Collaborative Research: Electromagnetic Peening Assisted Laser Micromachining (EPALM) - A Hybrid Micromachining Process with Enhanced Mechanical Properties

合作研究：电磁喷丸辅助激光微加工 (EPALM) - 一种具有增强机械性能的混合微加工工艺

基本信息

批准号：
1000226
负责人：
Gary Cheng
金额：
$ 17万
依托单位：
Purdue University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2010
资助国家：
美国
起止时间：
2010-09-15 至 2014-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1000226&HistoricalAwards=false
关键词：
Collaborative Research Electromagnetic Peening Assisted

项目摘要

The goal of this collaborative research project is to investigate a novel electromagnetic peening-assisted laser micromachining process. The research objectives of the project are to understand responses of a workpiece under the simultaneous action of laser beam radiation and compressive forces generated by electromagnetic induction during machining, and to test the hypothesis that, during the electromagnetic peening-assisted laser micromachining process, the application of electromagnetic forces can generate a beneficial peening effect, enhancing the mechanical properties of the workpiece. A physics-based model will be developed based on continuum mechanics and Maxwell's electromagnetic field theory, which can predict and help understand the process mechanism. The model will be tested by comparing with experiments that include both in-situ observations of the electromagnetic peening-assisted laser micromachining process and the characterization of the processed workpieces. The machining rate, microstructures and residual stresses will be characterized using an optical surface profilometer, scanning and transmission electron microscopes and X-ray diffraction respectively. The fatigue properties of machined samples will also be tested. If successful, this research will provide an improved understanding of material response under laser radiation and electromechanical forces. The electromagnetic peening effect is expected to enhance the mechanical properties of laser-machined workpieces, with a potential to improve product quality. This technology is environmentally friendly as it does not involve harmful chemicals. Better product quality and longer lifetime decrease the need for re-manufacturing and hence imply less energy and material consumption and less waste generation.

该协作研究项目的目的是研究一种新型的电磁固定辅助激光微机加工过程。该项目的研究目的是在加工过程中电磁诱导产生的激光束辐射和压缩力的同时作用下，了解工件的响应，并检验以下假设：在电磁激光辅助激光辅助的激光微机械过程中，具有有益的pertorice the Ornocientic the Offication the Offication the Offication the Offication the Offication the Offication the Offication the Offication the Offication效应。基于物理学的模型将基于连续力学和麦克斯韦的电磁场理论开发，该理论可以预测和帮助理解过程机制。该模型将通过与包括对电磁体辅助激光微机加工过程的现场观察以及处理后工件的表征进行比较来测试该模型。将分别使用光学表面探针计，扫描和透射电子显微镜和X射线衍射来表征加工速率，微结构和残余应力。也将测试加工样品的疲劳特性。如果成功，这项研究将提供对激光辐射和机电力下材料反应的改进理解。预计电磁镀金效果将增强激光器加工工件的机械性能，并有可能提高产品质量。这项技术对环境友好，因为它不涉及有害化学物质。更好的产品质量和更长的寿命可以减少重新制造的需求，从而减少能源和材料消耗，并减少产生废物。