Collaborative Research: US-Germany: Achieving breakthroughs in the mechanics of high temperature ceramic coatings with novel thermal-gradient mechanical fatigue studies

美国-德国合作研究：通过新型热梯度机械疲劳研究在高温陶瓷涂层力学方面取得突破

• 批准号: 1157619
• 负责人: Seetha Raghavan
• 金额: $ 5.24万
• 依托单位: The University of Central Florida Board of Trustees
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-05-01 至 2014-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1157619&HistoricalAwards=false
• 关键词: Collaborative; Research; US; Germany; Achieving

This award catalyzes a synergistic international collaboration with long-term goals to enable breakthroughs in the understanding of degradation and failure mechanisms in high temperature ceramic coatings, under operational environments. Researchers from the University of Central Florida, University of Delaware in the US and DLR Aerospace Center in Germany will collaborate to perform fundamental experiments and simulations with novel geometries and high resolution techniques to quantify the in situ evolution of strain in these coatings under thermal gradient-mechanical fatigue (TGMF) conditions. The catalyzing activities will be jointly conducted by the team, supported with synchrotron studies providing opportunities for graduate and undergraduate students to enrich their research and education with international collaborative activities. The intellectual merit and uniqueness of the research lies in i) the in situ capture of degradation mechanisms within ceramic coatings under operational and real environments; and ii) the combination of powerful and complementary experimental and simulation techniques for high resolution results. The research will benefit from the individual expertise and advances in instrumentation achieved by the US and German collaborators, to integrate high-resolution measurements (UCF) and simulation (UD) with TGMF test capabilities (DLR, Germany). The complex thermo-mechanical environment, often eluded in studies of high temperature coatings, will be established through this work leading to breakthroughs in achieving realistic mechanics models for these materials.The research has far reaching societal benefits in creating a new class of high temperature ceramic coatings for next generation energy and propulsion needs. The educational broader impact of the international collaborative research is achieved through i) an exchange of knowledge of high resolution techniques in experimentation and simulation ii) opportunities for students at the graduate and undergraduate levels to experience collaborative research in highly advanced facilities focused on each expertise, iii) a global engineering and research perspective with planned activities, providing students with the capabilities for future international collaborative success. The international experience will be extended to students at individual institutions through presentations led by the participants.

该奖项促进了具有长期目标的协同国际合作，以实现对高温陶瓷涂层在操作环境下的降解和失效机制的理解的突破。来自中央佛罗里达大学、美国特拉华州大学和德国DLR航空航天中心的研究人员将合作进行基础实验和模拟，采用新的几何形状和高分辨率技术，量化热梯度机械疲劳（TGMF）条件下这些涂层中应变的原位演变。催化活动将由该团队联合进行，并得到同步加速器研究的支持，为研究生和本科生提供机会，通过国际合作活动丰富他们的研究和教育。该研究的智力价值和独特性在于：i）在操作和真实的环境下原位捕获陶瓷涂层内的降解机制;以及ii）将强大和互补的实验和模拟技术相结合，以获得高分辨率的结果。该研究将受益于美国和德国合作者在仪器方面的专业知识和进步，将高分辨率测量（UCF）和模拟（UD）与TGMF测试能力（DLR，德国）相结合。高温涂层研究中经常回避的复杂热-机械环境将通过这项工作建立，从而在实现这些材料的真实力学模型方面取得突破。这项研究在创造新一代能源和推进需求的新型高温陶瓷涂层方面具有深远的社会效益。国际合作研究的教育更广泛的影响是通过以下方式实现的：i）在实验和模拟中交流高分辨率技术的知识ii）研究生和本科生有机会在高度先进的设施中体验合作研究，专注于每项专业知识，iii）全球工程和研究视角，计划活动，为学生提供未来国际合作成功的能力。国际经验将通过参与者领导的演讲扩展到各个机构的学生。