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Monitoring process variability and root cause analysis in paper box production

Mohd Salleh, Rohayu and Ng, Jin Chuan and Saharan, Sabariah (2018) Monitoring process variability and root cause analysis in paper box production. International Journal of Engineering & Technology, 7 (4.30). pp. 492-497. ISSN 2227524X


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In this paper, monitoring procedure for process variability in multivariate setting based on individual observations which is a combina-tion of (i) Hotelling’s T2 control chart in detecting out of control signal and (ii) implementation of Mason, Young and Tracy (MYT) de-composition and structure analysis technique for root cause analysis is introduced. The advantages of this procedure will be shown by using the case of a paper box production process in one of the Malaysian manufacturing companies. The successful application of this multivariate approach could act as a stimulant for most industries to imitate in process monitoring. Moreover, the computation efficiency in root cause analysis enables quality’s multiple characteristics to be monitored simultaneously. Based on the findings, the core issue that needs to be a matter of concern by the management team is the closure tap of the box. This process variation should be solved immedi-ately to avoid the products’ quality from further deteriorating.

Item Type: Article
Uncontrolled Keywords: Hotelling’s T2; multivariate statistical process control; MYT decomposition
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Applied Science and Technology > Department of Mathematics and Statistic
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 31 Oct 2019 02:37
Last Modified: 31 Oct 2019 02:37
URI: http://eprints.uthm.edu.my/id/eprint/11800
Statistic Details: View Download Statistic

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