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Reliably Detectable Flaw Size for NDE Methods that Use CalibrationProbability of detection (POD) analysis is used in assessing reliably detectable flaw size in nondestructive evaluation (NDE). MIL-HDBK-1823 and associated mh1823 POD software gives most common methods of POD analysis. In this paper, POD analysis is applied to an NDE method, such as eddy current testing, where calibration is used. NDE calibration standards have known size artificial flaws such as electro-discharge machined (EDM) notches and flat bottom hole (FBH) reflectors which are used to set instrument sensitivity for detection of real flaws. Real flaws such as cracks and crack-like flaws are desired to be detected using these NDE methods. A reliably detectable crack size is required for safe life analysis of fracture critical parts. Therefore, it is important to correlate signal responses from real flaws with signal responses form artificial flaws used in calibration process to determine reliably detectable flaw size.
Document ID
20170001660
Document Type
Presentation
Authors
Koshti, Ajay M.
(NASA Johnson Space Center Houston, TX, United States)
Date Acquired
February 17, 2017
Publication Date
March 25, 2017
Subject Category
Structural Mechanics
Report/Patent Number
JSC-CN-38673
Meeting Information
SPIE Smart Structures NDE(Portland, OR)
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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