration: 28 Jun 20041 Jul 2004

    Fingerprint

    Cracking
    Fatigue
    Skin
    Aircraft
    Aging of materials
    Fatigue of materials
    Multiaxial Fatigue
    Crack Initiation
    Repair
    Compression
    Composite
    Engineering
    Crack initiation
    Cycle
    Compaction
    Composite materials
    Judgment

    Keywords

    • wing
    • military aircraft
    • Hawk Mk.51
    • structural fatigue

    Cite this

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    abstract = "The structural responses of an aging aircraft's wing due to operational loading cycles are determined using flight measurement. The stressing in the crack initiation locations in the chemically milled wing skin is a combination of compression, tension and shear. The uniaxial fatigue assessment and observed cracking behaviour indicates that the fatigue assessment should include the multiaxial loading effects. In this paper, the multiaxial fatigue effects are considered by combining the flight measurement results with FE method and engineering judgement. To avoid or repair the cracking of the chemically milled wing skin composite patching is presented for the reconstructive action.",
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    An aging aircraft's wing under complex multiaxial spectrum loading : Fatigue assessment and repairing. / Koski, Keijo (Corresponding Author); Tikka, J.; Bäckström, Mika; Siljander, Aslak; Liukkonen, Sauli; Marquis, Gary.

    In: International Journal of Fatigue, Vol. 28, No. 5-6, 2006, p. 652-656.

    Research output: Contribution to journalArticleScientificpeer-review

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    T1 - An aging aircraft's wing under complex multiaxial spectrum loading

    T2 - Fatigue assessment and repairing

    AU - Koski, Keijo

    AU - Tikka, J.

    AU - Bäckström, Mika

    AU - Siljander, Aslak

    AU - Liukkonen, Sauli

    AU - Marquis, Gary

    PY - 2006

    Y1 - 2006

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    AB - The structural responses of an aging aircraft's wing due to operational loading cycles are determined using flight measurement. The stressing in the crack initiation locations in the chemically milled wing skin is a combination of compression, tension and shear. The uniaxial fatigue assessment and observed cracking behaviour indicates that the fatigue assessment should include the multiaxial loading effects. In this paper, the multiaxial fatigue effects are considered by combining the flight measurement results with FE method and engineering judgement. To avoid or repair the cracking of the chemically milled wing skin composite patching is presented for the reconstructive action.

    KW - wing

    KW - military aircraft

    KW - Hawk Mk.51

    KW - structural fatigue

    U2 - 10.1016/j.ijfatigue.2005.06.053

    DO - 10.1016/j.ijfatigue.2005.06.053

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    JF - International Journal of Fatigue

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