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Publication Citation: A Bayesian Quantitative Nondestructive Evaluation (QNDE) Approach to Estimating Remaining Life of Aging Pressure Vessels and Piping

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Author(s): Jeffrey T. Fong; William F. Guthrie; James J. Filliben; Nathanael A. Heckert;
Title: A Bayesian Quantitative Nondestructive Evaluation (QNDE) Approach to Estimating Remaining Life of Aging Pressure Vessels and Piping
Published: January 01, 2013
Abstract: In this paper, we use a Bayesian quantitative nondestructive evaluation (QNDE) approach to estimating the remaining life of aging structures and components. Our approach depends on in-situ NDE measurements of detectable crack lengths and crack growth rates in a multi-crack region of an aging component as a basis for estimating the mean and standard deviation of its remaining life. We introduce a general theory of crack growth involving multiple cracks such that the mean and standard deviation of the initial crack lengths can be directly estimated from NDE-measured crack length data over a period of several inspection intervals. A numerical example using synthetic NDE data for high strength steels is presented to illustrate this new methodology.
Proceedings: AIP Proceedings of 39th Annual Review of Progress in QNDE
Volume: 1511
Issue: 1
Pages: pp. 1717 - 1724
Location: Denver, CO
Dates: July 15-20, 2012
Keywords: Computational methods in continuum mechanics; cracks detection; eddy-current testing; failure materials; fatigue structural failure of materials; materials testing and analysis; mechanical properties of solids; mechanical testing; metals and alloys; Monte Carlo methods in probability theory and statistics; nondestructive testing of materials; nuclear reactor safety; statistics; ultrasonic testing.
Research Areas: Math, Scientific Computing, Uncertainty Analysis
DOI: http://dx.doi.org/10.1063/1.4789248  (Note: May link to a non-U.S. Government webpage)