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Quality Control Analysis of Porcelain Products Using Overall Equipment Effectiveness and Statistical Quality Control Methods

Nurprihatin Filscha, Rembulan Glisina Dwinoor, Andry Johanes Fernandes, Immanuella Sarah, Widiwati Ivana Tita Bella

Management and Production Engineering Review

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2023

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Vol. 14, No. 3

134--147

EN

This study uses statistical quality control (SQC) and overall equipment effectiveness (OEE) to examine quality at a porcelain production firm. The study is motivated by the most frequently broken machines in 2019, is the Jigger 01 machine. This paper aims to evaluate the machine’s effectiveness using the OEE method. The OEE determines the scope of the problem to be solved using the SQC method. The average OEE value in 2019 was 70%. Based on the SQC method, the product defect produced is still under control. However, the average defect is still above the company’s tolerance limit of 10%. Consequently, this study offers enhancements utilizing the Failure Mode Effect Analysis (FMEA) technique. The results indicate that human resources and machines caused defective products. This paper contributes to providing several improvements that the company can apply to maximize its quality control analysis. After implementing the improvement, the OEE value increases to 74%.

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Fuzzy programming for multi-choice bilevel transportation problem

Arora Ritu, Gupta Kavita

Operations Research and Decisions

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2021

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Vol. 31, No. 3

5--21

EN

Multi-choice programming problems arise due to the diverse needs of people. In this paper, multichoice optimization has been applied to the bilevel transportation problem. This problem deals with transportation at both the levels, upper as well as lower. There are multiple choices for demand and supply parameters. The multi-choice parameters at the respective levels are converted into polynomials which transmute the defined problem into a mixed integer programming problem. The objective of the paper is to determine a solution methodology for the transformed problem. The significance of the formulated model is exhibited through an example by applying it to the hotel industry. The fuzzy programming approach is employed to obtain a satisfactory solution for the decision-makers at the two levels. A comparative analysis is presented in the paper by solving the bilevel multi-choice transportation problem with goal programming mode as well as by the linear transformation technique. The example is solved using computing software.

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Arkusz kalkulacyjny Excel w nauczaniu statystycznej kontroli jakości procesu produkcji

Kuna-Broniowska I.

Inżynieria Rolnicza

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2005

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R. 9, nr 8

203--210

PL

Rozważano możliwość wykorzystania narzędzi programu Excel w statystycznej kontroli jakości procesu produkcji oraz w nauczaniu tej metody kontroli jakości. Analizę możliwości programu przeprowadzono zarówno pod kątem wykorzystania jego standardowych funkcji, jak też opracowania makr, szablonów arkuszy dla danych pomiarowych oraz instrukcji.

EN

Paper considered the possibilities of applying the Excel programme to statistical control of production process quality as well as in teaching of this quality control method. The programme was analyzed in respect of its standard functions as well as of the macros’ elaboration, data collection sheet patterns and instructions.