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.
Results
Showing 1 to 20 of 100 for “"manufacturing cost"”.
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Manufacturing cost modeling and robust process design
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1992 and Thesis (M.S.)--Sloan School of Management, 1992.
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Aerospace composite manufacturing cost models as geometric programs
… fraught with billions of dollars of production cost overruns. This research develops a novel approach to manufacturing cost modeling during the conceptual design phase using Geometric Programming (GP). A new formulation of a closed queuing network as a GP is presented to capture the crucial cost …
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A Methodology Incorporating Manufacturing System Capacity in Manufacturing Cost Estimation
… Design for Manufacturability to integrate manufacturing and design has been shown over the years to reduce manufacturing costs and increasing overall revenues. Much research has been provided with a focus on integrating the design of a product and its respective manufacturing processes, but …
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A Decision Support System for Advanced Composites Manufacturing Cost Estimation
… use of advanced composites in aerospace manufacturing has led to the development of new production processes and technology. The implementation of advanced composites manufacturing technology is poorly served by traditional cost accounting methods, which distort costs by using …
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A parametric model for reducing the manufacturing cost of the traveling wave tube
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Advanced Design Optimization for Composite Structure: Stress Reduction, Weight Decrease and Manufacturing Cost Savings
… and a quote for injection molding tooling cost for production was obtained and the first prototype was built in addition of six months. The risks are identified and material characterization tests are proposed.</em></p> <p><em>The objective of this project was redesigning an aluminum made …
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Addressing equipment set-up time and manufacturing cost through real time inline inspection in tantalum wire manufacturing
… was able to catch common wire defects under manufacturing conditions (wire speed). Furthermore, defect density limits were defined based on data collected during this study. A production version of the wire inspection system was jointly developed with the equipment supplier and an order was …
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Multidisciplinary structural design and optimization for performance, cost, and flexibility
Reducing cost and improving performance are two key factors in structural design. In the aerospace and automotive industries, this is particularly true with respect to design criteria such as strength, stiffness, mass, fatigue resistance, manufacturing cost, and maintenance cost. This design …
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Commercial assessment of roll to roll manufacturing of electronic displays
The cost of manufacturing electronic displays currently limits the range of applications and markets into which it is currently economically feasible to adopt displays. Roll-to-roll manufacturing has been identified by the display industry as a new and fundamentally different manufacturing paradigm …
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Feature based costing of extruded parts
… presents the creation of a model to predict the manufacturing cost of parts made by the extrusion process. Feature Based Costing (FBC) techniques have been used to develop the cost model, which is intended to be used early in the design phase of a part, when the geometry and the material are …
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Comparison of Multieffect Distillation and Extractive Distillation Systems for Corn-Based Ethanol Plants
… than the multieffect distillation system on a cost per gal ethanol basis. This work gives an energy consumption of 29987 Btu/gal ethanol and water consumptions 2.82 gal/gal ethanol for the multieffect distillation system at a manufacturing cost of $3.03/gal ethanol. For the extractive …
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A three axis CNC router design
A preliminary design of a low-cost, three-axis, computer numerically controlled (CNC) router was completed with the goal of bringing the advantages of numerically controlled machine tools to the woodshop. To reduce cost, a novel single rail design was employed. The number of custom parts was kept …
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Novel micro/nanofluidic system for separation and monitoring of cells and proteins in perfusion
… for many health conditions. Continuous biomanufacturing is one of the top technology trends in the biopharmaceutical industry to improve biological product quality and reduce manufacturing cost. This thesis introduces novel high-throughput microfluidic cell separation and nanofluidic …
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The vertical-mill stage : design of a vertical movement stage for surface machining
… use of three dimensional patterns on walls, the manufacturing cost must be reduced. The goal of this project is to design a machine for vertical axis movement which can be measured and controlled. The key issues addressed in this thesis, are the motion past obstacles in the extrusions, a …
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A persistent-mode MgB₂ 0.5-T/240-mm solid-nitrogen-cooled magnet for MRI
… advanced and innovative, high-quality, low-cost, easy-to-operate MRI magnets. Because superconductors carry more than 100 times higher current density than copper, while generating no Joule heat, they are the only practical choice for diagnostic MRI magnets with field strengths above 1 T. A …
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Design and manufacturing analysis of a window shading system
… specifications. This thesis focuses upon a manufacturing cost analysis and redesign of a gearbox assembly for the window shading system. This is a logical next step in the product's development. An estimate for the assembly time for the current version of the gearbox assembly is found. The …
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Cost analysis and comparison of tray container style storage and stackable tote style storage
… importance. This paper focuses on comparing the cost of two potential shelf designs for storing product in an automated distribution center, a tray container style shelf and a stackable tote style shelf. Tray container style shelf has lower manufacturing costs, assembly cost and time, while …
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Implementation of RFID in a low volume high flexibility assembly plant : module component tracking
… (VSEA) to smooth the production and reduce the manufacturing cost. Without an efficient way to track on its high-value components, VSEA thereby spends hundreds of thousands of dollars to respond to customers' fraudulent claims and adds extra burdens to manufacturing teams. RFID system is …
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System modeling, analysis, and optimization methodology for diesel exhaust after-treatment technologies
… automotive companies and suppliers. Balancing manufacturing cost, meeting emission performance, developing competitive engine power, reducing weight and operational costs are all tradeoffs that companies and operators have to resolve for new aftertreatment technologies. However, no single …
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Analysis and Experimental Comparison of Models of a New Form of Continuously Variable Transmission
… by many engineering companies as a way to combat manufacturing cost, improve the feasibility of systems such as electric cars and small-scale wind power generation, and improve efficiency of many mechanical systems such as industrial pumps and fans. Successful, wide-scale implementation of …
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