Using the Control Chart Approach to Evaluate Hardness Tester Performance

Autor:	GF Vander Voort
Rok vydání:	2016
Předmět:	Engineering Engineering drawing Mechanics of Materials business.industry Metals and Alloys Control chart Condensed Matter Physics business Electronic Optical and Magnetic Materials
Zdroj:	Practical Metallography. 53:760-769
ISSN:	2195-8599 0032-678X
DOI:	10.3139/147.110435
Popis:	The control chart data analysis approach is an ideal method to evaluate the quality of test data using a specific tester, such as a microindentation hardness tester, over a period of usage time. The method described in ASTM E2554 was used for this work. This analysis is done by plotting a Mean s and a standard deviation control chart of the weekly/periodic verification data obtained with certified hardness test blocks at a specific test force and a specific hardness level. The method is illustrated using a Knoop hardness test block certified at a test force of 500 gf and with a long diagonal length of 116.18 μm (527.1 HK). From this data, one can easily calculate the uncertainty of the measurements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::01a7aec5126534fce9f6859a42ee5aa8 https://doi.org/10.3139/147.110435 Zobrazit plný text záznamu