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)


    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
    Issue number5-6
    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



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

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