New approach to uncertainty evaluation in the calibration of gauge block comparators

Andrej Godina (Avtor), Bojan Ačko (Avtor), Marjan Družovec (Avtor)

Povzetek

Gauge blocks (GBs) are being calibrated by two methods: interferometric calibration and calibration by mechanical comparison to reference GB. While interferometric method represents primary level, comparison is more suitable for calibrating industrial GBs because of lower costs and shorter calibration time. Although no significant changes in equipment happened in last decade, improvements in mechanical comparison are on-going. In addition to the uncertainty of the reference GB calibration, uncertainty of the GB comparator is the most important contribution to total uncertainty of the mechanical calibration. The article introduces a new approach for evaluating the uncertainty of GB comparator calibration. The uncertainty budget and results of analytical and experimental evaluation of all contributions are presented. This approach results in lower end-effect uncertainty and a slightly higher length dependent uncertainty, in comparison with the uncertainty evaluation procedure as described in EA document EA-10/02.

Ključne besede

tehnološke meritve;kalibriranje;merilna negotovost;etaloni;mehanska primerjava;measurements;calibration;measuring uncertainty;gauge block;comparator;CMC;mechanical comparison;

Podatki

Jezik:	Angleški jezik
Leto izida:	2007
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UM FERI - Fakulteta za elektrotehniko, računalništvo in informatiko
UDK:	53.089
COBISS:	11393558
ISSN:	0263-2241
Št. ogledov:	1902
Št. prenosov:	102
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarne ključne besede:	tehnološke meritve;kalibriranje;merilna negotovost;etaloni;mehanska primerjava;
URN:	URN:SI:UM:
Strani:	str. 607-614
Letnik:	ǂVol. ǂ40
Zvezek:	ǂiss. ǂ6
Čas izdaje:	Jul. 2007
ID:	8717360