24th Congress of International Council of the Aeronautical Sciences, 29 August-3, September 2004, Yokohama, Japan
Paper ICAS 2004-5.6.4

APPLICATION OF QUANTITATIVE MICROFRACTOGRAPHY IN DAMAGE TOLERANCE AND FATIGUE EVALUATION OF WING SPAR

J. Kunz, J. Siegl, I. Nedbal, P. Augustin*, A. Píštek*
Czech Technical University in Prague,Czech Republic ; *Brno University of Technology, Czech Republic

Keywords: damage-tolerance, fatigue, full-scale test, wing spar, quantitative fractography

Experimental study was focused on the fatigue crack growth in a model of Ayres Loadmaster LM 200 wing spar. During a full-scale fatigue test, four-point cyclic bending was applied. Limited macroscopic data were completed by results of fractographic reconstitution of fatigue process history. Similar information on locations and modes of damage due to fatigue have been substantial for damage-tolerance evaluation of structure components.

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