SGER/Collaborative Research: Investigating Probability Laws in the Design of Manufacturing Processes for Safety Critical Parts

SGER/合作研究：研究安全关键零件制造工艺设计中的概率定律

• 批准号: 0628004
• 负责人: Martin Wortman
• 金额: --
• 依托单位: Texas A&M Engineering Experiment Station
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-07-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0628004&HistoricalAwards=false
• 关键词: SGER; Collaborative; Research; Investigating; Probability

This Small Grant for Exploratory Research (SGER) award provides funding for an exploration of risk-based process design in the forging of safety critical parts. This exploration will address: (1) development of Monte Carlo approaches suitable for capturing the probability law on the location and severity of point defects in deformation processing, (2) development analytical foundations necessary to model process risk, and (3) exploration of computational models suitable for optimizing process design in the presence of risk. Particular emphasis will be given to estimating and measuring the risk distribution for specific manufacturing process alternatives. Point-defect density functional transformations under net shape forging will be characterized to capture risk associated with specific design alternative, and the design valuations and the associated net shaping risk will be modeled for process optimization.If successful, the results of this research will lead to improvements in the design of forging processes in particular and manufacturing operations in general. It is anticipated that these process improvements could make net shaping technology suitable for the manufacture of airframe structural parts, helicopter rotor hubs, aeroengine blades, turbine rotors, automotive axles etc., leading to dramatic manufacturing cost reductions and improved performance risk profiles. This work will also contribute to risk based finite element computational tools and methodologies for the engineering of optimal metal forming operations.

这项探索性研究（SGER）小额赠款为安全关键部件锻造中基于风险的工艺设计探索提供资金。这一探索将涉及：(1)开发适用于捕获变形加工中点缺陷位置和严重程度的概率律的蒙特卡罗方法，(2)开发建模过程风险所需的分析基础，以及(3)探索适用于在存在风险的情况下优化过程设计的计算模型。特别强调的是评估和测量特定制造工艺替代方案的风险分布。将对净形锻造下的点缺陷密度函数转换进行表征，以捕获与特定设计方案相关的风险，并对设计估值和相关净形风险进行建模，以进行工艺优化。如果成功，这项研究的结果将导致改进锻造工艺的设计，特别是制造操作。预计这些工艺改进可以使净成形技术适用于机身结构部件、直升机旋翼轮毂、航空发动机叶片、涡轮转子、汽车轴等的制造，从而大幅降低制造成本并改善性能风险概况。这项工作也将有助于基于风险的有限元计算工具和方法，用于优化金属成形操作的工程。