Application Of Vibration Analysis On Fault Diagnosis Of Rotating Machinery

The fault of rotating machinery is complex in industrial spots. Because of non-stationary signal, diversity, multi-faults, uncertainly between symptom and fault, fault do not correspond to the symptom exactly. With the complicity of the fault, It is effective to combine experience and professional knowledge in practical fault diagnosis. The application problem in vibration diagnosis analyzed in this paper based on the vibration and diagnosis theory. With case analysis, the diagnosis technique of local unbalance, coupling damage, pedestal looseness concluded. The variety of vibration is an important fault symptom. Vibration variety, for example, sudden accretion, increase and then decrease, indicate fault is growing, examine or regularly monitor is obligatory. Vibration acceleration is a important parameter in rolling bear diagnosis, in despite of the international standard is based on velocity.