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Modeling And Analysis Of A Reverse Supply Chain Network For Lead-Acid Battery Manufacturing., Hailun (Helen) Zhang
Modeling And Analysis Of A Reverse Supply Chain Network For Lead-Acid Battery Manufacturing., Hailun (Helen) Zhang
Electronic Theses and Dissertations
The North American lead-acid battery industry gains its environmental edge from its employment of closed-loop life cycle production. Nowadays, the typical new lead-acid battery contains 60 to 80 percent recycled lead and plastics. In this thesis, the closed-loop supply chain of a lead-acid battery manufacturing process has been investigated which extends the traditional supply chain to the entire product life cycle. A new tactical planning model has been developed for the entire closed-loop manufacturing process including purchasing, production, and end-of-life product return and recycling. The model is a multi-objective, multi-echelon mixed integer linear programming model, which minimizes the total costs …
Evaluation Of The Reliability Of An Ergonomic Decision System., Derek Ian Dawson
Evaluation Of The Reliability Of An Ergonomic Decision System., Derek Ian Dawson
Electronic Theses and Dissertations
A novel approach deemed the Ergonomic Decision System (EDS) was designed to address the physical requirements of modern industry. The EDS, as the name implies, is a system that uses a series of questions and resulting choices to determine the path to the most appropriate ergonomic analysis tool for a given occupational task. The face validity of the EDS has been established through an extensive review of literature. Reliability was evaluated both within and between subjects. In two facilities, 6 Jobs were chosen based upon both injury and illness data and the differing physical requirements of each. These Jobs were …
New Mathematical Model For Assessment Of Concurrent Engineering., Guoli Jian
New Mathematical Model For Assessment Of Concurrent Engineering., Guoli Jian
Electronic Theses and Dissertations
Recently, global competition has led to shorter product life cycles and increased technological sophistication. Products are becoming more complex due to rapid technological developments and increasing consumer demands for lower costs, greater variety, and greater performance. At the same time the proliferation of new technologies is rendering products obsolete at an increasingly rapid pace. These market and technology trends lead to the emerging of concurrent engineering. This thesis firstly will give a definition and briefly introduction of concurrent engineering, including its fundamentals, and the benefits of concurrent engineering, its difficulties and caveats. After that this thesis will introduce an implementation …
Quality Prediction In Manufacturing System Design., Omayma Abdel Aziz Nada
Quality Prediction In Manufacturing System Design., Omayma Abdel Aziz Nada
Electronic Theses and Dissertations
Manufacturing system design can significantly affect the resulting product quality level. Therefore, the early prediction of product quality, as affected by manufacturing system configuration decisions, can enhance the manufacturer's competitiveness through achieving higher quality levels at lower costs in a responsive manner. In this research, a conceptual framework is proposed for the proactive assessment of product quality in terms of the manufacturing system configuration parameters. A new comprehensive model that can be used in comparing different system configurations based on quality is developed using Analytic Hierarchy Process. In addition, a hierarchical fuzzy inference system is developed to model the ill-defined …
Six Sigma Methodology In Automobile Industry., Muhammad Hasib
Six Sigma Methodology In Automobile Industry., Muhammad Hasib
Electronic Theses and Dissertations
In a mature industry like the Truck industry, competition is getting harder and harder. A few strong manufactures are doing there very best to cut cost in order to gain market shares from the others within the market. To be able to generate cost Savings Company must be flexible & prepare to adapt & implement new ideas. This thesis was carried out at the International Truck & Engine Corporation Garland Assembly Plant, Texas, which employs 1000 employees. The Plant Assembles Heavy duty & Severe service Trucks. The purpose of this Research is to Investigate, Study, & analyzes the existing process …
Modeling Reliability Considerations In The Design And Analysis Of Cellular Manufacturing Systems., Kanchan Kumar Das
Modeling Reliability Considerations In The Design And Analysis Of Cellular Manufacturing Systems., Kanchan Kumar Das
Electronic Theses and Dissertations
Reliability plays a vital role in the overall performance of cellular manufacturing systems (CMSs). Machine failures significantly impact the fulfillment of due dates and other performance criteria, despite the option of part rerouting to alternative workstations. These facts suggest a need for the consideration of machine reliability during the operation allocation process. Attempting to improve a system's reliability invariably results in higher costs. It follows that the ideal strategy for achieving optimum balance lies in an approach that integrates both cost and reliability information. A mixed integer multi-objective mathematical programming model that incorporates machine reliability and cost considerations is developed …