Open Access
Table 3
Uncertainty budget by GUM.
| Code u i | Sources of uncertainty Components | Law | Standard uncertainty u i (Half extended) | Sensitivity coefficient
Si =
|
Uncertainty (Si*ui) | Contribution (sensitivity indices) Si en (%) | |||
|---|---|---|---|---|---|---|---|---|---|
| u − B (E) | u F | Force sensor (in N) | Peson :u ET (Calibration) | Normal | 1 | / | / | / | |
| Peson :u Der (Drift) | Normal | 1 | / | / | |||||
| Peson :u Res (Resolution) | Uniform | 2.88675135 | / | / | |||||
| Peson :u s (Sensitivity) | Arc-sine | 0 | / | / | |||||
| u F | Normal | 1.914854216 | 2.924528302 | 5.600045347 | 0.03 | ||||
| u z | Displacement sensor LVDT: deformation (in μm) | LVDT :u ET (Calibration) | Normal | 0.00890956 | / | / | |||
| LVDT :u Der (Drift) | Normal | 8.9096E-06 | / | / | |||||
| LVDT :u Res (Resolution) | Uniform | 4.0825E-05 | / | / | |||||
| LVDT :u s (Sensitivity) | Arc-sine | 0 | / | / | |||||
| uz | Normal | 0.00840008 | 1674.292453 | 14.064191 | 2.150 | ||||
| u h | Thickness of the test specimen (in mm) | Caliper:u ET (Calibration) | Normal | 0.001266144 | / | / | |||
| Caliper:u Der (Drift) | Normal | 0.001266144 | / | / | |||||
| Caliper:u Res (Resolution) | Uniform | 0.002106028 | / | / | |||||
| Caliper:u s (Sensitivity) | Arc-sine | 0.000163379 | / | / | |||||
| u h | Normal | 0.180165144 | 0.126361695 | 0.022765973 | 0.00254 | ||||
| u k | Load area factor | u k | Normal | 0.01 | / | 0.00333 | 0.00231 | ||
| u − A (E) | Repeatability | t-distribution | 296.507257 | 1 | 296.507257 | 45.23 | |||
The standard complex uncertainty of the Modulus of rigidity (in MPa)
u
(
E
)=
|
296.8934421 | ||||||||
| T standard complex uncertainty of the adjusted Modulus of rigidity (in MPa) u ( E ′) | 294.2984946 | ||||||||
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