Results 51 to 60 of about 1,983,376 (193)

Effect of heat treatment on compression properties of the 316L diamond structure fabricated through selective laser melting

Journal of Materials Research and Technology, 2023
Designing a triply periodic minimal surface (TPMS) lattice structure is a new method for lightweight. Compared with the previous foam- and strut-based structure, the TPMS lattice structure has the advantages of precise control of mechanical properties ...
Zhonghua Li, Zezhou Kuai, Jiaxin Li, Bin Liu, Miao Zhao, Zhicheng Yang, Fei Liu, PeiKang Bai, Wenjuan Huo   +8 more
doaj   +1 more source

Modulation Sideband Separation Using the Teager–Kaiser Energy Operator for Rotor Fault Diagnostics of Induction Motors

Energies, 2019
Broken rotor bar (BRB) faults are one of the most common faults in induction motors (IM). One or more broken bars can reduce the performance and efficiency of the IM and hence waste the electrical power and decrease the reliability of the whole ...
Haiyang Li, Zuolu Wang, Dong Zhen, Fengshou Gu, Andrew Ball   +4 more
doaj   +1 more source

Distributed Channel Quantization for Two-User Interference Networks

, 2014
We introduce conferencing-based distributed channel quantizers for two-user interference networks where interference signals are treated as noise.
Jafarkhani, Hamid, Koyuncu, Erdem, Liu, Xiaoyi Leo   +2 more
core   +2 more sources

Enhancing Secrecy with Multi-Antenna Transmission in Wireless Ad Hoc Networks

, 2013
We study physical-layer security in wireless ad hoc networks and investigate two types of multi-antenna transmission schemes for providing secrecy enhancements.
McKay, Matthew R., Zhang, Xi, Zhou, Xiangyun   +2 more
core   +2 more sources

Investigation into the tribodynamics of spur gear pairs considering pitch deviations and lubrication

Friction
Pitch deviation, a type of longwave deviation, has been demonstrated to be a significant contributor to noise generation in the drive trains of motor vehicles operating at relatively high speeds. To date, numerous studies have investigated the effects of
Lintao Duan, Hao Zhang, Liming Wang, Wennian Yu, Yimin Shao, Zaigang Chen, Minggang Du, Fengshou Gu, Andrew Ball   +8 more
doaj   +1 more source

Numerical and Experimental Investigation of Temperature Distribution for Oil-Immersed Transformer Winding Based on Dimensionless Least-Squares and Upwind Finite Element Method

IEEE Access, 2019
To accurately analyze the temperature rising and locate the hot-spot of oil-immersed transformer windings, a hybrid method based on the dimensionless least-squares finite element method (DLSFEM) and upwind finite element method (UFEM) is proposed in this
Gang Liu, Zhi Zheng, Xun Ma, Shichang Rong, Weige Wu, Lin Li   +5 more
doaj   +1 more source

Vibration Response of the Planetary Gears with a Float Sun Gear and Influences of the Dynamic Parameters

Shock and Vibration, 2020
Planetary gearboxes are widely used in mechanical transmission systems due to their large transmission ratio and high transmission efficiency. In a planetary gearbox, the sun gear is usually set to float to balance the sharing of loads among planet gears.
Yinghui Liu, Dong Zhen, Huibo Zhang, Hao Zhang, Zhanqun Shi, Fengshou Gu   +5 more
doaj   +1 more source

A Hierarchical Attention-Guided Data–Knowledge Fusion Network for Few-Shot Gearboxes’ Fault Diagnosis

Machines
To address the limited generalization capability of data-driven fault diagnosis models caused by scarce gearbox fault samples in engineering practice, this paper proposes a hierarchical attention-guided data–knowledge dual-driven fusion network for ...
Xin Feng, Tianci Zhang
doaj   +1 more source

Simulation analysis of the magnetic and thermal performance of large-capacity medium-frequency transformers and improvement in shielding structure

Zhejiang dianli
Large-capacity medium-frequency transformers （MFTs） offer advantages such as compact size， light weight， and high power density， but they also face significant challenges related to magnetic and thermal performance.
TIAN Fengqi, DU Zhenbin, WANG Jianmin, SHI Jian   +3 more
doaj   +1 more source

Effects of Bounded Uncertainties on the Dynamic Characteristics of an Overhung Rotor System with Rubbing Fault

Energies, 2019
This paper investigated the nonlinear vibrations of an uncertain overhung rotor system with rub-impact fault. As the clearance of the rotor and stator is getting smaller, contact between them often occurs at high rotation speeds.
Chao Fu, Dong Zhen, Yongfeng Yang, Fengshou Gu, Andrew Ball   +4 more
doaj   +1 more source