Integrated optimisation of the unequal-area facility layout and the flowshop group scheduling problems for a case of the garment industry

Sebastian Cáceres-Gelvez, Martín Darío Arango-Serna and Julián Andrés Zapata-Cortés

International Journal of Industrial and Systems Engineering, 2023, vol. 45, issue 2, 148-172

Abstract: The unequal-area facility layout (UAFLP) and the flowshop group scheduling (FSGSP) problems are two important problems in both research literature and industrial applications. The former considers the location of departments with different area requirements within a floor plan. The latter seeks for a sequence of product families and jobs to be processed on groups of machines, called manufacturing cells. In this paper, an integrated approach for optimising both the UAFLP and the FSGSP is presented in the case of a sportswear manufacturing company. A genetic algorithm (GA) is proposed for minimising the sum of the total material handling and the tardiness costs. The results showed that the optimisation process obtained a reduction of 6.69% of the total costs for the proposed alternative, in comparison with the current situation of the case study.

Keywords: unequal-area facility layout; flowshop group scheduling; genetic algorithm; garment industry; integrated optimisation; case study. (search for similar items in EconPapers)
Date: 2023
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