ASTM Nondestructive Testing Committee Approves New Standard on Detection Analysis for Hit/Miss Data

A new ASTM International standard provides the necessary background and
describes the step-by-step process for analyzing nondestructive testing
hit/miss data resulting from a probability of detection (POD) examination,
including minimum requirements for validating the resulting POD curve.

The new standard, ASTM E2862, Practice for Probability of Detection Analysis
for Hit/Miss Data, has been developed by Subcommittee E07.10 on Specialized
NDT Methods, part of ASTM International Committee E07 on Nondestructive
Testing.

"A probability of detection demonstration test and analysis is the best available
method for quantifying the detection capability of a nondestructive testing
system," says Jennifer R. Brown, senior statistician, Pratt & Whitney Rocketdyne,
and a member of E07.10. "However, a POD demonstration test and analysis can
be a pointless exercise without a basic understanding of the NDT system, as
well as a general understanding of the underlying statistical method on which
the POD analysis is based."

Brown notes that ASTM E2862 will provide this understanding and will be useful
to anyone who is responsible for performing a probability of detection analysis
on hit/miss data resulting from a POD examination, as well as those who are
recipients of, and base decisions on, the results of such an analysis. The
National Aeronautics and Space Administration requires probability of detection
demonstration tests on nondestructive testing systems that are used evaluate
fracture critical hardware.

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