Combining Physical and Statistical Methods for Modeling Novel Manufacturing Processes

结合物理和统计方法对新型制造流程进行建模

• 批准号: 9415001
• 负责人: Susan Finger
• 金额: $ 24.78万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-01-01 至 1998-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9415001&HistoricalAwards=false
• 关键词: Combining; Physical; Statistical; Methods; Modeling

9415001 Finger The award is for creating a methodology for acquiring process models of novel manufacturing processes using statistical methods, physical models, and experimentation. The process that will be studied is the shape deposition melting process, which is a solid freeform fabrication process. The part is built up by successively depositing molten materials, such as steel and copper, in thin layers using a microcasting process. Other subprocesses used are thermal spraying, shot peening, and machining. Only the microcasting and machining subprocesses will be studied using the proposed methodology. Statistical design of experiments will be used to create coarse process models that identify important process variables and relationships among them. For subprocesses not well understood at present, models will be developed based on the underlying physics of the subprocesses. Surrogate models of different levels of complexity and detail will also be abstracted from the detailed models. The methodology to be developed is particularly useful for studying the shape deposition process which is a rapid prototyping process. More conventional processes would also benefit from the methodology.

9415001 Finger获奖理由：该奖项旨在通过统计方法、物理模型和实验，创造一种获取新型制造过程过程模型的方法。所要研究的工艺是形状沉积熔化工艺，这是一种固体自由形状的制造工艺。该部件是通过使用微铸造工艺将熔化的材料（如钢和铜）连续沉积成薄层而制成的。使用的其他子工艺有热喷涂、喷丸强化和机加工。只有微铸造和加工子过程将使用提出的方法进行研究。实验的统计设计将用于创建粗略的过程模型，以识别重要的过程变量及其之间的关系。对于目前尚未很好理解的子过程，将根据子过程的底层物理原理开发模型。不同复杂程度和详细程度的代理模型也将从详细模型中抽象出来。所开发的方法对于研究形状沉积过程特别有用，这是一个快速成型过程。更传统的程序也将受益于这种方法。