Research on Aging State Detection Method of Rubber O-ring Sealing Structure

Abstract The rubber seal structure is used extensively in mechanical devices, long-term use may bring major safety hazards and economic losses. In order to ensure the healthy operation of machinery equipment, it necessary test aging condition sealing nondestructive online. address problem unsteady vibration signals, a complex nonstationary signal degraded into sum multiple product functions by means global local mean decomposition, then energy features these PF components are extracted, first three with largest eigenvalues selected form sensitive feature vector set. Overall, results search data show that proposed method can efficiently extract from large set original features, be set, which provide effective information for detection state Rubber O-ring Sealing Structure (ROSS) next step.