Hypothesis Testing to Confirm the Influence of Technological Parameters on Poor Quality Production

Autor: Lakomá R., Čamek L.
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Archives of Metallurgy and Materials, Vol 59, Iss 3, Pp 1063-1067 (2014)
Druh dokumentu: article
ISSN: 2300-1909
DOI: 10.2478/amm-2014-0181
Popis: This report addresses some chosen statistical methods that could be used to confirm and set up the required functions of technology in foundry companies where parts are cast by the low-wax casting method, whereas these chosen statistical methods are intended to reduce poor quality of produced parts. This research was made on a practical example. Utilization of hypothesis testing methods was examined in order to confirm technological parameters having some influence on the products quality. The data were compared before and after the implementation of changes aimed at reduction of poor quality produced parts in the wax department. The results confirmed that the implemented change had a statistically conclusive influence.
Databáze: Directory of Open Access Journals