Description Of Spc ( Statistical Process Control )
Md. Sourove Akther Momin1*, Mr.Md. Golam Kader2 and Md. Mahbubur Rahaman3
Department of Mechanical Engineering, Khulna University of Engineering
Technology, Khulna 9203, Bangladesh
Corresponding author: Md. Sourove Akther Momin (
[email protected])
Abstract: SPC (statistical process control) is an important tool to solve the
manufacturing problem and the most modernized effective scheme to obtain process
durability and fostering the process pertinence decreasing the variability. In
manufacturing system, products do not run up against the proper province of quality
permanently with the customer desire. This impermanency appears due to various
productions of variations like machines, operators, materials, etc. The main purpose
of control chart is to monitor the changes, and subsequently governing the scheme.
The study deals with controlling and upliftment of the quality of pipe through
checking and observing the pipe s height, diameter and weight from pipe industry.
From the investigation, X bar chart, S and R control chart are developed for the
variables. Furthermore, EWMA (exponentially weighted moving average) is used to
focus for identifying the small process shifts All of the investigation represent, the
process is in control or not. For the process out of control status, the assignable
causes behind it be marked out and foreclosed by taking proper steps.
Keywords: SPC, control chart, EWMA, quality.
Nomenclature Average of the sample element
XSample element