Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 110 for “"Material flow"”.
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Material Flow Behavior in Friction Stir Welding
Material flow in friction stir welding is largely uncharacterized due to the difficulty in material flow measurement and visualization in metals. This study investigates plasticine for use as an analog for modeling material flow in friction stir welding (FSW) of metals. Qualitative comparisons …
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Material flow simulation in a nuclear chemical process
… fuel reprocessing plant the special nuclear materials (SNM) are received as constituents of spent fuel assemblies, are converted to liquid form, and undergo a series of chemical processes. Uncertainties in measurements of SNM at each stage of reprocessing limit the accuracy of simple material …
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Segregation and material flow along low aspect SAG mills
… better understanding of axial segregation and flow of particles along SAG mills. Additionally, the current SAG mill models developed using "short" Australian and North American style mills exposes inaccuracies when applied to predict the performance of "long" mills. Thus the results of this …
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Material flow analysis of concrete in the United States
Concrete is the second most consumed material in the world after water. Due to the sheer mass of concrete consumed annually and its associated resource and environmental impacts, improving the materials management of concrete consumption is a critical problem in the United States. It is …
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Automated Guided Vehicles for Material Flow in Fulfillment Centers
… labor involved in their role often moving empty material throughout the facility. The improved process path is proposed with integration of AGVs and modeled using a process-based discrete-event simulation framework. The specific hardware and software requirements for an AGV to fit the proposed …
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Methodology for the synchronization of material flow in an assembly plant
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1996, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
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Material flow analysis of plastic in Iceland : moving towards a circular economy
This research thesis analyzes the flow of plastic materials in Iceland and highlights changes needed to move the current system towards a more circular economy. A circular economy is an economic system that seeks to use materials to their fullest without needing to send them to a landfill and helps …
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Simulation model used as design improvement decision tool for warehouse material flow
The basis for this thesis involved a six and a half month LFM internship at Efficient Storage, Shipping, and Selection. ES3, Efficient Storage, Shipping, and Selection, is a third party logistics firm that specializes in a vendor-neutral consolidation model for the food distribution industry. ES3 …
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Development of solutions to reduce variability in material flow at a factory
This thesis focuses on improving the flow of material in an analytical instrument company, the Waters Corporation. One main pain point experienced at Waters is an observed uneven distribution in when instruments were completed throughout the work week. In addition, limitations in the number of …
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Material Flow and Microstructure Evolution during Additive Friction Stir Deposition of Aluminum Alloys
… overcoming these issues. Because the deposited material stays in the solid state during printing, there are no melting and solidification events and the process can result in as-printed material that is fully-dense with equiaxed, fine grains. As AFSD is an emerging process, developing an …
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Material flow and microstructure evolution in friction stir welding of AA6111 alloy sheets
<p>"Material flow and microstructure evolution are the two important aspects of the Friction stir welding (FSW) technique, which control the properties and performance of the friction stir welds. The present work investigates these two aspects of the FSW with main emphasis on the friction stir lap …
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A Finite Element Simulation of Temperature and Material Flow in Fricton Stir Welding
… the predictability of temperature evolution and material flow within the plunge portion of the process. Previous modeling created more heating within the billet than experimental results, probably due to the simplification of the simulation with adiabatic boundary conditions. More realistic …
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Urban-scale material flow analysis in a South African context: a Cape Town feasibility study
Urban-scale Material Flow Analyses (MFAs) in the global south provide unique challenges compared to national MFAs and to urban MFAs in the north. In order to determine the feasibility of undertaking an urban-scale MFA in the global south, this dissertation sets out to undertake an MFA on Cape Town, …
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Factory and Material Flow Design for Mass Production of an Advanced Process Control Educational Device
… area to effectively support mass production. Material flow and production line was designed and modeled by understanding and performing time studies on all manufacturing processes and logistics required for each component. Scheduling of the part fabrication process was also conducted to …
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Optimization of material flow by lean tools and RFID integration into a vendor-involved eKanban system
… companies must have a proper and up-to-date material flow design to ensure agile and resilient operations. The importance of monitoring and controlling flow has been made even more apparent with the recent COVID-19 pandemic. Therefore, this work aims to study the material flow system at a …
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Driving cycle time reduction through an improved material flow process in the electronics assembly manufacturing cell
… project was undertaken to improve the material flow process. A current state analysis of the process showed an opportunity to improve process standardization and prioritization while lowering inventory levels. In addition to working with managers from EA to evaluate the material flow …
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Optimization of material flow in the nuclear fuel cycle using a cyclic multi-stage production-to-inventory model
… of the fuel cycle. The model allows for cyclic flow (feedback) of materials, material flow conversion factors at each stage, production lag times at each stage, and for escalating costs of uranium ore. It does not allow shortages to occur in inventories. The model is optimized by the application …
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Using material flow cost accounting to determine the impacts of packaging waste costs in alcoholic beverage production in an alcoholic beverage company in Durban
Submitted in fulfillment of the requirements of the Master of Accounting degree, Durban University of Technology, Durban, South Africa, 2016.
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