Uncertainty estimation: a simplified method for small and medium industrial enterprises (SMES) / Estimativa da incerteza: um método simplificado para pequenas e médias empresas industriais (PME)

Pedro Hilário Luzolo

Abstract


The implementation of the requirements of ISOGUM, are difficult to reach in practice, so we choose to propose an alternative method to estimate uncertainty in measurement.  Two methods were proposed to calculate the uncertainty of geometric quantities. We measured in eleven patterns of different lengths, with the obtained, The ANOVA test was performed, where it sample was proven that the sample is normally distributed.  Eleven uncertainties were calculated in each proposed method and with the standard method and the following tests were performed:

Correlation Test – To verify the coexistence between each proposed method with ISOGUM, the existence of a correlation between the ISOGUM methods and each proposed method was proven;

Student's t Test of the Pearson Coefficient – it was found that the 1st proposed method coexists with the ISOGUM method up to a  significance of 5% and the 2nd method proposed up to a significance of 40%;

Linear Regression – The ISOGUM method equation was determined in function of the first method proposed by ISOGUM;

Results - Statistically, the results obtained do not have a significant difference with the results obtained in the ISOGUM method.


Keywords


Metrology, Measurement, Uncertainty, Test, Coexistence.

References


BBUREAU INTERNACIOAL DES POIDS ET MESURES (BIPM), I. E. (2008). Guide to Expression of Uncertainty in measurement.

Brown, R. J. (2020). Measuring measurement - What is metrology and why does it matter? ELSEVIER, 1-3.

CARPINETTI, L. C. (2017). GESTÃO DA QUALIDADE. BRASIL.

CASTANHEIRA, N. (2018). MÉTODOS QUANTITATIVOS. BRAZIL: ISPEX.

VIM. (2012). Vocabulário Internacional da Metrologia. Brazil.




DOI: https://doi.org/10.34117/bjdv7n7-381

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