High Temperature Ultrasound Transducers

该项目的目的是设计、建造、测试和演示一种原型超声换能器，可用于200至450°C温度范围内的结构健康监测、流量测量和测距应用。核能、石油和天然气、工业控制和航空航天工业都需要这样的设备。由于目前可用的压电元件不能在250°C以上工作，原型将基于公司最近开发的高温压电陶瓷。该项目确定声匹配和阻尼层，兼容的压电陶瓷和拟议的应用，可以承受的温度范围内的操作和willidentify技术，使强大的电气连接到有源元件。该原型将在结构健康监测和范围内的兴趣温度范围内findingapplications的背景下进行测试。

The aim of the project is to design, build, test and demonstrate a prototype ultrasoundtransducer that can be used in structural health monitoring, flow measurement and rangefindingapplications in the temperature range 200 to 450°C. Such devices are required by thenuclear, oil & gas, industrial controls and aerospace industries. As currently availablepiezoelectric elements cannot operate beyond 250°C, the prototype will be based on a recentlydeveloped high temperature piezoelectric ceramic proprietary to the company. The projectwill identify acoustic matching and damping layers, compatible with the piezoelectric ceramicand the proposed applications, that can withstand the temperature range of operation and willidentify techniques for making robust electrical connections to the active element. Theprototype will be tested in the context of structural health monitoring and range-findingapplications within the temperature range of interest.