Mechanics Guided Design of a Hybrid Laser/Water-Jet (LWJ) Manufacturing Process

混合激光/水射流 (LWJ) 制造工艺的力学引导设计

• 批准号: 0522788
• 负责人: Pranav Shrotriya
• 金额: --
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-07-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0522788&HistoricalAwards=false
• 关键词: Mechanics; Guided; Design; Hybrid; Laser

The goal of this research is to investigate the thermal shock-induced fracture mode of material removal in a hybrid laser/water-jet manufacturing process for brittle materials and to develop educational and outreach activities that focus on hybrid non-traditional machining processes and enhance the local manufacturing infrastructure. In this project, a synergistic combination of low-power laser and low-pressure water-jet will be utilized to accomplish precise material removal of concrete, granite and other brittle materials by thermal shock-induced fracture mechanism rather than energy-intensive erosive wear or melting and evaporation mechanisms. A thermo-mechanical model coupled with laboratory scale machining experiments will be used to probe the design parametric space and properties associated with the hybrid manufacturing process.If successful, the research will overcome the current limitations of the existing diamond saw, laser, and water-jet methods such as energy inefficiency, rapid tool wear, low-quality surface treatment, hazardous noise, significant waste debris, and mechanical stress-induction, with the resulting societal benefits of energy savings, economics and environment. This research will contribute to the development of a workforce trained in advanced manufacturing technology by exposing graduate and undergraduate students to scientific and technological underpinnings such as interactions of multiple energy sources, science of fluid flow, mechanical abrasion, heating, and dissolution. Incorporating the results of this research in the required manufacturing courses will enhance the Mechanical Engineering curriculum at Iowa State University. Collaborative partnership with local manufacturer will facilitate broad dissemination of the results to the industrial sector.

本研究的目标是调查的热冲击诱导断裂模式的材料去除在混合激光/水射流制造过程中的脆性材料，并制定教育和推广活动，重点是混合非传统加工工艺和提高当地的制造基础设施。在本项目中，将利用低功率激光和低压水射流的协同组合，通过热冲击诱导的断裂机制而不是能量密集的侵蚀磨损或熔化和蒸发机制来实现混凝土、花岗岩和其他脆性材料的精确材料去除。热-机械模型结合实验室规模的加工实验将用于探索与混合制造工艺相关的设计参数空间和属性。如果成功，该研究将克服现有金刚石锯，激光和水射流方法的局限性，如能源效率低，工具快速磨损，低质量的表面处理，危险的噪音，大量的废物碎片，和机械应力诱导，从而带来节能、经济和环境方面的社会效益。 这项研究将有助于培养受过先进制造技术培训的劳动力，使研究生和本科生接触科学和技术基础，如多种能源的相互作用，流体流动科学，机械磨损，加热和溶解。在所需的制造业课程中阐明本研究的结果将增强爱荷华州州立大学的机械工程课程。与当地制造商的合作伙伴关系将有助于向工业部门广泛传播成果。