SBIR Phase I: Micromachined High-Temperature Piezoelectrics for On-Line Damage Assessment in Turbine Engines

小型企业创新研究(SBIR)第一阶段项目将开发用于燃气轮机在线损害评估的高温压电传感器。除了开发几种有前景的高温压电材料外，拟议的工作还包括测量有前景的压电材料的特性(介电常数和压电系数)和测试用作高温换能器的压电材料。高温压电材料和相关传感器的发展将为涡轮发动机部件的实际损伤提供比过去依赖固定周期或时间间隔更有效和经济的诊断。因此，这项拟议的技术将对航空航天行业产生重大影响，在航空航天行业，需要对涡轮发动机硬件进行定期检查，以确定发动机是否适合飞行。这项技术也可用于高技术材料制造的质量控制(例如：复合材料结构中的层压)。

The Small Business Innovation Research (SBIR) Phase I project will develop high temperature piezoelectric sensors for on-line damage assessment in gas turbines. In addition to developing several promising high-temperature piezoelectric materials, the proposed work involves measurement of characteristics (dielectric constants and piezoelectric coefficients) of the promising piezoelectric materials and testing the piezelectric materials to serve as high temperature transducers. The development of high temperature piezoelectric materials and related sensors will provide a more efficient and economic diagnosis of the actual damage of turbine engine components than the past practices of relying on fixed cycles or time-intervals. The proposed technology will, therefore, significantly impact the aerospace industry where periodic inspections of turbine engine hardware are necessary to qualify engines for flight worthiness. This technology can also be used for quality control in manufacturing of high technology materials (ex: lamination in composite structures).