APLIKASI METODE SIMULATED ANNEALING PADA PERBAIKAN TATA LETAK BERDASARKAN KONSEP GROUP TECHNOLOGY: STUDI KASUS PADA PERUSAHAAN SEPEDA

Abstract

This research proposes a facility layout improvement in Material Division in a bicycle company. This is due to the inefficient placement of new machines and thus, can affect efficiency in material handling. Layout improvement is being held with Systematic Layout Procedure (SLP) as the framework, based on group technology concept to improve efficiency in production system with high level of product variation. There are several stages conducted in this research. In cycle time research, a comprehensive time study is being held. In machine grouping, similarity coefficient method is conducted, in which the writer uses three different coefficients: Jaccard, Ochiai, and Kulczynski. To predict the area of cells, linear regression method is used. In the macro development stage, a regular Simulated Annealing (SA) and Multi Objective Simulated Annealing (MOSA) are implemented. In the end, there are five proposed layouts with a better score for machine grouping criteria compared to the original layout (grouping efficiency = 0.66; grouping efficacy = 0.24). Proposed layout 1, 2, and 3 are the best layout for machine grouping criteria (grouping efficiency = 0.80; grouping efficacy = 0.51). Proposed layout 1 is the best layout for material flow criteria (material flow/week = 45,713.28 times.cm). Proposed layout from the supervisor is the best layout for movement criteria (movement = 558.12 cm). Proposed layout 2 is the best layout for unity criteria (unity = 152.29 cm). However, if performance of each proposed layout is ranked and scored, proposed layout 2 and 4 are the two layouts with the highest mean of rank weight (rank weight for proposed layout 2 = 0.78; rank weight for proposed layout 4 = 0.67).