Fatigue, residual strength and non-destructive tests of an aging aircraft's wing detail

Keijo Koski (Corresponding Author), Aslak Siljander, Mika Bäckström, Sauli Liukkonen, Juha Juntunen, Matti Sarkimo, Kari Lahdenperä, J. Tikka, R. Lahtinen

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    3 Citations (Scopus)


    This study concentrates on fatigue, residual strength and non-destructive tests of an aging aircraft’s wing detail of the Finnish Air Force’s Hawk Mk.51 jet trainer. The studied detail was the integral stiffener with a drain hole near the wing root. Fatigue tests were deemed necessary to verify experimentally the analytically observed short fatigue life, significant crack growth rates and eventually to re-assess the detail’s inspection period for the fleet jets. The results of the study have been utilized e.g. at the complementary type approval accomplished for the Finnish Air Force’s Hawk.
    Original languageEnglish
    Pages (from-to)1089-1094
    Number of pages6
    JournalInternational Journal of Fatigue
    Issue number6
    Publication statusPublished - 2009
    MoE publication typeA1 Journal article-refereed
    EventInternational Conference on Damage Tolerance of Aircraft Structures, DTAS2007 - Delft, Netherlands
    Duration: 25 Sep 200728 Sep 2007



    • jet trainer
    • drain hole
    • wing
    • fatigue test
    • residual strength test
    • non-destructive test

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