A Mathematical Model For Assembly Line Balancing Problem Type 2 Under Ergonomic Workload Constraint

Polat, Olcay; Özcan, Mutlu; Özgörmüş, Elif

doi:10.2174/1875934301811010001

Cited by 20 publications

(9 citation statements)

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“…In order to keep the hypothesis reasonable and scientific, the mathematical models in this study are supported by literature references [33][34][35]. The assumptions for the establishment of the assembly line balance model are listed as follows:…”

Section: Assumptionsmentioning

confidence: 99%

Carbon Emission Evaluation Based on Multi-Objective Balance of Sewing Assembly Line in Apparel Industry

Zhang

Chen

2019

Energies

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Apparel manufacturing is an industry with high energy consumption and carbon emissions. With the development of the low-carbon economy, low-carbon production in the apparel manufacturing industry become more and more imperative. The apparel industry is encountering great challenges in reducing carbon emissions. Garment sewing comprises a large number of processes, machines and operators. However, the existing studies lack quantitative analysis of carbon sources in the sewing process. This study analyzed the carbon emission characteristics in garment sewing production. Evaluation models of carbon emission were established for the sewing process in this research and the factors of fabrics, accessories, sewing machines and operators were included in the models. The results showed that fabrics and accessories were the main sources of carbon emissions in garment sewing production. The second largest carbon emission source was sewing machines, followed by operators. According to the evaluation models, the number of machines, operators and the utilization rate of the machines were related to the balance of the assembly line. A multi-objective optimization model aimed at minimizing the time loss rate and smoothness index of the assembly line was established, and a fast and elitist multi-objective genetic algorithm was used to obtain the solution for carbon emission reduction. The men’s shirt assembly lines, based on three types of workstation layouts (the order of processes, the type of machines and the components of the garment), were applied to verify the effectiveness of the model and algorithm. The results indicated that the total carbon emissions of the three assembly lines based on balance optimization were less than that of the normal assembly line. The assembly line of the workstations arranged in the order of processes was the best assembly line since it had the highest efficiency and the lowest carbon emissions.

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Section: Assumptionsmentioning

confidence: 99%

Carbon Emission Evaluation Based on Multi-Objective Balance of Sewing Assembly Line in Apparel Industry

Zhang

Chen

2019

Energies

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“…Teniendo en cuenta los avances en anteriores publicaciones en [26] se aborda el problema de balance de línea de ensamblaje tipo 2, donde se conoce el número de líneas de estación de trabajo. El objetivo principal no solo es equilibrar el tiempo del ciclo sino también equilibrar la carga de trabajo física de las estaciones simultáneamente.…”

Section: Referentes Teóricos Y Empíricosunclassified

Balanceo de líneas de producción en la industria farmacéutica mediante Programación por metas

Cabrera

González

2019

INGE CUC

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Introducción: En una línea de fabricación es muy importante que los tiempos de ciclo de las diferentes estaciones estén balanceados y que sean bajos, ya que esto permite disminuir los inventarios de producto en proceso, sin embargo, hacer esto conlleva a aumentar el número de estaciones, lo que no es favorable ya que eleva los costos fijos asociados a las estaciones, en tal sentido es necesario definir estrategias que permitan lograr un equilibrio entre estos requerimientos. Objetivo: En este artículo se propone la formulación de un modelo para el balanceo de línea, utilizando la técnica de programación multiobjetivo por metas, aplicada a la industria farmacéutica con el fin de minimizar el número de estaciones, minimizar el tiempo de ciclo y el inventario en proceso. Metodología: Se emplea la programación por metas para abordar un modelo de balance de línea, que considera al mismo tiempo la asignación de múltiples estaciones una operación y la asignación de múltiples operaciones a una estación. Resultados: Se logra una reducción significativa del tiempo ciclo y del tiempo ocioso a costos mínimos, además se presenta una comparación entre el modelo determinístico y estocástico. Conclusiones: A través de esta implementación del modelo en LINGO, se validó el cumplimiento de las restricciones planteadas, la precedencia de las operaciones y el buen funcionamiento del modelo mediante las soluciones óptimas obtenidas. La simulación, es una herramienta que permite ilustrar la complejidad de las operaciones del sistema de producción, las cuales requieren como en nuestro caso de una modelación más ajustada a la realidad para comprender el comportamiento del proceso y evaluar diferentes estrategias

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“…Looking at the outcome of this presented approach, the expenses that are obligated by the ergonomic legislation can be minimized. Polat et al (2018) referred to Assembly Line Balancing Problem (ALBP) Type 2. Balancing the cycle time and physical workload of the stations concurrently was the main purpose.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Because a few factors about the measurement job are present, like (1) demands of job activities (2) the state of the workplace, and (3) environmental conditions (4) factors of human psychology such as stress, the physical work load concept has various aspects. (Fallentin et al, 2001;Mutlu and Özgörmüş, 2012;Polat et al, 2018). The phsyical workload is considered by certain studies as an additional restraint for the pursuit of assembly lines that are well-designed.…”

Section: Literature Reviewmentioning

confidence: 99%

Ergonomi̇k Montaj Hatti Dengeleme İçi̇n Yeni̇ Bi̇r Model Öneri̇si̇

Kahya¹,

Şahin²

2019

Mühendislik Bilimleri Ve Tasarım Dergisi

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Assembly line balancing is a problem where tasks assign to stations in compliance with precedence constraints and as far as possible to balance delays. Assembly lines which is not designed properly in an ergonomic way cause not only productivity loss but also work-related muscoloskeletal disorders on workers. To prevent such problems, it should be aimed to catch acceptable level for each workstation's risk score and assign ergonomic risks equivalently among workers. In this study, for assembly line balancing problem, a new model approach is tackled, which constitute stations by consider ergonomic risk scores in addition to cycle time and precedence constraints. In order to compare proposed model with a classical assembly line balancing technique, a performance criterion which is combination of cycle time and ergonomic risk score were defined. The developed model was applied in a factory's oven assembly line. In the assembly line, task times were measured, precedence diagram was constructed and ergonomic risk levels were evaulated by using REBA method. When balancing lines with using Longest Operation Times technique, performance score was %25.61 but when it comes to balance with developed model performance score was obtained %18.25. It has been detected that developed model provides 7.41% improvement in line's total performance.

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A Mathematical Model For Assembly Line Balancing Problem Type 2 Under Ergonomic Workload Constraint

Cited by 20 publications

References 0 publications

Carbon Emission Evaluation Based on Multi-Objective Balance of Sewing Assembly Line in Apparel Industry

Carbon Emission Evaluation Based on Multi-Objective Balance of Sewing Assembly Line in Apparel Industry

Balanceo de líneas de producción en la industria farmacéutica mediante Programación por metas

Ergonomi̇k Montaj Hatti Dengeleme İçi̇n Yeni̇ Bi̇r Model Öneri̇si̇

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