진동신호를 이용한 회전기계의 상태감시를 위한 손상지수 개발 및 대형 원심압축기에 적용 사례

다국어 초록 (Multilingual Abstract)

Many machinery diagnosis methods and strategies utilizing measured vibration signals have been developed greatly over the last a few decades and used as a key element in the area of condition-based maintenance (CBM). Most of these sophisticated diagnosis methods focus on appropriate feature extraction from the measured signals in the time, frequency, and time-frequency domains, and generally require engineers to have specific knowledge of the method. However, it is often the case that field engineers are not well trained to apply these methods appropriately. Instead, they often want to know whether a machine under observation needs a further special inspection or not. In this paper, a few damage indexes are suggested for field engineers to determine easily whether the machinery under evaluation needs a further detailed examination. The proposed indexes are easy to interpret without requiring special knowledge. An example of using these indexes is demonstrated by applying to a large centrifugal compressor.

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