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MECHANICAL WAVEGUIDE VIBRATION AND TEMPERATURE SENSORS FOR MONITORING GAS TURBINE ENGINES

机译：机械波形振动和温度传感器，用于监测燃气轮机发动机

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摘要

Solid, mechanical waveguide sensors have been demonstrated for health-monitoring in the gas turbine environment. These sensors can be made of any material which conducts ultrasound; examples made of stainless steel, high-temperature aerospace alloys, and ceramics are presented here. Mechanical waveguides can be configured to measure temperature, pressure, heat flux, strain, and vibration. This paper presents results for two different waveguide-based sensors - a vibration sensor, and a temperature sensor. The waveguide vibration sensor was demonstrated for monitoring main-shaft bearings in a Rolls-Royce 501KB5+ industrial turbine engine. A high-temperature version was demonstrated in the exhaust of this engine for monitoring the #4 bearing at the turbine outlet; this requires survivability in the approximately 760℃ (1400℉) exhaust stream. Additionally, a waveguide temperature sensor was demonstrated for turbine inlet temperature measurement in the same industrial turbine engine. This sensor provides accurate temperature measurement in combustion gases at over 1100℃ (2000℉).
机译：固态机械波导传感器已被证明可在燃气轮机环境中进行健康监测。这些传感器可以由传导超声波的任何材料制成。本文介绍了由不锈钢，高温航空合金和陶瓷制成的示例。机械波导可以配置为测量温度，压力，热通量，应变和振动。本文介绍了两种基于波导的传感器的结果-振动传感器和温度传感器。波导振动传感器已被证明可监测劳斯莱斯501KB5 +工业涡轮发动机中的主轴轴承。在该发动机的排气装置中演示了高温版本，用于监控涡轮出口处的＃4轴承。这就要求在大约760℃（1400℉）的排气流中具有生存能力。此外，在同一台工业涡轮发动机中，还演示了用于测量涡轮进气温度的波导管温度传感器。该传感器可在1100℃（2000℉）以上的燃烧气体中提供精确的温度测量。

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