APMP.M.H-S3 Final Report Comparison on Hardness ... - BIPM
APMP.M.H-S3 Final Report Comparison on Hardness ... - BIPM
APMP.M.H-S3 Final Report Comparison on Hardness ... - BIPM
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Revisi<strong>on</strong>: <str<strong>on</strong>g>Final</str<strong>on</strong>g> <str<strong>on</strong>g>Report</str<strong>on</strong>g><br />
Date: May 25, 2012<br />
Uncertainty budget of <strong>Hardness</strong> machine at 35 HRA A32517<br />
<strong>Hardness</strong> value, HRA 35.3 1242.9 35.3 1<br />
Quantity Unit Estimated Standard Sensitivity Uncertainty<br />
error value uncertainty coefficient c<strong>on</strong>tributi<strong>on</strong><br />
Xi xi u(xi) ci ui(H) Preliminary test force,F o N 0.020 0.011 0.226 0.003<br />
Total test force, F N 0.588 0.340 -0.091 -0.031<br />
Permanent depth of indentati<strong>on</strong>, h m 0.2 0.115 -0.500 -0.058<br />
Preliminary test force dwell time,to s 0.5 0.289 0.049 0.014<br />
Indentati<strong>on</strong> velocity, v mm/s -1<br />
0.3 0.173 -0.010 -0.002<br />
Total test force dwell time, t s 1 0.289 -0.106 -0.030<br />
Indenter angle, ° 0.1 0.058 0.180 0.010<br />
Indenter radius, r m 5 2.887 0.058 0.167<br />
Deformati<strong>on</strong> of frame,DF m 0.25 0.144 0.500 0.072<br />
Combined uncertainty, u c HRA Combined uncertainty, uc 0.197<br />
Expanded uncertainty, U e HRA Expanded uncertainty, Ue 0.394<br />
Uncertainty budget of hardness measurement at 35 HRA A32517<br />
Quantity Unit Estimated Standard Sensitivity Uncertainty<br />
value uncertainty coefficient c<strong>on</strong>tributi<strong>on</strong><br />
X i x i u(x i) c i u i(H)<br />
<strong>Hardness</strong> machine, H phm HRA 35.3 0.197 1 0.197<br />
Readability,H res HRA 0 0.003 1 0.003<br />
Repeatability of measurement, H rep HRA 0 0.041 1 0.041<br />
Combined uncertainty, uc 0.201<br />
Measured hardness,H mh HRA 35.3 Expanded uncertainty, Ue 0.403<br />
Uncertainty budget of <strong>Hardness</strong> machine at 40 HRA A33781<br />
<strong>Hardness</strong> value, HRA 39.1 1528.9 39.1 1<br />
Quantity Unit Estimated Standard Sensitivity Uncertainty<br />
error value uncertainty coefficient c<strong>on</strong>tributi<strong>on</strong><br />
Xi xi u(xi) ci ui(H) Preliminary test force,F o N 0.020 0.011 0.212 0.002<br />
Total test force, F N 0.588 0.340 -0.086 -0.029<br />
Permanent depth of indentati<strong>on</strong>, h m 0.2 0.115 -0.500 -0.058<br />
Preliminary test force dwell time,to s 0.5 0.289 0.044 0.013<br />
Indentati<strong>on</strong> velocity, v mm/s -1<br />
0.3 0.173 -0.009 -0.002<br />
Total test force dwell time, t s 1 0.289 -0.099 -0.029<br />
Indenter angle, ° 0.1 0.058 0.180 0.010<br />
Indenter radius, r m 5 2.887 0.058 0.167<br />
Deformati<strong>on</strong> of frame,DF m 0.25 0.144 0.500 0.072<br />
Combined uncertainty, u c HRA Combined uncertainty, uc 0.196<br />
Expanded uncertainty, U e HRA Expanded uncertainty, Ue 0.393<br />
Uncertainty budget of hardness measurement at 40 HRA A33781<br />
Quantity Unit Estimated Standard Sensitivity Uncertainty<br />
value uncertainty coefficient c<strong>on</strong>tributi<strong>on</strong><br />
X i x i u(x i) c i u i(H)<br />
<strong>Hardness</strong> machine, H phm HRA 39.1 0.196 1 0.196<br />
Readability,H res HRA 0 0.003 1 0.003<br />
Repeatability of measurement, H rep HRA 0 0.085 1 0.085<br />
Combined uncertainty, uc 0.214<br />
Measured hardness,H mh HRA 39.1 Expanded uncertainty, Ue 0.428<br />
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