SBIR Phase II: Residual Stress and Part Distortion Prediction in Machined Workpiece Surfaces

SBIR 第二阶段：机加工工件表面的残余应力和零件变形预测

• 批准号: 0237958
• 负责人: Troy Marusich
• 金额: $ 50万
• 依托单位: THIRD WAVE SYSTEMS, INC.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-02-01 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0237958&HistoricalAwards=false
• 关键词: SBIR; Phase; II; Residual; Stress

This Small Business Innovation Research (SBIR) Phase II project will develop and validate the predictive capability industry needs to dramatically improve machined workpiece quality by controlling machining induced stresses while simultaneously reducing distortion in aerospace and automotive parts. The objective for Phase II will be to continue the development and verification of analysis tools for predicting residual stress and part distortion. The goal is to supply industry with a validated analytical tool to easily and economically predict and prevent part distortion-reducing costs due to testing trials, part scrap, and time-to-market, increasing product quality and competitiveness.The commercial and broader impacts of this technology will be provide industry with the ability to predict and prevent part distortion due to machining induced residual stress. Current techniques, which rely upon testing, and experience are not sufficient technically nor are they cost effective. Aerospace parts (large, monolithic, thin-walled, and expensive) and critical automotive powertrain applications, which demand flat surfaces to maintain fuel efficiency, component life, and lower emissions, are typical examples. A significant impact will be to manufacturing costs, lower scrap material, higher productivity, lower time-to-market, and increased product quality and performance.

这个小型企业创新研究（SBIR）二期项目将开发和验证工业所需的预测能力，通过控制加工引起的应力，同时减少航空航天和汽车零部件的变形，显著提高加工工件质量。第二阶段的目标是继续开发和验证用于预测残余应力和零件变形的分析工具。我们的目标是为行业提供一种经过验证的分析工具，可以轻松、经济地预测和防止零件变形，从而降低因测试试验、零件报废和上市时间而导致的成本，提高产品质量和竞争力。该技术的商业和更广泛的影响将为工业提供预测和防止由于加工引起的残余应力引起的零件变形的能力。目前依靠测试和经验的技术在技术上是不够的，也不具有成本效益。航空航天部件（大型、单片、薄壁、昂贵）和关键的汽车动力总成应用都需要平坦的表面，以保持燃油效率、部件寿命和低排放，这是典型的例子。一个显著的影响将是制造成本，更低的废料，更高的生产率，更短的上市时间，并提高产品质量和性能。