Quality Control
1. Revisiting the One-Sided EWMA Control Chart

Duy Duong-Tran; Romina Dastoorian; Lee Wells

Articles in Press, Accepted Manuscript, Available Online from 04 December 2021


  Exponential Weighted Moving Average (EWMA) control charts have been widely used in Statistical Process Control to detect small and persistent process shifts. In theory, EWMA control limits monotonically increase over time to account for the continual growth of the EWMA statistic’s variance. However, ...  Read More

Statistical Process
2. Quality improvement of molding machine through statistical process control in plastic industry

Teuku Mirwan Saputra; Hernadewita Hernadewita; Akmal Yudha Prawira Saputra; Lien Herliani Kusumah; Hermiyetti ST

Volume 6, Issue 2 , June 2019, , Pages 87-96


  Enhancing the process capability is a must in quality improvement of process manufacturing in the industry. Usually, Statistical Process Control (SPC) is applied in measure the activity of quality improvement. In this case, the statistical process control used to measure the process capability of molding ...  Read More