21st Congress of International Council of the Aeronautical Sciences, Melbourne, Australia, 13-18 September, 1998
Paper ICAS-98-5.7.4

ENSURING STRUCTURAL DAMAGE TOLERANCE OF ADVANCED AND AGING AIRCRAFT

Nesterenko G.I.
Central Aerohydrodynamic Institute (TsAGI), Russia

Keywords: structural damage tolerance, aging aircraft

Standardizing approaches to establishing service life for Russian transport aircraft structures are outlined. Damage tolerance criteria ensuring advanced aircraft damage tolerance are presented. The basis is given for specifying fracture toughness and crack growth rate of structural materials. Results of investigating residual strength criteria for full-scale structures having widespread fatigue damages are listed. Fatigue strength and crack resistance of new and aging aircraft structures are compared. Principles to determine corrosion damage growth duration for aircraft structures are outlined.

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