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Probabilistic Life and Reliability Analysis of Model Gas Turbine DiskIn 1939, W. Weibull developed what is now commonly known as the "Weibull Distribution Function" primarily to determine the cumulative strength distribution of small sample sizes of elemental fracture specimens. In 1947, G. Lundberg and A. Palmgren, using the Weibull Distribution Function developed a probabilistic lifing protocol for ball and roller bearings. In 1987, E. V. Zaretsky using the Weibull Distribution Function modified the Lundberg and Palmgren approach to life prediction. His method incorporates the results of coupon fatigue testing to compute the life of elemental stress volumes of a complex machine element to predict system life and reliability. This paper examines the Zaretsky method to determine the probabilistic life and reliability of a model gas turbine disk using experimental data from coupon specimens. The predicted results are compared to experimental disk endurance data.
Document ID
20030001876
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Holland, Frederic A. (NASA Glenn Research Center Cleveland, OH United States)
Melis, Matthew E. (NASA Glenn Research Center Cleveland, OH United States)
Zaretsky, Erwin V. (NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
September 7, 2013
Publication Date
October 1, 2002
Publication Information
Publication: Fifth Annual Workshop on the Application of Probabilistic Methods for Gas Turbine Engines
Subject Category
Aircraft Propulsion And Power
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle20030001844Collected WorksFifth Annual Workshop on the Application of Probabilistic Methods for Gas Turbine Engines
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