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

小企业创新研究（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，建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）以及测试压电材料作为高温换能器的性能。高温压电材料及其相关传感器的发展，将比以往依靠固定周期或时间间隔的方法更有效、更经济地诊断涡轮发动机部件的实际损伤。因此，拟议的技术将对航空航天业产生重大影响，因为航空航天业需要定期检查涡轮发动机硬件，以使发动机符合飞行要求。该技术还可用于制造高科技材料的质量控制（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).