Results 81 to 90 of about 30,463 (305)

ELECTRODYNAMIC FORCES IN PLAIN CONTACT ELEMENTS

Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2005
The paper has proposed algorithms for calculation of shock electrodynamic forces acting on the layers of multi-layer plain contacts under short-circuit conditions based on electromagnetic force density, which is calculated with the account of non-uniform
A. N. Gerasimovich, D. A. Gerasimovich, Y. A. Klimovich   +2 more
doaj  

3D Printing Innovations in Polymeric Porous and Patterned Architecture

Advanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil, Sri Vaishnavi Thummalapalli, Clarissa Westover, Arunachalam Ramanathan, M. Taylor Sobzcak, Roumika Patil, Qixuan Xiang, Tiantian Li, Sui Yang, Timothy E. Long, Hongyue Sun, Xianqiao Wang, Yang Liu, Kenan Song   +13 more
wiley   +1 more source

A New Approach for Transformer Interturn Faults Detection Using Vibration Frequency Analysis

Iranian Journal of Electrical and Electronic Engineering, 2019
Interturn fault detection is a challenging issue in power transformer protection. In this paper, interturn faults of distribution transformer are studied and a new online detection method based on vibration analysis is proposed.
S. Hajiaghasi, K. Abbaszadeh, A. Salemnia   +2 more
doaj  

A New Method of Measuring Velocity Profiles using a MultiElectrode Electromagnetic Flow Meter

, 2010
This paper describes a model of a novel design of electromagnetic flow meter for velocity profile measurement in single phase and multiphase flows with nonuniform axial velocity profiles.
Lucas, Gary, Leeungculsatien, Teerachai
core  

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

Advanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang, Zhewen Xu, Yuwen Xu, Björn Josteinsson, Simon Josephy, Dawei Zhang, Yunlong Sun, Heung‐Sik Park, Jihun Kim, Kanghyun Chu, Kyung Song, Danyang Wang, Chan‐Ho Yang, Andrea Morales, Jan Seidel   +14 more
wiley   +1 more source

Fast calculation of the multi-speed vibration characteristics of PMSMs considering tangential force and modal participation factor

Journal of Low Frequency Noise, Vibration and Active Control
This paper addresses the multi-physical field coupling problem of electromagnetic vibration in permanent magnet synchronous motors (PMSMs), and presents a fast calculation method for multi-harmonic decoupling of electromagnetic forces based on subdomain ...
Dawei Gu, Dashuai Shi, Jingming Wan, Lisheng Zheng, Zhuo Xu, Zhengqing Liu, Baisong Pan, Dapeng Tan, Bangchun Wen   +8 more
doaj   +1 more source

Electromagnetic Forces in Power Transformers under short circuit conditions

, 2022
Power transformers are among the most expensive and key apparatuses in an electric power system. It is important thus, that they are properly protected and well-maintained. Transformers experience different stresses while in operation.
Hachimenum Nyebuchi Amadi
core   +1 more source

Vacuum Formed Spherical Triboelectric Architecture Overcoming Direction Constraints for 3D‐Omnidirectional Ultrasonic Energy Receiving

Advanced Functional Materials, EarlyView.
First vacuum formed spherical triboelectric converter for 3D‐omnidirectional ultrasonic energy receiving, with configurable DC or pulse outputs for versatile applications. ABSTRACT Ultrasound‐driven triboelectric nanogenerators (UD‐TENGs) have emerged as promising ultrasonic energy converters for underwater and biomedical applications.
Yanqin Huang, Mengjie Qin, Zixuan He, Xu Yang, Wenjie Chen, Siya Zhou, Qiyuan Zhang, Zhangwei Wang, Yicheng Wang, Yonghong Cheng, Daniel M. Mulvihill, Sandy Cochran, Qingshen Jing   +12 more
wiley   +1 more source

Electromagnetic Force Distribution and Wall Thickness Reduction of Three-Coil Electromagnetic Tube Bulging With Axial Compression

IEEE Access, 2020
In the conventional electromagnetic tube expansion, tube wall thickness tends to decrease significantly while the workpiece is expanded. This paper is aimed at introducing a new technique using three-coil electromagnetic tube bulging with axial ...
Li Qiu, Wang Zhang, A. Abu-Siada, Qi Xiong, Chenglin Wang, Yao Xiao, Bin Wang, Yantao Li, Jinbo Jiang, Quanliang Cao   +9 more
doaj   +1 more source

Electromagnetic forming by distributed forces in magnetic and nonmagnetic materials [PDF]

, 2004
In this paper, we discuss the electromechanical force densities associated with pulsed electromagnetic fields in inhomogeneous, linear media with conductive losses, in the context of a process of shaping metal objects.
Blok, H., Verweij, M.D., Berg, van den, P.M., Motoasca, T.E.   +3 more
core   +1 more source