Statistical Models For Prediction Of The Fatigue Crack Growth In
Aircraft Service
Author(s)
N. A. Nechval, K. N. Nechval & E. K. Vasermanis
Abstract
Statistical models for prediction of the fatigue
crack growth in aircraft service
N. A. ~echval', K. N. ~echval' & E. K. vasermanis2
I Department of Applied Mathematics,
Aviation University of Riga, Latvia
2University of Latvia, Riga, Latvia
Abstract
One of the most important problems in the fatigue analysis and design of aircraft
structures is the prediction of the fatigue crack growth in service. Available inservice
inspection data for various types of aircraft indicate that the fatigue crack
damage accumulation in service involves considerable statistical variability. The
statistical nature of the fatigue crack growth is attributed to, among others, two
most important factors: (i) the statistical nature of service loads and environments
experienced by aircraft structures and (ii) the inherent fatigue crack growth
variability of materials. The objectives of this paper are to (i) describe possible
statistical models to deal with the crack growth variability, (ii) point out their
applications,
Keywords
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