Hydraulic pipeline is widely used in various important engineering scenarios and play a key role in ensuring the safe and stable operation of the system.In the service state,the hydraulic pipeline will produce complex fluid-structure interaction vibration under the dual influence of external mechanical load and internal high-pressure fluid,and the fatigue failure mechanism is very complex,which also brings challenge to the fault diagnosis and condition monitoring of the hydraulic pipeline.Through literature overview,the current research on fatigue life prediction and fault diagnosis method of hydraulic pipeline was reviewed,and the advantages and disadvantages of different research methods were compared,so as to provide reference for future research work.
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