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首页> 外文会议>Sensors and systems for reliability, safety and affordability >WAVEGUIDE VIBRATION SENSORS FOR AEROSPACE HEALTH MONITORING
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WAVEGUIDE VIBRATION SENSORS FOR AEROSPACE HEALTH MONITORING

机译：用于航空航天健康监测的WAVEGUIDE振动传感器

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摘要

Mechanical waveguides have been demonstrated for monitoring turbine engine main shaft bearings. As case-mounted accelerometers are so distant from the bearings, low-level vibration signatures are typically overwhelmed by noise and other vibration sources. Mechanical waveguides are rugged metallic wires which can be mounted inside the engine near the bearing and routed to the case where the piezoelectric element can be placed in a cool, serviceable location. This provides superior bearing defect vibration signal-to-noise to case-mounted accelerometers while maintaining serviceability. To date, the waveguide vibration sensor has been demonstrated on two engines with thrust bearings with seeded defects: a T63 (military version of the Allison/Rolls-Royce 250-C18) and a Rolls-Royce 501-KB5+ (the industrial version of the military T56). While the waveguide vibration sensor has been demonstrated for monitoring turbine engine main shaft bearings, it is a useful tool for vibration monitoring any mechanical component in a harsh or difficult-to-access environment.
机译：机械波导已被证明可用于监测涡轮发动机主轴轴承。由于安装在外壳上的加速度计离轴承太远，因此低水平的振动信号通常会被噪声和其他振动源所淹没。机械波导管是坚固的金属线，可将其安装在发动机内部靠近轴承的位置，并路由至可将压电元件放置在凉爽且易于使用的位置的情况。这为安装在外壳上的加速度计提供了卓越的轴承缺陷振动信噪比，同时保持了可维修性。迄今为止，波导振动传感器已经在带有推力轴承且带有缺陷缺陷的两台发动机上进行了演示：T63（Allison / Rolls-Royce 250-C18的军用版本）和Rolls-Royce 501-KB5 +（工业版）军事T56）。虽然已经证明了波导振动传感器可以监测涡轮发动机主轴轴承，但是它是在恶劣或难以接近的环境中振动监测任何机械组件的有用工具。

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