Results 31 to 40 of about 219,781 (336)
Sensors, 2023 Pipeline magnetic flux leakage inspection is widely used in the evaluation of material defect detection due to its advantages of having no coupling agent and easy implementation.
Pengfei Gao +3 more
doaj +1 more source
Analytical modeling of open-Circuit air-Gap field distributions in multisegment and multilayer interior permanent-magnet machines [PDF]
, 2009 We present a simple lumped magnetic circuit model for interior permanent-magnet (IPM) machines with multisegment and multilayer permanent magnets. We derived analytically the open-circuit air-gap field distribution, average air-gap flux density, and ...
Chan, C.C. +3 more
core +1 more source
Sensors, 2023 In order to solve the problem of the quantification of detection signals in the magnetic flux leakage (MFL) of defective in-service oil and gas pipelines, a non-uniform magnetic charge model was established based on magnetic effects.
Bin Liu +5 more
doaj +1 more source
Quasistatic Contraction of Magnetic Protostars Due to Magnetic Flux Leakage [PDF]
Symposium - International Astronomical Union, 1981 A protostar with sufficient magnetic flux can be in quasistatic equilibrium. The structure at the time t of such an axisymmetric protostar immersed in a medium of finite pressure is determined when the mass m(ϕ, t) in each axisymmetric magnetic tube with the flux ϕ is given.
openaire +1 more source
Analysis and Modeling of Axial Leakage for Spoke-Type Hybrid Permanent Magnet Machines
IEEE Access, 2023 In this study, we propose a novel analysis method for a spoke-type permanent magnet (PM) synchronous motor (PMSM) using two types of PMs that consider axial leakage flux using a magnetic equivalent circuit (MEC).
Chang-Hoon Seok +4 more
doaj +1 more source
Simulation of a tubular linear magnetic gear using HTS bulks for field modulation [PDF]
, 2011 paper no. 4LPD-01A tubular linear magnetic gear is proposed, which newly utilizes high temperature superconductor (HTS) bulks for its field modulation.
Chau, KT, Li, J, Li, W
core +1 more source
IEEE Access, 2019 Permanent magnet (PM) machine with consequent pole (CP) rotor can improve the PM utilization ratio. However, one group PMs with the same polarity is replaced by iron core which deteriorating the electromagnetic performance of the machine, including even ...
Feng Li +3 more
doaj +1 more source
The lower boundary of the accretion column in magnetic cataclysmic variables [PDF]
, 2001 Using a parameterised function for the mass loss at the base of the post-shock region, we have constructed a formulation for magnetically confined accretion flows which avoids singularities, such as the infinity in density, at the base associated with ...
Aizu +20 more
core +2 more sources
Analysis of Leakage in a Sustainable Water Pipeline Based on a Magnetic Flux Leakage Technique
Sustainability, 2022 Pipelines are typically used to transport oil, natural gas, water, etc. It is one of the most effective methods for transferring fluids over long distances. However, long-term usage of these pipes without maintenance results in the formation of residues,
Mathivanan Durai +3 more
semanticscholar +1 more source
Coronal heating in coupled photosphere-chromosphere-coronal systems: turbulence and leakage [PDF]
, 2011 Coronal loops act as resonant cavities for low frequency fluctuations that are transmitted from the deeper layers of the solar atmosphere and are amplified in the corona, triggering nonlinear interactions.
A. Verdini +21 more
core +5 more sources