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Applying MIL-HDBK-1823 for POD Demonstration on a Fluorescent Penetrant System

This paper provides a practical and statistical review of the guidelines stated in MIL-HDBK-1823 regarding the number of discontinuities, the distribution of discontinuity sizes and how the sizes are distributed across the specimen standard (note that MIL-HDBK-1823 uses the term “flaw” for “discontinuity”). A general overview of the accepted POD analysis technique for fluorescent PT systems and interpretation of results will also be given, since the results of the statistical analysis can be subject to is interpretation even with a well-designed specimen standard.

References
Agresti, A., Categorical Data Analysis, New York, Wiley, 1990. Department of Defense, MIL-HDBK-1823: Non-destructive Evaluation System Reliability Assessment, 30 April 1999. Department of Defense, MIL-HDBK-1823: Non-destructive Evaluation System Reliability Assessment, draft, 28 February 2007. Lively, J.A. and T.L. Aljundi, “Fluorescent Penetrant Probability of Detection Demonstrations Performed for Space Propulsion. CP657,” Review of Quantitative Nondestructive Evaluation, Vol. 22B, D.O. Thompson and D.E. Chimenti, eds., Melville, New York, AIP, 2003, pp. 1891–1898. Lloyd, C.J., Statistical Analysis of Categorical Data, New York, Wiley, 1999. NASA, NASA-STD-5009: Nondestructive Evaluation Requirements for Fracture Critical Metallic Components, 2008. NASA, NASA-STD-5019: Fracture Control Requirements for Space Flight Hardware, 2008. Neter, John, Michael Kutner, Christopher Nachtsheim and William Wasserman, Applied Linear Statistical Models, fourth edition, Boston, McGraw-Hill, 1996.
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