Test Whats new message.
Scheduled Maintenance on Monday 1/13/2025
Single article sales and account management will be unavailable from 5:00 AM - 7:00 PM ET (09:00 - 23:00 UTC). We apologize for the inconvenience.
Showing 1-25 of 21,075 resultsfor "Index Terms":Particle Surface
"Index Terms":Particle Surface
- Sort
Sort By
Results
Uncertainties Associated With the Surface Texture of Ice Particles in Satellite-Based Retrieval of Cirrus Clouds: Part II—Effect of Particle Surface Roughness on Retrieved Cloud Optical Thickness and Effective Particle Size
Ping Yang;Gang Hong;George W. Kattawar;Patrick Minnis;Yongxiang Hu
The simplified ray-tracing technique reported in Part I of this paper is employed to compute the single-scattering properties of hexagonal columns with maximum dimensions ranging from 2 to 3500 mum with a size-bin resolution of 2 mum at wavelengths of 0.86 and 2.13 mum. For small ice crystals, the current treatment of surface roughness may not be adequate because the applicability of the principle...Show More
Metal particle contamination in gas-insulated switchgears/gas-insulated transmission lines
Metal particle contamination in a gas-insulated switchgear (GIS) or a gas-insulated transmission line (GIL) is an important factor leading to the decline of insulation performance. Exploring the deterioration mechanism and suppression measures of metal particles on insulation is a key technical problem in enhancing the dielectric strength of GIS/GIL equipment. In this paper, the charge and motion ...Show More
A third body contact model for particle contaminated electrical contacts
2014 IEEE 60th Holm Conference on Electrical Contacts (Holm)
Year: 2014 | Conference Paper |
Cited by: Papers (11)
The presence of third body contamination can hinder the effectiveness of electrical contacts. Examples of such contaminations are dust particles, wear debris and so on. These particles can penetrate the contact regions and affect the contact mechanics. Once the particles engage in contact, they reduce the conductive real area of contact i.e. contact conduction. This work presents a third body cont...Show More
Modeling Electrostatic Levitation of Dust Particles on Lunar Surface
This paper presents a simulation model on electrostatic levitation of lunar dust particles in the lunar terminator region. Full-particle particle-in-cell simulations are carried out using real ion to electron mass ratio to obtain plasma sheath, surface charging, and the transition point of surface electric field. Test particle simulations are carried out to simulate the levitation of dust particle...Show More
Characteristics of Electric Charges Carried by Dust Particles and Their Effects on Connector Contact Failure
Chinese Journal of Electronics
Cited by: Papers (1)
Dust contamination is one of the major causes of electrical contact failure in the electronic system. This paper describes the characteristics of electric charges carried by dust particles and their effects on connector failure. A Millikan testing method was used for measuring the electric charges. The results show that the variation of electric charges carried by dust particles is located in a ba...Show More
Study on the Effect of Metal Particles on the Surface Trap Characteristics of Different Insulating Materials
Bo Qi;Yuan Luo;Zexuan Yu;Zhuodong Yang;Xiao Yang;Chengrong Li
2023 5th International Conference on Smart Power & Internet Energy Systems (SPIES)
Year: 2023 | Conference Paper |
In HVDC equipment, the surface insulation characteristics of insulators are threatened by the irregular movement of micrometer metal particles. As one of the important means to characterize the insulating properties of materials, surface trap characteristics can effectively characterize the influence of micrometer metal particles on the insulating properties of insulating materials. In this paper,...Show More
A shear horizontal surface acoustic wave (SH-SAW) device is used as a sensor for the liquid environment. As a main particle displacement of the SH-SAW is parallel in the propagation surface and perpendicular in the propagation direction, the SH-SAW does not radiate its energy into the liquid. Therefore, SH-SAW is suitable for the liquid measurement. In this paper, particles in oil are measured by ...Show More
Surface Charge Accumulation on a Real Size Epoxy Insulator With Bouncing Metal Particle Under DC Voltage
Free metal particle can affect surface charge accumulation on epoxy insulator installed in gas-insulated transmission line (GIL) or gas-insulated switchgear (GIS), which results in reduction of surface flashover voltage thus threatening the safe operation of the power equipment. This article reports on the charge accumulation behavior on a real size epoxy insulator with bouncing metal particle und...Show More
In order to further improve the accuracy and speed of the present commonly used NURBS surface method, an improved method for NURBS surface based on particle swarm optimization BP neural network is proposed. Firstly, node vectors of the data points are calculated by using the parametrization method of accumulating chord length. Then, prediction model of node vectors is constructed by using the part...Show More
In this paper, we present a sample-based approach for surface coloring, which is independent of the original surface resolution and representation. To achieve this, we introduce the Orthogonal Fragment Buffer (OFB)—an extension of the Layered Depth Cube—as a high-resolution view-independent surface representation. The OFB is a data structure that stores surface samples at a nearly uniform distribu...Show More
Surface Charging Affecting Metal Particle Lifting Behaviors Around Epoxy Spacer of HVDC GIL/GIS
Jin Li;Yuhuai Wang;Jianan Dong;Hucheng Liang;Boxue Du;Yongsheng Xu;Xiaolin Li
In this article, the mechanisms of surface charging and surface modification of epoxy spacer affecting the lifting voltage and the motion trajectory of spherical metal particles in a downsized dc gas insulated transmission line (GIL) are investigated by simulations and experiments. Results show that the lifting voltage can be predicted with much accuracy by calculating the electric field distribut...Show More
Study on the effect of wire particle on surface charge accumulation of post insulators in DC GIL
2016 International Conference on Condition Monitoring and Diagnosis (CMD)
Year: 2016 | Conference Paper |
Based on the Maxwell equations, surface charge accumulation on the post-insulator was analyzed. The particle pollution, as well as the generating, recombination, migration and diffusion of the positive and negative ions in the gas were taken into account. Furthermore, from the microcosmic perspective, two surface charge accumulation models of the post-insulator with particle pollution were establi...Show More
Diesel Particle Treatment Using a Surface Dielectric Barrier Discharge
The treatment of diesel particle deposit, using a surface dielectric barrier discharge, is investigated. Main results show that, in the presence of diesel particle deposit, discharge current and averaged electric power decrease gradually with the treatment duration. During the treatment process, the microdischarges are intense locally. At the end of the treatment, the discharge behavior is similar...Show More
Parametric Optimization of Magnetic Abrasive Finishing Process Using Genetic Algorithm and Particle Swarm Optimization
Gopal Kumar Saxenaa;Anjaneyulu Kamepalli;Venkatesh Gudipadu;Satish Kumar Injeti;Ramalingaswamy Cheruku
TENCON 2023 - 2023 IEEE Region 10 Conference (TENCON)
Year: 2023 | Conference Paper |
Magnetic Abrasive Finishing (MAF) is advanced finishing techniques which can generate surface finishes at the nanoscale for both magnetic and non-magnetic materials. By enhancing or optimizing the important MAF process parameters, the material's surface finish may be greatly enhanced. The current paper looks into the experimental studies of Hastelloy C- 276 for surface finish improvement $(\%\Delt...Show More
Uncertainties Associated With the Surface Texture of Ice Particles in Satellite-Based Retrieval of Cirrus Clouds—Part I: Single-Scattering Properties of Ice Crystals With Surface Roughness
Ping Yang;George W. Kattawar;Gang Hong;Patrick Minnis;Yongxiang Hu
Surface roughness of ice crystals is a morphological parameter important to the scattering characteristics of these particles. The intent of this paper, reported in two parts (hereafter, Parts I and II), is to investigate the accuracy associated with some simplifications in calculating the single-scattering properties of roughened ice crystals and to quantify the effect of surface roughness on the...Show More
Topographical parameter characteristics of dry sliding surfaces of particle-reinforced aluminum composites
Generally, friction and wear occur on the surface of the materials. It is necessary to investigate the dry sliding friction and wear behavior of surface. In this paper, 3-D topographical parameters were used to investigate the topographical characteristics of dry sliding surfaces for particle-reinforced aluminum composites on semi-metallic friction material. The experimental results indicate that ...Show More
Surface morphology and electrical characteristics of direct fluorinated epoxy-resin/alumina composite
As basic insulating material, epoxy resins are widely used as the matrix of insulators in HVDC transmission system. In most cases, alumina of micro range is blended to improve mechanical properties as well as reduce expenses, etc. However, apart from benefits, the incorporation of micro-particles could alter surface electric behaviors due to the change in material structures and the surface trap d...Show More
Characterizing particulate drug-delivery carriers with atomic force microscopy
This work discusses the benefits of employing an atomic force microscope (AFM) in the characterization of the particulate-type drug-delivery carriers. AFM can provide invaluable information about the physicochemical characteristics of the carriers that play an important role in determining the performance of the drug delivery systems (DDS). A lot of this information cannot be obtained from other c...Show More
Adaptive Particle Size Setting and Normal Calculation Methods in Fluid Rendering
2012 Fourth International Conference on Digital Home
Year: 2012 | Conference Paper |
In this paper, we present an adaptive particle size setting method in Lagrangian-approach based screen space splatting algorithm in real-time fluid rendering. The particle radius will be adjusted according to its Weber number and local density in the rendering process so that a large radius of peaceful fluid particle can help to eliminate a bumpy surface artifact, and a small radius can prevent ob...Show More
Electric contact performance: effects of contact surface morphology and the size of dust particles
Thirty-Sixth IEEE Conference on Electrical Contacts, and the Fifteenth International Conference on Electrical Contacts
Year: 1990 | Conference Paper |
Cited by: Papers (6)
Dust deposition is influenced by many factors such as orientation of the coupon, electric static field, and permittivity of the lubricant which covers the coupon surface. Morphology of the surface is found to be an important factor which effects the dust size and density distribution curve: the rougher the surface, the larger the particles that are deposited. This phenomena is explained theoretica...Show More
Numerical Modeling of Insulating Particles Trajectories in Roll-type Corona-Electrostatic Separators
Mohamed Younes;Amar Tilmatine;Karim Medles;Abdelber Bendaoud;Adrian Samuila;Lucian Dascalescu
The trajectories of the insulating particles in roll-type corona-electrostatic separators depend on the configuration of the electrode system, the applied high voltage, the roll speed, the size of the particles and the relative humidity of the ambient air. The aim of this work was to point out how numerical modeling can be of use in the study of the effects of these factors. Particle charging is m...Show More
Barium-Ferrite Particulate Media for High-Recording-Density Tape Storage Systems
Takeshi Harasawa;Ryota Suzuki;Osamu Shimizu;Sedat Olcer;Evangelos Eleftheriou
The feasibility of data storage on magnetic tape at an areal recording density of 6.7 Gbit/in employing barium-ferrite (BaFe) particulate media was demonstrated in 2006 in a stringent demo. Recently, progress in BaFe media design has been made in three areas as compared with the medium used for the 6.7 Gbit/in2 demo: i) by using ultrafine BaFe magnetic particles, achieving a reduction in particle ...Show More
Regeneration of Sooty Surface Using Nanosecond Pulsed Dielectric Barrier Discharge
In this paper, the regeneration of sooty surface by using nanosecond pulsed surface dielectric barrier discharge type reactor is investigated experimentally. The goal is to characterize the regeneration process as a function of the applied voltage magnitude and pulse polarity. The reactor is composed of two electrodes separated by a dielectric and are arranged asymmetrically. The power supply syst...Show More
Metal particle encouraged surface charge accumulation on epoxy insulator with multi-arc surface profile under DC voltage
Surface charge accumulation on epoxy insulator installed in gas insulated switchgear (GIS) or gas insulated transmission line (GIL) has been recognized as an important factor for electric field distortion that results in reduction of surface flashover voltage. This paper reports on surface charge accumulation behavior on a actual epoxy insulator for 100 kV GIL prototype with multi-arc surface prof...Show More
An approach combined Response Surface Method and Particle Swarm Optimization to ship multidisciplinary design and optimization
2009 IEEE International Conference on Industrial Engineering and Engineering Management
Year: 2009 | Conference Paper |
Cited by: Papers (1)
Ship design is a complex endeavor requiring the successful coordination of many different disciplines. According to various disciplines requirements, how to get a balanced performance is imperative in ship design. Thus, a all-in-one Multidisciplinary Design Optimization (MDO) approach is proposed to get the optimum performance of the ship considering three disciplines, structure; cargo loads and p...Show More
Standards Dictionary Terms
- ambient temperature
- certification
- controlled design
- curie temperature
- distributed temperature sensor
- down-hole heating
- explosive atmospheres
- ferromagnetic material
- guarding
- heat loss
- heat sink
- impedance heating system
- insulated impedance conductor
- integral components
- jumper/jumpering
- maintain temperature
- manufacturer
- maximum ambient temperature
- maximum continuous exposure temperature
- maximum maintain temperature /maximum continuous operating temperature (impedance heater energized)
- maximum surface temperature
- minimum ambient temperature
- minimum installation temperature
- permeability (μ)
- pipeline
IEEE Account
Purchase Details
Profile Information
Need Help?
- US & Canada: +1 800 678 4333
- Worldwide: +1 732 981 0060
- Contact & Support
- About IEEE Xplore
- Contact Us
- Help
- Accessibility
- Terms of Use
- Nondiscrimination Policy
- Sitemap
- Privacy & Opting Out of Cookies
A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity.
© Copyright 2025 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.