Open AccessUncertainty of measurement -Important parameter for product conformity assessment
Author(s) -
Gina Mihaela SICOE
Publication year - 2020
Publication title -
buletin ştiinţific - universitatea din piteşti. seria autovehicule rutiere
Language(s) - English
Resource type - Journals
eISSN - 2601-0380
pISSN - 1453-1100
DOI - 10.26825/bup.ar.2020.008
Subject(s) - measurement uncertainty , conformity assessment , uncertainty analysis , sensitivity analysis , conformity , propagation of uncertainty , observational error , econometrics , quality (philosophy) , process (computing) , confidence interval , computer science , statistics , reliability engineering , risk analysis (engineering) , mathematics , engineering , business , psychology , physics , social psychology , quantum mechanics , operating system
The measurements are widely used to ensure the quality of products. It is known that the measurement process is influenced by many factors which lead to measurement errors. The uncertainty of measurement is an essential parameter because the expression of the results accompanied by uncertainty offers more confidence in the results. The research presented in this article focuses on methods forcalculating uncertainty and explaining the rules for making decisions when we use uncertainty. Two case studies are presented, one for dimensional measurements and the other for the estimation of the uncertainty of Vickers hardness measurement for one material, steel OLC15, in order to establish the relevance of the results and quality assessment. The results obtained on several measurements and the uncertainties of measurement associated are presented in the article and a discussion of the results is undertaken.