Detection of ski slopes in vibration spectrums

The most important parameter that must be considered in vibration analysis is the recognition of patterns of faulty data. Ski slopes are commonly present in vibration spectrums when the transducer is not properly mounted. The primary objective of this paper is to study the effect of ski slopes on the overall value of vibration level reading. The test was carried out in two different conditions of mountingproperly mounted and with gap of 2 mm. The properly mounted transducer had a good vibration spectrum with a smooth and fl at pattern of noise floor. The transducer with gap of 2 mm had a faulty pattern of vibration spectrum. A ski slope was present, while the noise floor had a rough pattern. Observation of the overall vibration levels showed that the vibration level of the 2 mm gap mounted transducer had increased as compared to the properly mounted transducer. This study demonstrated that loose mounting of transducers can contribute to the presence of ski slopes in vibration spectrums, resulting in increase of overall value of vibration level reading