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 for<br />
50 HRBW<br />
No Quantity<br />
Estimated<br />
valus<br />
Unit<br />
Stadard<br />
uncertatinty<br />
Sensitivity<br />
coefficient<br />
Uncertainty<br />
c<strong>on</strong>tributi<strong>on</strong><br />
X i x i<br />
xi<br />
ux<br />
<br />
C i u i (H )<br />
1 Preliminary test force 0.10 N 0.06 0.123 0.0071<br />
2 Total test force 0.26 N 0.15 -0.093 -0.0140<br />
3 Permanent depth of indentati<strong>on</strong> 0.2 ㎛ 0.12 -0.5 -0.0577<br />
4 Preliminary test force dwell time 0.5 s 0.29 0.0896 0.0259<br />
5 Indentati<strong>on</strong> velocity 6 ㎛/s 3.46 0.0032 0.0111<br />
6 Total test force dwell time 0.5 s 0.29 -0.017 -0.0049<br />
7 indenter ball diameter 2.0 ㎛ 1.15 -0.0025 -0.0029<br />
8 Deformati<strong>on</strong> of frame 0.2 ㎛ 0.12 0.5 0.0577<br />
9<br />
L<strong>on</strong>g-term stability of primary<br />
hardness testing machine<br />
0.43 HRBW 0.25 1<br />
0.2483<br />
10 Comdined uncertainty(HRBW) 0.263<br />
11 Expanded uncertainty(HRBW), k=2 0.53<br />
Uncertainty budget for<br />
60 HRBW<br />
No Quantity<br />
Estimated<br />
valus<br />
Unit<br />
Stadard<br />
uncertatinty<br />
Sensitivity<br />
coefficient<br />
Uncertainty<br />
c<strong>on</strong>tributi<strong>on</strong><br />
X i x i<br />
xi<br />
ux<br />
<br />
C i u i (H )<br />
1 Preliminary test force 0.10 N 0.06 0.101 0.0058<br />
2 Total test force 0.26 N 0.15 -0.0838 -0.0126<br />
3 Permanent depth of indentati<strong>on</strong> 0.2 ㎛ 0.12 -0.5 -0.0577<br />
4 Preliminary test force dwell time 0.5 s 0.29 0.1186 0.0342<br />
5 Indentati<strong>on</strong> velocity 6 ㎛/s 3.46 0.0018 0.0062<br />
6 Total test force dwell time 0.5 s 0.29 -0.017 -0.0049<br />
7 indenter ball diameter 2.0 ㎛ 1.15 -0.0074 -0.0085<br />
8 Deformati<strong>on</strong> of frame 0.2 ㎛ 0.12 0.5 0.0577<br />
9<br />
L<strong>on</strong>g-term stability of primary<br />
hardness testing machine<br />
0.35 HRBW 0.20 1<br />
0.2021<br />
10 Comdined uncertainty(HRBW) 0.221<br />
11 Expanded uncertainty(HRBW), k=2 0.44<br />
Uncertainty budget for<br />
70 HRBW<br />
No Quantity<br />
Estimated<br />
valus<br />
Unit<br />
Stadard<br />
uncertatinty<br />
Sensitivity<br />
coefficient<br />
Uncertainty<br />
c<strong>on</strong>tributi<strong>on</strong><br />
X i x i<br />
xi<br />
ux<br />
<br />
C i u i (H )<br />
1 Preliminary test force 0.10 N 0.06 0.079 0.0046<br />
2 Total test force 0.26 N 0.15 -0.0746 -0.0112<br />
3 Permanent depth of indentati<strong>on</strong> 0.2 ㎛ 0.12 -0.5 -0.0577<br />
4 Preliminary test force dwell time 0.5 s 0.29 0.1296 0.0374<br />
5 Indentati<strong>on</strong> velocity 6 ㎛/s 3.46 0.0004 0.0014<br />
6 Total test force dwell time 0.5 s 0.29 -0.017 -0.0049<br />
7 indenter ball diameter 2.0 ㎛ 1.15 -0.0123 -0.0142<br />
8 Deformati<strong>on</strong> of frame 0.2 ㎛ 0.12 0.5 0.0577<br />
9<br />
L<strong>on</strong>g-term stability of primary<br />
hardness testing machine<br />
0.35 HRBW 0.20 1<br />
0.2021<br />
10 Comdined uncertainty(HRBW) 0.222<br />
11 Expanded uncertainty(HRBW), k=2 0.44<br />
i<br />
i<br />
i<br />
3<br />
3<br />
3<br />
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