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Full-Text Articles in Engineering
A Multi-Kanban Model For Disassembly, Surendra Gupta, Gun Udomsawat, Sagar Kamarthi
A Multi-Kanban Model For Disassembly, Surendra Gupta, Gun Udomsawat, Sagar Kamarthi
Sagar Kamarthi
In this paper we demonstrate how kanbans can be used in a disassembly line setting. Disassembly line is quite different from assembly line in terms of material movement, demand arrival and inventory level fluctuation. We discuss these differences and introduce the concept of a multi-kanban mechanism to cope with them. With the help of a simulation model (developed using the ARENA software), we show that the modified kanban mechanism is in fact an effective tool for a disassembly line setting. An example is presented to illustrate the concept.
Design Of An Integrated Component Recovery System, Pitipong Veerakamolmal, Surendra Gupta
Design Of An Integrated Component Recovery System, Pitipong Veerakamolmal, Surendra Gupta
Surendra M. Gupta
This paper presents a two-stage disassembly and retrieval system that provides a unique solution for planning selective component recovery from products. The solution approach uses a process sequencing technique to schedule the operations in both stages to optimize the operational makespan.
A Multi-Phase Mathematical Programming Approach To Strategic Planning Of An Efficient Reverse Supply Chain Network, Kishore Pochampally, Surendra Gupta
A Multi-Phase Mathematical Programming Approach To Strategic Planning Of An Efficient Reverse Supply Chain Network, Kishore Pochampally, Surendra Gupta
Surendra M. Gupta
Strategic planning of a supply chain network is one of the most challenging aspects of reverse logistics. To effectively satisfy drivers such as profitability, environmental regulations and asset recovery, only the most economical used products must be reprocessed in only the recovery facilities that have the potential to efficiently reprocess them. Due to uncertainties in supply, quality and reprocessing times of used-products, the cost-benefit function in the literature that selects the most economical product to reprocess from a set of used-products is not appropriate for direct adoption. Moreover, due to the same uncertainties, any traditional forward supply chain approach to …
System Dynamics Approach In Inventory Management Of End-Of-Life Products In A Disassembly Line, Badr Johar, Surendra Gupta
System Dynamics Approach In Inventory Management Of End-Of-Life Products In A Disassembly Line, Badr Johar, Surendra Gupta
Surendra M. Gupta
A major challenge original equipment manufacturers (OEMs) currently face is how to implement an effective reverse supply chain network that is both cost effective and efficient. The rapid increase in the end-of-life (EOL) products returns from end customers back to origin for recovery or proper disposal can be said one of the main reasons behind this interest. Thus, the purpose of this paper is to examine the relationship between all elements of inventory management in the disassembly context using the system dynamic modeling approach to analyze the inventory of disassembled parts. Analysis of different market scenarios is conducted. The system …
Multi-Criteria Decision Making For Disassembly-To-Order System Under Stochastic Yields, Surendra Gupta
Multi-Criteria Decision Making For Disassembly-To-Order System Under Stochastic Yields, Surendra Gupta
Surendra M. Gupta
In this paper, we consider the problem of determining the optimal number of returned products to disassemble to fulfill the demand for a specified number of parts. This is known as the disassembly-to-order (DTO) problem. The deterministic yield version of this problem has been addressed in the literature. Recently, the stochastic yield version of this problem with a single objective has also been reported in the literature. In this paper, we extend the methodology to include multiple objectives. To this end, we model the DTO problem using integer goal programming. The stochastic problem is solved by transforming it into its …
A Multi-Kanban Model For Disassembly, Surendra Gupta, Gun Udomsawat, Sagar Kamarthi
A Multi-Kanban Model For Disassembly, Surendra Gupta, Gun Udomsawat, Sagar Kamarthi
Surendra M. Gupta
In this paper we demonstrate how kanbans can be used in a disassembly line setting. Disassembly line is quite different from assembly line in terms of material movement, demand arrival and inventory level fluctuation. We discuss these differences and introduce the concept of a multi-kanban mechanism to cope with them. With the help of a simulation model (developed using the ARENA software), we show that the modified kanban mechanism is in fact an effective tool for a disassembly line setting. An example is presented to illustrate the concept.
Disassembly Sequence Planning For Complete Disassembly In Product Recovery, Askiner Gungor, Surendra Gupta
Disassembly Sequence Planning For Complete Disassembly In Product Recovery, Askiner Gungor, Surendra Gupta
Surendra M. Gupta
Disassembly is a key element for retrieving the desired subassemblies and/or parts from a product. However, determining an efficient disassembly sequence plan (DSP) is an NP-complete problem. In this paper, we propose a methodology to generate a near optimum DSP for a product. The methodology is illustrated using an example.
A Modified Kanban System For Disassembly, Surendra Gupta, Elif Kizilkaya
A Modified Kanban System For Disassembly, Surendra Gupta, Elif Kizilkaya
Surendra M. Gupta
We present a new Kanban system specifically developed for material control and scheduling in a disassembly environment. We briefly highlight the differences between the new (modified) and the traditional Kanban system. We assert that in the disassembly environment, the Kanban system is superior to the push system currently practiced in industry. To that end, we consider a case example and test its performance by experimenting with several different scenarios. In all instances, the Kanban system outperforms the push system.
Use Of Flexible Kanban For Material Flow Control In A Disassembly Process, Surendra Gupta, Elif Kizilkaya
Use Of Flexible Kanban For Material Flow Control In A Disassembly Process, Surendra Gupta, Elif Kizilkaya
Surendra M. Gupta
Disassembly is one of the proposed solutions to the increased environmental problem of large-scale disposal of manufactured products. Disassembly process brings with it a lot of unresolved material control issues. In this paper we illustrate the implementation of the recently developed Flexible Kanban System to cope with the uncertainties that are unique to the disassembly system.
Computational Complexity Of A Reverse Manufacturing Line, Surendra Gupta, Seamus Mcgovern
Computational Complexity Of A Reverse Manufacturing Line, Surendra Gupta, Seamus Mcgovern
Surendra M. Gupta
Disassembly has recently gained attention in the literature due to its role in product recovery. Disassembly activities take place in various recovery operations including remanufacturing, recycling, and disposal. The disassembly line is the best choice for automated disassembly of returned products. It is therefore important that the disassembly line be designed and balanced so that it works as efficiently as possible. However, finding the optimal balance is computationally intensive with exhaustive search quickly becoming prohibitively large, even for relatively small products, due to exponential growth. In this paper, complexity theory is reviewed and used to prove that the DISASSEMBLY LINE …
Multi-Kanban Mechanism For Appliance Disassembly, Surendra Gupta, Gun Udomsawat
Multi-Kanban Mechanism For Appliance Disassembly, Surendra Gupta, Gun Udomsawat
Surendra M. Gupta
The use of household appliances continues to rise every year. A significant number of End-Of-Life (EOL) appliances are generated because of the introduction of newer models that are more attractive, efficient and affordable. Others are, of course, generated when they become non-functional. Many regulations encourage recycling of EOL appliances to reduce the amount of waste sent to landfills. In addition, EOL appliances offer the appliance manufacturing and remanufacturing industries a source of less expensive raw materials and components. For this reason product recovery has become a subject of interest during the past decade. In this paper, we study the disassembly …
Economics Of Pc Recycling, Jacqueline Isaacs, Surendra Gupta, Boon Jane
Economics Of Pc Recycling, Jacqueline Isaacs, Surendra Gupta, Boon Jane
Surendra M. Gupta
As the use of personal computers (PCs) increases, their short life cycle and the fact that they contain many hazardous materials means that their retirement and disposal represents a significant environmental concern. Many communities are mandating the recycling of these PCs, to recover parts and materials, and to minimize the amount of waste landfilled or incinerated. An industry to recycle these PCs is evolving to take advantage of this stream of materials. At present, PC recycling is not profitable. This paper investigates the factors that most influence the net cost to recycle PCs so that PC manufacturers, recyclers and legislators …
Multi-Criteria Ant System And Genetic Algorithm For End-Of-Life Decision Making, Surendra Gupta, Seamus Mcgovern
Multi-Criteria Ant System And Genetic Algorithm For End-Of-Life Decision Making, Surendra Gupta, Seamus Mcgovern
Surendra M. Gupta
Disassembly takes place in remanufacturing, recycling, and disposal with a line being the best choice for automation. The disassembly line balancing problem seeks a sequence which: is feasible, minimizes workstations, and ensures similar idle times, as well as other, disassembly-specific concerns. Finding the optimal balance is computationally intensive due to factorial growth. Ant colony optimization and genetic algorithm metaheuristics are presented and compared along with an exa mple to illustrate the implementation. Conclusions drawn include the consistent generation of optimal or near-optimal solutions, the ability to preserve precedence, the speed of the metaheuristics, and their practicality due to ease of …
Determination Of Base Kanban Level For Multi-Kanban Mechanism In A Disassembly Line, Surendra Gupta, Gun Udomsawat
Determination Of Base Kanban Level For Multi-Kanban Mechanism In A Disassembly Line, Surendra Gupta, Gun Udomsawat
Surendra M. Gupta
In this paper, we propose an application of a pull type production control mechanism for a disassembly line setting. We discuss complications and justify the use of pull type mechanism in a disassembly line. We introduce a multikanban mechanism for a multi-product disassembly line where demand for components can arrive at any level. We define the kanban routing rules to minimize the inventory of a system while maintaining a customer service level comparable to a push system. We suggest a method of determining the proper number of base kanbans and demonstrate its effectiveness by using a simulation model and implementing …