Shock and Vibration / 2019 / Article / Fig 5

Research Article

Train Wheelset Bearing Multifault Impulsive Component Separation Using Hierarchical Shift-Invariant Dictionary Learning

Figure 5

Simulation signal with a SNR of −3 dB: (a) time-domain waveform; (b) Fourier spectrum of (a); (c) Hilbert envelope spectrum of (b).

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19. Sign up here as a reviewer to help fast-track new submissions.