Results 41 to 50 of about 1,113,144 (380)

Reverse Force Suppression Method of Reluctance Coil Launcher Based on Consumption Resistor

open access: yesIEEE Access, 2021
When armature passes through the central plane of a driving coil in the process of reluctance coil launching, the magnetic force will reverse and slow down the armature speed.
Chunyan Liang   +4 more
doaj   +1 more source

Comparison and Analysis of Electromagnetic Characteristics of Basic Structure of Wireless Power Coil for Permanent Magnet Motors in Electric Vehicles

open access: yesWorld Electric Vehicle Journal, 2023
The purpose of this paper is to compare and analyze the electromagnetic characteristics of the basic structure of the coil in the electromagnetic coupling mechanism for the wireless power supply of permanent magnet motors in electric vehicles.
Junfeng Zhao   +3 more
doaj   +1 more source

Magnetomotive forming for precision sizing and joining of large-diameter tubes [PDF]

open access: yes, 1969
Portable electromagnetic coil enables high precision expansion or constriction and joining of large diameter metal tubes. A nonconducting mandrel or forming die is used on the side of the tubes wall opposite the coil.
Bennight, J. D., Schwinghamer, R. J.
core   +1 more source

Design of wideband vibration-based electromagnetic generator by means of dual-resonator [PDF]

open access: yes, 2014
This paper describes the design of a wideband electromagnetic energy harvester that utilizes a novel dual-resonator method to improve the operational frequency range of the vibration-based generator. The device consists of two separate resonator systems (
Gilbert, J. M., Ooi, B. L.
core   +1 more source

Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere

open access: yesAdvanced Engineering Materials, EarlyView.
In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May   +9 more
wiley   +1 more source

Improving the Electromagnetic Vibration Energy Harvester Performance by Using a Double Coil Structure

open access: yesApplied Sciences, 2022
The power generation capability of an electromagnetic vibration energy harvester augmented with an additional coil was investigated and compared with that of a standard single coil electromagnetic energy harvester.
Luigi Costanzo   +2 more
doaj   +1 more source

Electromagnetic induction and damping - quantitative experiments using PC interface [PDF]

open access: yes, 2001
A bar magnet, attached to an oscillating system, passes through a coil periodically, generating a series of emf pulses. A novel method is described for the quantitative verification of Faraday's law which eliminates all errors associated with angular ...
Kumar, Satyendra   +2 more
core   +2 more sources

Slight Truncation Changes in Iron Oxide Nanocubes Strongly Affect Their Magnetic Properties

open access: yesAdvanced Functional Materials, EarlyView.
Subtle variations in nanoparticle morphology can lead to significant changes in functional properties. An automated shape‐fitting method captures minor differences in corner truncation between iron oxide nanocubes of similar sizes synthesized under identical conditions, revealing pronounced disparities in their magnetic and hyperthermia behavior ...
Kingsley Poon   +7 more
wiley   +1 more source

Optimisation of Energy Transfer in Reluctance Coil Guns: Application to Soccer Ball Launchers

open access: yesApplied Sciences, 2020
Reluctance coil guns are electromagnetic launchers having a good ratio of energy transmitted to actuator volume, making them a good choice for propelling objects with a limited actuator space. In this paper, we focus on an application, which is launching
Valentin Gies   +6 more
doaj   +1 more source

Low temperature latching solenoid [PDF]

open access: yes, 1981
A magnetically latching solenoid includes a pull-in coil and a delatching coil. Each of the coils is constructed with a combination of wire materials, including material of low temperature coefficient of resistivity to enable the solenoid to be operated ...
Wang, W. S.
core   +1 more source

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