Reliability Assessment of Aircraft Structures Based on Probabilistic Interpretation of the Scatter Factor
Abstract
The 'scatter factor' S as used in fatigue design of aircraft is defined as the ratio between the location parameter (estimate) of the 'population' of all aircraft, obtained from n full-scale tests, and the first failure in a fleet of m aircraft. Introducing the Third Asymptotic distribution of smallest values for the fatigue life of the population, this definition produces a Pareto-type distribution of the scatter-factor, on the basis of which S can be related to the numbers n and m and the reliability level R. Tables of S for different combinations of n, m, R and the 'minimium fatigue life' are evaluated. Useful values of the scatter factor for different materials and purposes are suggested.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1975
- Accession Number
- ADA014359
Entities
People
- Alfred M. Freudenthal