Institute for Systems Research

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Subject: search.filters.subject.manufacturablility

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Now showing 1 - 3 of 3
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    REU Report: A Simulated Study of Temperature as a Function of Gas Flow Rate in a Chemical Vapor Deposition Reactor
    (1999) Wilson, Erin A.; Adomaitis, Raymond A.; ISR
    A study to further simulation research of a commercial chemical vapor deposition (CVD) reactor is presented. A simulation is created using the computational fluid dynamics software package, Fluent (version 4). The variation of gas temperature inside the reactor system, as a function of gas flow rate, is examined. Data is collected for trials of several initial flow rates and iterations. Results from Fluent are to be compared to data from other simulation techniques to test accuracy and reliability.
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    Reducing Manufacturing Cycle Time during Product Design
    (1999) Herrmann, Jeffrey W.; Chincholkar, Mandar; ISR
    This paper describes an approach that can reduce manufacturing cycle time during product design. Design for production (DFP) determines how manufacturing a new product design affects the performance of the manufacturing system. This includes design guidelines, capacity analysis, and estimating manufacturing cycle times. Performing these tasks early in the product development process can reduce product development time. Previous researchers have developed various DFP methods for different problem settings. This paper discusses the relevant literature and classifies these methods. The paper presents a systematic DFP approach and a manufacturing system model that can be used to estimate the manufacturing cycle time of a new product. This approach gives feedback that can be used to eliminate cycle time problems. This paper focuses on products that are produced in one facility. We present an example that illustrates the approach and discuss a more general approach for other multiple-facility settings.
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    Design Similarity Measures for Process Planning and Design Evaluation
    (1997) Herrmann, Jeffrey W.; Singh, Gurdip; ISR
    Design engineers and process planners need to search for similar designs. Design engineers use similar designs to estimate a new design's manufacturability. Like process planners, who need to generate process plans before production begins, design engineers can use an existing, similar design's plan to create a new process plan. Then, they can evaluate the new design. Variant process planning, a common process planning approach, uses a design similarity measure to identify the most similar design and retrieve a useful process plan. However, standard design similarity measures do not explicitly consider the production process. This paper presents an approach for developing a new class of plan-based design similarity measures. Such a measure explicitly exploits process plan similarity and thus improves the variant process planning approach. An example illustrates the approach and compares the new measure and a traditional group technology code-based approach.