The electrostatic detection of gas path debris has been proposed in literature as a tool to monitor mechanical component faults along the combustion gas path of turbo-machines. In this paper we discuss the general theoretical characterization of a debris detection monitoring system based on electrostatic sensors and charge amplifiers. We first provide the analytical expression of the time-varying charge induced by the moving debris on the sensor surface. After introducing a simplified electric model of the charge amplifier, we discuss the effects of the amplifier bandwidth on the shape of the output voltage signal. Theoretical results have been validated with experiments.
Addabbo, T., Fort, A., Garbin, R., Mugnaini, M., Rocchi, S., Vignoli, V. (2015). Theoretical characterization of a gas path debris detection monitoring system based on electrostatic sensors and charge amplifiers. MEASUREMENT, 64, 138-146 [10.1016/j.measurement.2014.12.003].
Theoretical characterization of a gas path debris detection monitoring system based on electrostatic sensors and charge amplifiers
Addabbo, T.;Fort, A.;Mugnaini, M.;Rocchi, S.;Vignoli, V.
2015-01-01
Abstract
The electrostatic detection of gas path debris has been proposed in literature as a tool to monitor mechanical component faults along the combustion gas path of turbo-machines. In this paper we discuss the general theoretical characterization of a debris detection monitoring system based on electrostatic sensors and charge amplifiers. We first provide the analytical expression of the time-varying charge induced by the moving debris on the sensor surface. After introducing a simplified electric model of the charge amplifier, we discuss the effects of the amplifier bandwidth on the shape of the output voltage signal. Theoretical results have been validated with experiments.File | Dimensione | Formato | |
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https://hdl.handle.net/11365/981544