Vibration-Based Condition Monitoring: Industrial, Aerospace and Automotive Applications

Enhancing Machine Performance through Vibration Analysis

Abstract

Vibration analysis isby far the most prevalent method for machine condition monitoring because ithas a number of advantages compared with the other methods. It reactsimmediately to change and can therefore be used for permanent as well asintermittent monitoring. With oil analysis for example, several days oftenelapse between the collection of samples and their analysis, although someonline systems do exist. Also in comparison with oil analysis, vibrationanalysis is more likely to point to the actual faulty component, as manybearings, for example, will contain metals with the same chemical composition,whereas only the faulty one will exhibit increased vibration. Most importantly,many powerful signal processing techniques can be applied to vibration signalsto extract even very weak fault indications from noise and other maskingsignals. Most of this concerned with these issues.