Assembly Line Balancing Under Uncertain Task Time And Demand Volatility
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Assembly Line Balancing Under Uncertain Task Time And Demand Volatility
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Author : Yuchen Li
language : en
Publisher: Springer Nature
Release Date : 2022-09-10
Assembly Line Balancing Under Uncertain Task Time And Demand Volatility written by Yuchen Li and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-09-10 with Technology & Engineering categories.
This book introduces several mathematical models in assembly line balancing based on stochastic programming and develops exact and heuristic methods to solve them. An assembly line system is a manufacturing process in which parts are added in sequence from workstation to workstation until the final assembly is produced. In an assembly line balancing problem, tasks belonging to different product models are allocated to workstations according to their processing times and precedence relationships among tasks. It incorporates two features, uncertain task times, and demand volatility, separately and simultaneously, into the conventional assembly line balancing model. A real-life case study related to the mask production during the COVID-19 pandemic is presented to illustrate the application of the proposed framework and methodology. The book is intended for graduate students who are interested in combinatorial optimizations in manufacturing with uncertain input.
Assembly Line Balancing Under Demand Uncertainty
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Author : Celso Gustavo Stall Sikora
language : en
Publisher: Springer Nature
Release Date : 2022-01-11
Assembly Line Balancing Under Demand Uncertainty written by Celso Gustavo Stall Sikora and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-01-11 with Business & Economics categories.
Assembly lines are productive systems, which are very efficient for homogeneous products. In the automotive industry, an assembly line is used in the production of several vehicle variants, including numerous configurations, options, and add-ins. As a result, assembly lines must be at the same time specialized to provide high efficiency, but also flexible to allow the mass customization of the vehicles. In this book, the planning of assembly lines for uncertain demand is tackled and optimization algorithms are offered for the balancing of such lines. Building an assembly line is a commitment of several months or even years, it is understandable that the demand will fluctuate during the lifetime of an assembly line. New products are developed, others are removed from the market, and the decision of the final customer plays a role on the immediate demand. Therefore, the variation and uncertainty of the demand must be accounted for in an assembly line. In this book, methods dealing with random demand or random production sequence are presented, so that the practitioners can plan more robust and efficient production systems.
Assembly Line Rebalancing With Non Constant Task Time Attribute
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Author : Yuchen Li
language : en
Publisher:
Release Date : 2016
Assembly Line Rebalancing With Non Constant Task Time Attribute written by Yuchen Li and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Assembly-line methods categories.
Assembly line has been widely used in producing complex items, such as automobiles and other transportation equipment, household appliances and electronic goods. Assembly line balancing is to maximize the efficiency of the assembly line so that the optimal production rate or optimal length of the line is obtained. Since the 1950s there has been a plethora of research studies focusing on the methodologies for assembly line balancing. Methods and algorithms were developed to balance an assembly line, which is operated by human workers, in a fast and efficient fashion. However, more and more assembly lines are incorporating automation in the design of the line, and in that case the line balancing problem structure is altered. For these automated assembly lines, novel algorithms are provided in this dissertation to efficiently solve the automated line balancing problem when the assembly line includes learning automata. Recent studies show that the task time can be improved during production due to machine learning, which gives the opportunities to rebalance the assembly line as the improvements occur and are observed. The concept of assembly line rebalancing or task reassignment are crucial for the assembly which is designed for small volume production because of the demand variation and rapid innovation of new product. In this dissertation, two forms of rebalancing are provided, forward planning and real time adjustment. The first one is to develop a planning schedule before production begins given the task time improvement is deterministic. The second one is to rebalance the line after the improvements are realized given the task time improvement is random. Algorithms address one sided and two sided assembly lines are proposed. Computation experiments are performed in order to test the performance of the novel algorithms and empirically validate the merit of improvement of production statistics.
Risk Oriented Stochastic Assembly Line Balancing
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Author : Prakhash Udayakumar
language : en
Publisher:
Release Date : 2010
Risk Oriented Stochastic Assembly Line Balancing written by Prakhash Udayakumar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Electronic dissertations categories.
In a single model manual assembly line, product flows through series of workstations arranged in a sequential manner. Each workstation has a finite number of tasks and each task has probabilistic processing time. Due to the probabilistic nature of task time, the task times can exceed the expected standard task time at some instance. If a series of tasks exceeds in a particular station, then there is a risk that the product may exceed the cycle time. As a result, a small variability in task time can lead to large delays in the delivery lead time of the product. Most of the line balancing approaches assume deterministic task times thereby ignoring the impact of task time variability on the system performance measures. The larger the variability of task time, the higher the risk associated with the station. In this paper, the impact of variability in task time is quantified in terms of risk. Risk is defined as potential loss caused when the product fails to complete within the specified station time. For line balancing, in addition to cycle time balancing, the risk should be balanced in order to improve the performance of the assembly line. In this research, a risk based assembly line balancing technique for highly variable task times is presented. The results from the case study show that the method increases the performance of the assembly line while balancing the risk of delays at each station.
Dise O Y An Lisis De Sistemas Productivos
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Author : Jose M. Framiñán Torres
language : es
Publisher: Marcombo
Release Date : 2023-03-05
Dise O Y An Lisis De Sistemas Productivos written by Jose M. Framiñán Torres and has been published by Marcombo this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-03-05 with Business & Economics categories.
El diseño de un sistema productivo es una de las decisiones más importantes y complejas en la organización industrial y en la gestión de operaciones, tanto en términos de los elevados costes y potenciales beneficios que involucra, como de la elevada incertidumbre respecto a los datos que se manejan a la hora de tomar la decisión. Este libro aborda de forma integral las principales cuestiones relativas al diseño y al análisis de los procesos productivos. Los principios que gobiernan el flujo de materiales e información en los procesos productivos son presentados de forma sistemática y rigurosa, así como el análisis de los efectos de las averías, los problemas de calidad, las paradas programadas o el empleo de lotes de fabricación y el transporte en las medidas de desempeño de estos sistemas. Asimismo, en el libro se estudia el diseño eficiente de las distintas configuraciones de los sistemas productivos empleados habitualmente en las empresas de fabricación: líneas de flujo, talleres, sistemas de fabricación flexible o la fabricación celular. Sin duda, si quiere convertirse en todo un experto en el diseño y el análisis de sistemas productivos, este libro será su gran aliado.
Minimizing Costs In Assembly Line Balancing With Stochastic Task Times And Off Line Repairs
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Author : Fred N. Silverman
language : en
Publisher:
Release Date : 1983
Minimizing Costs In Assembly Line Balancing With Stochastic Task Times And Off Line Repairs written by Fred N. Silverman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Assembly-line methods categories.
Operations Management
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Author : David Bennett
language : en
Publisher:
Release Date : 2006
Operations Management written by David Bennett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Manufacturing processes categories.
Conference Papers Index
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Author :
language : en
Publisher:
Release Date : 1979
Conference Papers Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Engineering categories.
Monthly. Papers presented at recent meeting held all over the world by scientific, technical, engineering and medical groups. Sources are meeting programs and abstract publications, as well as questionnaires. Arranged under 17 subject sections, 7 of direct interest to the life scientist. Full programs of meetings listed under sections. Entry gives citation number, paper title, name, mailing address, and any ordering number assigned. Quarterly and annual indexes to subjects, authors, and programs (not available in monthly issues).
Ebook Operations And Supply Chain Management Global Edition
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Author : F. Robert Jacobs
language : en
Publisher: McGraw Hill
Release Date : 2013-06-16
Ebook Operations And Supply Chain Management Global Edition written by F. Robert Jacobs and has been published by McGraw Hill this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-16 with Business & Economics categories.
Resourceful companies today must successfully manage the entire supply flow, from the sources of the firm, through the value-added processes of the firm, and on to the customers of the firm. The fourteenth Global Edition of Operations and Supply Chain Management provides well-balanced coverage of managing people and applying sophisticated technology to operations and supply chain management.
Rwanda
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Author : International Monetary Fund. African Dept.
language : en
Publisher: International Monetary Fund
Release Date : 2022-12-19
Rwanda written by International Monetary Fund. African Dept. and has been published by International Monetary Fund this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-19 with Business & Economics categories.
Supported by a large policy package, Rwanda’s economy rebounded in 2021 after contracting in the preceding year due to the COVID-19 shock. However, the country now faces multi-faceted challenges—pandemic scars, headwinds from the war in Ukraine, and climate-related shocks, meanwhile inflationary pressures have increased markedly. Downside risks are significant from the war spillovers, through further pressures on energy, food, and fertilizer prices, global financial tightening, and slowdown in major trading partners, in addition to climate-related shocks. Against this backdrop, the authorities have requested a new Policy Coordination Instrument (PCI) and an arrangement under the Resilience and Sustainability Facility (RSF) to support their efforts in maintaining macroeconomic stability, advancing their reform agenda, including on climate to enhance Rwanda’s resilience to climate-related shocks, and insuring against downside risks. They will cancel the current PCI (expiring in June 2023) upon approval of the new PCI.