NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Scatter factor and reliability of aircraft structuresThe concept of time to first failure is utilized to perform a parameter study of scatter factors of aircraft structures. The Weibull distribution is used for estimation of characteristic and certifiable lives. Scatter factors for various Weibull-shaped parameters, fleet sizes and level of reliabilities are calculated. It is concluded that the currently used range of scatter factors (2 through 4) is too narrow for the estimation of a safe life and that a safe and economical design for structural materials with shape parameters less than 2 does not seem feasible except for very small fleet sizes and low levels of reliability.
Document ID
19730002207
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Schueller, G. I. (George Washington Univ. Washington, DC, United States)
Freudenthal, A. M. (George Washington Univ. Washington, DC, United States)
Date Acquired
September 2, 2013
Publication Date
November 1, 1972
Publication Information
Publisher: NASA
Subject Category
Structural Mechanics
Report/Patent Number
NASA-CR-2100
Accession Number
73N10934
Funding Number(s)
PROJECT: RTOP 126-14-15-03
CONTRACT_GRANT: NGR-09-010-058
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available