Open AccessUsing decision rule in calibration of long gauge block on the conformity assessment scheme
Author(s) -
Muhammad Haekal Habibie,
Ocka Hedrony
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/673/1/012110
Subject(s) - conformity , conformity assessment , calibration , gauge (firearms) , acceptance testing , guard (computer science) , standard uncertainty , mathematics , standard deviation , statistics , measurement uncertainty , computer science , psychology , social psychology , geography , software engineering , archaeology , programming language , operating system
Conformity assessment is a process commonly used in calibration activities to ensure the validity of the results of measurements or calibrations which is compared with specific requirements or standards. In this research the use of conformity assessment was carried out on long gauge block calibration activities in National Metrology Institute of Indonesia by determining objective criterion called decision rule. Decision rules are made by referred to JCGM 106:2012 standard that using two-sided acceptance method. In the two-sided acceptance method is used the acceptance/rejection limits such as: tolerance interval, acceptance interval and guard band. Conformity assessment result is stated as “accepted” if the calibration results are within the criteria of the decision rule, and vice versa. From this research, it was found that in the calibration process of long gauge block, the guard band value is obtained from the expanded uncertainty ( U ) value of the long gauge block (UUT). The conformity assessment results will be “accepted” if the reduced tolerance value ( t e reduced ) is greater than the measured deviation value ( lx ).