The longitudinal non-uniformities in mass and stiffness distributions of railway vehicle carbodies, caused by doors, windows, and equipment compartments, significantly affect elastic vibrations and ride comfort. This paper establishes a vertical elastic vibration model based on the Euler–Bernoulli beam theory for varia...
Under time-varying operating conditions, signals generated by mechanical equipment usually exhibit strong non-stationarity, frequency-modulation and amplitude-modulation (FM-AM), and contamination by background noise. These characteristics pose three main challenges for time-frequency analysis (TFA): the instantaneou...
Zhi-Feng Hu, Hao Zhang, Bing-Yan Chen et al.· Measurement science and tech...· 0 citations
Transient repetitive impulses are a typical feature of localized damage to rolling element bearings. Enhancing the damage-induced impulse components hidden in collected vibration signals is an important issue for local defect recognition in bearings. Blind deconvolution (BD) is a typical approach for enhancing bearing...
Yao Cheng, Bingyan Chen, Ning Zhou et al.· Structural Health Monitoring· 1 citation
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