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Asghar Seif

Academic rank: Associate Professor
ORCID:
Education: PhD.
ScopusId: 53164719100
HIndex:
Faculty: Faculty of Science
Address:
Phone:

Research

Title
Double-objective economic statistical design of (X ) control chart using Linex loss function
Type
JournalPaper
Keywords
X Control chart, Economic-statistical design, Double-objective design, Linex loss function, Genetic algorithm
Year
2023
Journal International Journal of Quality & Reliability Management
DOI
Researchers Salime Sadat Aghili ، Mohsen Torabian ، Mohammad Hassan Behzadi ، Asghar Seif

Abstract

Purpose – The purpose of this paper is to develop a double-objective economic statistical design (ESD) of (X ) control chart under Weibull failure properties with the Linex asymmetric loss function. The authors have expressed the probability of type II error (β) as the statistical objective and the expected cost as the economic objective. Design/methodology/approach – The design used in this study is based on a double-objective economic statistical design of (X ) control chart with Weibull shock model via applying Banerjee and Rahim’s model for non-uniform and uniform schemes with Linex asymmetric loss function. The results in the least average cost and β in uniform and non-uniform schemes by Linex loss function, compared with the same schemes without loss function. Findings – Numerical results indicate that it is not possible to reduce the second type of error and costs at the same time, which means that by reducing the second type of error, the cost increases, and by reducing the cost, the second type of error increases, both of which are very important. Obtained based on the needs of the industry and which one has more priority has the right to choose. These designs define a Pareto optimal front of solutions that increase the flexibility and adaptability of the X control chart in practice. When the authors use non-uniform schemes instead of uniform schemes, the average cost per unit time decreases by an average and when the authors apply loss function, the average cost per unit time increases by an average. Also, this quantity for double-objective schemes with loss function compared to without loss function schemes in cases uniform and non-uniform increases. The reason for this result is that the model underestimated the costs before using the loss function. Practical implications – This research adds to the body of knowledge related to flexibility in process quality control. This article may be of interest to quality systems experts in factories where the choice