EAGER/Collaborative Research: Electromagnetic Pulse Induced Cutting (EPIC) of Metallic Components

EAGER/协作研究：金属部件的电磁脉冲感应切割 (EPIC)

基本信息

批准号：
1103120
负责人：
David Bourell
金额：
$ 5万
依托单位：
University of Texas at Austin
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2011
资助国家：
美国
起止时间：
2011-02-01 至 2012-01-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1103120&HistoricalAwards=false
关键词：
EAGER Collaborative Research Electromagnetic Pulse

项目摘要

The research objective of this Early Concept Grant for Exploratory Research (EAGER) award is to demonstrate proof-of-concept of a novel manufacturing process for cutting thin sheet and plates in a tool-less, freeformed fashion. The process, termed Electromagnetic Pulse Induced Cutting, is based on the controlled advance of a fine crack under combined electromagnetic and mechanical loading. The approach will be to utilize electromagnetic forces associated with a series of electric pulses to advance the crack front while using a mechanical load to define the crack direction. In effect, the goal is to move a crack in a highly controlled manner in virtually any direction on a sheet or plate. Conceptually, the process is akin to a microsized, tool-less, electromagnetic jigsaw with a kerf measured in microns. As part of the proposed research, the principles of electromagnetic Lorentz force generation, localized heating at the crack-tip due to current-crowding, and mixed mode fracture mechanics will be combined to derive the conditions required to advance and turn the crack using a simple experimental prototype.If successful, the benefit to society of the research will include the emergence of a new manufacturing process for precision-cutting of mesoscale thin sheets and foils of brittle, hard-to-process materials. As such, the process has the potential to serve as a new enabling technology for the nation?s manufacturing base. In addition, this project will integrate research and education by advancing discovery and understanding by graduate students at two American universities.

探索性研究奖（Eager）奖的这一早期概念赠款的研究目标是证明以无工具，自由形式的方式切割薄纸和板块的新型制造过程的概念证明。该过程称为电磁脉冲诱导的切割，是基于组合电磁和机械载荷下的细裂纹的受控进展。该方法将是利用与一系列电脉冲相关的电磁力，以使用机械载荷来定义裂纹方向，以推进裂纹前部。实际上，目的是以高度控制的方式沿板或板上的任何方向移动裂缝。从概念上讲，该过程类似于微型，无工具的电磁拼图，并用微米测量的KERF。作为拟议研究的一部分，将结合电磁洛伦茨力产生的原理，由于流动而导致的裂纹尖端局部加热以及混合模式断裂力学的原理，以获取使用简单的实验原型的裂纹所需的条件。难以处理的材料。因此，该过程有潜力作为国家制造基地的新促成技术。此外，该项目将通过促进两所美国大学的研究生的发现和理解来整合研究和教育。