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伤评估的高温压电传感器。 除了开发几种有前途的高温压电材料外，拟议的工作还包括测量有前途的压电材料的特性（介电常数和压电系数），并测试压电材料作为高温换能器。 高温压电材料和相关传感器的发展将提供比过去依赖于固定周期或时间间隔的实践更有效和经济的涡轮机发动机部件的实际损坏的诊断。 因此，所提出的技术将对航空航天工业产生重大影响，在航空航天工业中，需要定期检查涡轮机发动机硬件以使发动机具有飞行价值。该技术还可用于高科技材料制造中的质量控制（例如：复合结构中的层压）。

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).