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GMPSO-VMD Algorithm and Its Application to Rolling Bearing Fault Feature Extraction

open access: yesSensors, 2020
The vibration signal of an early rolling bearing is nonstationary and nonlinear, and the fault signal is weak and difficult to extract. To address this problem, this paper proposes a genetic mutation particle swarm optimization variational mode ...
Jiakai Ding   +3 more
doaj   +3 more sources

RELATIONSHIP BETWEEN ROLLING AND SLIP RESISTANCE IN ROLLING BEARINGS

open access: yesNauka ta progres transportu, 2016
Purpose. About one of the causes of slip rolling is known from the second half of the 19th century, it was believed that the slip resistance appears at the place of contact due to different speeds on the arc of contact.
L. M. Bondarenko   +4 more
doaj   +5 more sources

Achieving High Plasticity and High Toughness of Low-Carbon Low-Alloy Steel through Intercritical Heat Treatment

open access: yesMetals, 2023
Medium manganese steel has excellent comprehensive properties due to the TRIP effect of retained austenite, but its welding performance is unsatisfactory for its high alloy content.
Long Huang   +3 more
doaj   +1 more source

Dynamic Characteristics of a Misaligned Rigid Rotor System with Flexible Supports

open access: yesShock and Vibration, 2021
A misaligned rigid rotor system with flexible supports differing from the traditional flexible rotor system, which refers to its practical rotating center line determined by supports offset from the theoretical one, often suffers support structure damage
Meiling Wang   +4 more
doaj   +1 more source

Structural design and magnetic field analysis on magnetic fluid lubricated bearings

open access: yesThe Journal of Engineering, 2022
A structural model of a bearing is proposed based on a general standard bearing structure and magneto‐fluidic lubrication, and the magnetic field of the bearing lubrication gap is analyzed under the action of an applied magnetic source. Results show that
Ao Wang, Jiabao Pan, Jin Ye, Huaibiao Wu
doaj   +1 more source

Enhancement and extraction of periodic transient based on hybrid intelligent fusion algorithm and its application in rolling bearing fault detection

open access: yesAdvances in Mechanical Engineering, 2022
Weak fault detection of rolling bearing presents difficult, because the periodic transient signature produced via localized incipient damage is easily submerged by various interference components and background noise.
Lu Yan, Du Juan, Ding En-Jie, Liu Ke
doaj   +1 more source

Vibration characteristics analysis of rolling bearing rotor system considering radial clearance and outer raceway defect

open access: yesAdvances in Mechanical Engineering, 2023
Because of the radial clearance, the radial stiffness of rolling bearing will show obvious time-varying characteristics, which may cause a certain vibration.
Runlin Chen   +5 more
doaj   +1 more source

Adaptive Multiscale Weighted Permutation Entropy for Rolling Bearing Fault Diagnosis [PDF]

open access: yes, 2020
© 2020 The Author(s). This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see https://creativecommons.org/licenses/by/4.0/.Bearing vibration signals contain non-linear and non-stationary features due to ...
Huo, Zhiqiang   +3 more
core   +2 more sources

Intelligent diagnosis of rolling bearing compound faults based on device state dictionary set sparse decomposition feature extraction–hidden Markov model

open access: yesAdvances in Mechanical Engineering, 2020
Identification of rolling bearing fault patterns, especially for the compound faults, has attracted notable attention and is still a challenge in fault diagnosis.
HongChao Wang, WenLiao Du
doaj   +1 more source

Performance Degradation Evaluation of Rolling Bearing based on Improved Fuzzy Entropy and Grey Relation

open access: yesJixie chuandong, 2022
In light of low sensitivity of fuzzy entropy in extracting degraded features of rolling bearing,an improved fuzzy entropy based on the sigmoid-like function is proposed.
Li Cheng   +3 more
doaj  

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