CAREER: A Hybrid High Strain Rate Forming Process - Laser Dynamic Forming for Micro- and Meso- Scale 3D Shapes

职业：混合高应变率成形工艺 - 用于微米级和细观级 3D 形状的激光动态成形

• 批准号: 0809463
• 负责人: Gary Cheng
• 金额: $ 33.58万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-27 至 2012-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0809463&HistoricalAwards=false
• 关键词: CAREER; Hybrid; Strain; Rate; Forming

This Faculty Early Career Development (CAREER) grant provides funding to develop a unique forming process laser dynamic forming, to form meso- and micro-scale 3D structures. This process combines the advantages of metal forming and laser shock peening to generate 3D shaping in various materials, especially brittle and hard to form materials. The project will discover the fundamental process mechanism of laser dynamic forming, and control the process accurately. Experiments will be designed to study size effects, formability, temperature effects, wrinkling and springback of the forming process. A multiscale simulation approach will be used to simulate the forming process. Analytical models will be built to predict fatigue life and fracture toughness after forming, and validated via experiments. An inverse multiobjective optimization will be developed to design the forming process desired geometry change, and mechanical properties. The education goal of the project is to integrate research activities with educational efforts, such as development of a Laser Processing Education Lab; incorporation of nontraditional manufacturing education into manufacturing courses; and outreach activities for high school students and under-represented minorities through new teaching modules and summer programs with research projects. The successful completion of this work will make a revolutionary improvement to the process of micro- and meso- three-dimensional structures, and have a major impact on manufacturing industry. This work will fundamentally advance the state of knowledge of laser processing through a novel hybrid forming process with improved mechanical properties of product. This project will increase the presence of non-traditional manufacturing techniques in education by establishing a strong research integrated education activities. Native American high school students will be inspired to pursue science and engineering careers. Ethnic minorities, women, and person of disability will be encouraged to participate in this project to pique their interests in science and engineering.

该学院早期职业发展（CAREER）拨款为开发独特的成形工艺激光动态成形提供资金，以形成中尺度和微观尺度的3D结构。 该工艺结合了金属成形和激光冲击强化的优点，可在各种材料中生成3D成形，特别是脆性和难以成形的材料。本课题将揭示激光动态成形的基本过程机理，并对激光动态成形过程进行精确控制。 将设计实验来研究成形过程的尺寸效应、成形性、温度效应、弯曲和回弹。 多尺度模拟方法将被用来模拟成形过程。 将建立分析模型来预测成形后的疲劳寿命和断裂韧性，并通过实验进行验证。 将开发一个逆多目标优化设计成形工艺所需的几何形状变化，和机械性能。 该项目的教育目标是将研究活动与教育工作相结合，例如开发激光加工教育实验室;将非传统制造教育纳入制造课程;通过新的教学模块和暑期项目与研究项目开展高中生和代表性不足的少数民族的外联活动。 这项工作的成功完成将对微细观三维结构的工艺产生革命性的改进，对制造业产生重大影响。 这项工作将从根本上推进知识的状态，通过一种新的混合成形工艺，提高产品的机械性能的激光加工。 该项目将通过建立强有力的研究综合教育活动，增加非传统制造技术在教育中的存在。美国原住民高中学生将受到启发，追求科学和工程事业。 鼓励少数民族、妇女和残疾人参与该项目，以激发他们对科学和工程的兴趣。