Models for the Performance of Layered Thermal Barrier Systems

层状热障系统的性能模型摘要柱状多孔氧化锆热障系统将用于开发一个通用的模拟器，可用于预测的热机械演化和性能的高度非线性多层。微尺度表征工具将确定关键现象，指导模型的构建，并为分层方法提供基准。方法范围从第一原理方案的现象学连续力学将利用与长度尺度的联系，并适用于其他材料和系统将被证明。更广泛的影响将包括更好地了解热障系统，开发更好的热保护产品，提高燃气涡轮机发动机的性能和效率。这将为在高于当前温度下改进热障系统的设计、性能和可靠性开辟道路。研究生，本科生和高中生将获得在一个重要的跨学科领域，包括机械工程和材料科学的研究经验。

Models for the Performance of Layered Thermal Barrier SystemsAbstract Thermal barrier systems of columnar porous zirconia will be used for developing a general simulator that can be utilized to predict the thermomechanical evolution and performance of highly nonlinear multilayers. Microscale characterization tools will identify key phenomena, guide construction of models and provide benchmarks for hierarchical approaches. Methods ranging from first principles schemes to phenomenological continuum mechanics will be utilized with length-scale linkages, and applicability to other materials and systems will be demonstrated. The broader impacts will include a better understanding of thermal barrier systems, the development of better products for thermal protection and improved performance and efficiency of gas turbine engines. This will open avenues for improved design, performance and reliability for thermal barrier systems at higher than current temperatures. A graduate student, undergraduates and high school students will gain experience in research in an important interdisciplinary area encompassing mechanical engineering and materials science.