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 22 for “"material handling system"”.
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Automating Flow of a Material Handling System
Amazon uses a system of interconnected manned work processing stations linked by conveyances that route items from different parts of the warehouse into a single order for packing. This thesis will examine one such system, which circulates items throughout the system in trays. Leaders manage and …
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Analysis and productivity improvement of an automated material handling system through simulation
… has grown, the company has invested in warehouse systems similar to those traditionally found in manufacturing. These systems are a complex and interconnected set of manned work processing stations linked together by conveyance. This thesis examines one such system, arranged as a set of parallel …
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Characterization of Performance, Robustness, and Behavior Relationships in a Directly Connected Material Handling System
In the design of material handling systems with complex and unpredictable dynamics, conventional search and optimization approaches that are based only on performance measures offer little guarantee of robustness. Using evidence from research into complex systems, the use of behavior-based …
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An integrated approach for the design of production and material-handling system using the concept of manufacturing system states
… history of profound research on manufacturing systems, researchers have rarely explored the aspect of integrating the two key components of manufacturing systems: production system and material-handling system (MHS). Often they have focused on one component while ignoring the other. During the …
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Integration of operation allocation and material handling in the design of flexible manufacturing systems.
Operation Allocation and Material Handling Systems Selection are important functions of a manufacturing system and as such must be considered within an integrated approach to manufacturing systems design. This work, an extension to the work done by Paulo (1999) proposes to integrate two important …
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Laser Cutting Machine: Justification of initial costs
… Factors such as common line cutting, automated material handling system and cutting time were involved in justification of the initial cost of a laser-cutting machine. Comparative statistics on appropriate factors accurately determine and justify the initial cost of a laser-cutting machine.
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Job shop scheduling to minimize makespan with explicit material handling considerations
… efficient operation of a Flexible Manufacturing System (FMS) can be achieved by exploiting (i) Routing Flexibility and (ii) Scheduling Flexibility. Routing flexibility allows the selection of a machine on which an operation should be performed. Scheduling flexibility allows the determination of …
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Constraint-based facilities planning
… on the effectiveness of the layout and the material handling system. A relationship was developed between variations in production oriented parameters and its impact on the facility size and final cost of the product being manufactured exclusively in terms of machine time, operator time and …
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Dynamic scheduling of flexible manufacturing systems : a study of machine and material handling control strategies
… interest in automated and Flexible Manufacturing Systems (FMS). The focus of this research is to develop and test on-line scheduling rules for both machines and material handling sub-systems of an FMS. The scheduling rules use various priority attributes and relevant information concerning the …
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Design and implementation of flexible manufacturing systems: some analysis concepts
… and implementing a flexible manufacturing system. SIM-Q, an input-generator for simulation modelling developed in this study provides a powerful and expedient tool for resolving the material handling system selection, work scheduling, input control, and real time operation problems. The …
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Evaluation of color-based machine vision for lumber processing in furniture rough mills
… application of a color-based machine vision system under development at Virginia Tech for lumber processing in the furniture rough mill. The evaluation was done by conducting a yield study using 134 red oak boards. ROMI-RIP, a rip-first simulation program by Thomas (1995), was used to …
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A methodology that integrates the scheduling of job sequencing and AGV dispatching in a FMS
A Flexible Manufacturing System (FMS) is an integrated system consisting of several automated work centers interconnected by an automated material handling system. An integrated scheduling methodology is required to schedule all FMS sub-systems. The overall objective of this research was to develop …
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Design of dynamic facility layouts under production and material handling capacity constraints
… constraints, such as facility layout and material handling, and production constraints, such as machine capacity and type of machines. Research until now has focused on addressing demand requirements under static and dynamic conditions. However, facility layout approaches have assumed …
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Methodology to develop hybrid simulation/emulation model.
… short term future performance of manufacturing system has become more significant than ever. An application of simulation that has attracted attention is for testing of control logic before commissioning on site by using a detailed simulation model called emulation model. However, though the …
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A design methodology for operational control elements for automatic guided vehicle based material handling systems
… of an Automatic Guided Vehicle (AGV) based material handling system is presented. The methodology, which is composed of an integrated model of an AGV based system, was implemented using simulation techniques. The model views a manufacturing function as consisting of machining, queueing, and …
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Methodologies for manufacturing system selection and for planning and operation of a flexible manufacturing system
… for the overall design of manufacturing systems. The methodology consists of solutions to four levels of problems, namely, (1) manufacturing system selection, (2) shop loading, (3) machine loading and tool allocation, and (4) testing the feasibility of a schedule and determining …
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Fuzzy Control of Flexible Manufacturing Systems
Flexible manufacturing systems (FMS) are production systems consisting of identical multipurpose numerically controlled machines (workstations), automated material handling system, tools, load and unload stations, inspection stations, storage areas and a hierarchical control system. The latter has …
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Material transport system design in manufacturing
This dissertation focuses on the material transport system design problem (MTSDP), integrating decisions of technology selection and flow network design. This research is motivated by the design of material transport systems (MTS) in manufacturing plants. The objective is to design a MTS with …
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