Industry Internship: Combustion-Assisted Laser Cutting of Difficult-to-Machine Materials

行业实习：难加工材料的燃烧辅助激光切割

• 批准号: 9015658
• 负责人: Palaniappa Molian
• 金额: $ 1.51万
• 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: 1990
• 资助国家: 美国
• 起止时间: 1990-07-01 至 1991-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9015658&HistoricalAwards=false
• 关键词: Industry; Internship; Combustion; Assisted; Laser

The research will explore the effects of combustion assist gases and ultraviolet/infrared laser combinations to develop efficient methods of machining materials that are conventionally difficult-to-machine, such as the refractory metals (tungsten and molybdenum), superalloys, and ceramics such as silicon carbide, aluminum nitride, and composites. The specific goals are (1) to study the effects of infrared/ultraviolet combination laser sources, combustion-assist gases, and gas-flow conditions on the cutting process, (2) to conduct experiments on difficult-to-machine materials, to verify experimentally and augment the results of the analytical study, and (3) to recommend methods to improve the effectiveness of laser cutting for thicknesses greater than 5 mm. The specifics that will be addressed include the effect of infrared/ultraviolet laser beams on the absorption of laser energy, the effect of chemical reactions on laser energy absorption, and the influence of combustion on the cutting efficiency.

这项研究将探讨燃烧辅助的效果 气体和紫外/红外激光组合， 加工材料的有效方法， 难加工的，如难熔金属（钨和 钼），超级合金，和陶瓷如碳化硅， 氮化铝和复合材料。 具体目标是：（1）研究 红外/紫外组合激光源，燃烧辅助 气体和气体流动条件对切割过程的影响，（2） 对难加工材料进行实验，以验证 实验性地并增强分析研究的结果，以及 (3)推荐提高激光治疗效果的方法 切割厚度大于5毫米。具体细节将 包括红外/紫外激光束的影响 对激光能量的吸收、化学反应的影响 对激光能量吸收的影响，以及燃烧对激光能量吸收的影响。 切割效率