Actions for INSPECTION SHOP [electronic resource] : PLAN TO PROVIDE UNCERTAINTY ANALYSIS WITH MEASUREMENTS

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INSPECTION SHOP [electronic resource] : PLAN TO PROVIDE UNCERTAINTY ANALYSIS WITH MEASUREMENTS

Published
Washington, D.C. : United States. Dept. of Energy, 2006.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
PDF-file: 14 pages; size: 0.7 Mbytes
Additional Creators
Lawrence Berkeley National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The LLNL inspection shop is chartered to make dimensional measurements of components for critical programmatic experiments. These measurements ensure that components are within tolerance and provide geometric details that can be used to further refine simulations. For these measurements to be useful, they must be significantly more accurate than the tolerances that are being checked. For example, if a part has a specified dimension of 100 millimeters and a tolerance of 1 millimeter, then the precision and/or accuracy of the measurement should be less than 1 millimeter. Using the ''10-to-1 gaugemaker's rule of thumb'', the desired precision of the measurement should be less than 100 micrometers. Currently, the process for associating measurement uncertainty with data is not standardized, nor is the uncertainty based on a thorough uncertainty analysis. The goal of this project is to begin providing measurement uncertainty statements with critical measurements performed in the inspection shop. To accomplish this task, comprehensive knowledge about the underlying sources of uncertainty for measurement instruments need to be understood and quantified. Moreover, measurements of elemental uncertainties for each physical source need to be combined in a meaningful way to obtain an overall measurement uncertainty.
Report Numbers
E 1.99:ucrl-tr-226946
ucrl-tr-226946
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
12/20/2006.
"ucrl-tr-226946"
Nederbragt, W W.
Funding Information
W-7405-ENG-48
View MARC record | catkey: 14103986