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Dissertations / Theses on the topic 'Shielding'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Cheung, Cindy Suit. "Shielding Effectiveness of Superalloy, Aluminum, and Mumetal Shielding Tapes." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/126.

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Using MIL-HDBK-419A, MATLAB and Nomographs, Shielding Effectiveness for the Magnetic Field, Electric Field, and Plane Wave were calculated over a frequency range from 10 Hz to 1 GHz. The three shielding tapes used included superalloy, aluminum, and mumetal. Calculations for Shielding Effectiveness involve the computation of Absorption Loss, Reflection Loss, and Re-Reflection Correction Factor. From the outcome of the calculations, it was suitable to conclude that all three metals fulfill the 40 dB Shielding Effectiveness requirements for SGEMP fields for frequencies greater or equal to 1 MH

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2

Zárate, Devia Yair Daniel. "Phase shielding solitons." Tesis, Universidad de Chile, 2013. http://www.repositorio.uchile.cl/handle/2250/115388.

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Magíster en Ciencias, Mención Física<br>Los solitones son el fen omeno universal m as profundamente estudiado, debido a los innumerables sistemas físicos en los cuales se observa. Estas soluciones corresponden a estados localizados y coherentes que surgen naturalmente en sistemas extendidos, siendo una de sus propiedades m as fascinantes el hecho de que pueden ser tratados como partículas macroscópicas a pesar de estar formados por numerosos componentes microscópicos. Desde su primera descripci on, realizada por J. S. Russell en 1884, el estudio de solitones se centró en sistemas conservativo

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3

Mann, Kulwinder Singh [Verfasser]. "Shielding Behaviour Analysis of Double Layered Slabs. Gamma Ray Shielding / Kulwinder Singh Mann." München : GRIN Verlag, 2018. http://d-nb.info/1165614588/34.

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4

Young, Jeffrey Lee. "Electromagnetic response of thin wires over an homogeneous earth." Diss., The University of Arizona, 1989. http://hdl.handle.net/10150/184906.

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The electromagnetic response of infinitely long, thin wires over a flat earth is presented for two different applications: the shielding properties of an ensemble of parallel wires excited by a plane wave and the electromagnetic coupling of two perpendicular wires excited by a dipole. The shielding study begins with the formulation of the boundary value problem for N wires over a lossy half space. A suitable axial impedance operator is applied to obtain a system of equations whose unknowns are the currents flowing on each wire. Once the currents are determined, the aggregate field produced by

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5

Coker, Audra Lee. "PET/CT shielding design comparisons." Texas A&M University, 2003. http://hdl.handle.net/1969.1/5836.

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The objective of this project was to compare two different methods of calculating dose through lead-shielded walls in the PET/CT suite at Scott & White Hospital in Temple, Texas. The ultimate goal was to see which of the two methods agreed with the actual physical measurements. Minimizing shielding needed in future suite designs would result in a possible reduction of structural as well as financial burden. Formulas and attenuation coefficients following the basic January 2006 AAPM guidelines were used to calculate unattenuated radiation through existing lead walls. The computer code MCNPX was

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6

Davis, Andrew. "Radiation Shielding of Fusion Systems." Thesis, University of Birmingham, 2010. http://etheses.bham.ac.uk//id/eprint/918/.

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This thesis discusses the development, benchmarking and applications of activation dose analysis methods for fusion devices. The development and code logic of the Mesh Coupled Rigorous 2 Step (MCR2S) system is discussed. Following the development of the code, appropriate benchmarking studies were performed on the Frascati neutron generator, and revealed that the code was able to predict shutdown gamma ray doserates to within ±3% of experimentally determined values, for decay times between 3×105 and 107 seconds. The development of the Ion Cyclotron Resonance Heater (ICRH) with regards to neutro

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7

Zhang, Jianan Ph D. Massachusetts Institute of Technology. "Enhancing network robustness via shielding." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/93804.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2014.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 77-80).<br>Shielding critical links enhances network robustness and provides a new way of designing robust networks. We first consider shielding critical links to guarantee network connectivity after any failure under geographical and general failure models. We develop a mixed integer linear program (MILP) to obtain the minimum cost shielding to guarantee the connectivity of a single source-destination (SD)

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8

Öhrlund, Erik. "How Effective is RFID Shielding?" Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-40107.

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9

Lim, Hyun. "Active shielding based on difference potentials." Thesis, University of Salford, 2011. http://usir.salford.ac.uk/26775/.

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Active control of sound is a technique for altering acoustic fields to wanted ones in aimed domains by introducing controllable active secondary sound sources called controls. This thesis describes an active shielding methodology based on difference potentials for the control of noise and preservation of sound in domains. The main feature of this methodology is its ability to automatically preserve "wanted" sound within a domain while cancelling "unwanted" noise from outside the domain. This method of preservation of the wanted sounds by active shielding control is demonstrated with various br

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10

Plytus, H. R., and Г. Р. Плитус. "Special aspects of aircraft wiring shielding." Thesis, National aviation university, 2021. https://er.nau.edu.ua/handle/NAU/50501.

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1. Innovative cables and cabling solutions for next-generation Aerospace – Nexans, 2015. – 24 p. 2. Controlling the EMI effects of aircraft avionics [web resource]. - Access mode: https://cutt.ly/PxIMPTr 3. Determining When to Shield Aircraft Wiring [web resource]. - Access mode: https://cutt.ly/dxI1wKs 4. Cables Shield in Aircraft, Wilson G. Salgado, Miguel G. Molina – 15th LACCEI International Multi-Conference for Engineering, Education, and Technology: “Global Partnerships for Development and Engineering Education”, United States, 2017. – 5 p.<br>Shielding is one of the most reliable

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11

Castro, Aguilera Abril Carolina. "Computational study of nuclear magnetic shielding constants." Doctoral thesis, Universitat de Girona, 2017. http://hdl.handle.net/10803/565597.

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Nuclear Magnetic Resonance (NMR) spectroscopy is an indispensable structural tool in the modern analytical arsenal of chemists and structural biologists. The present thesis is a computational study of the NMR shift constants in a number of chemical systems of interest, using both static and dynamic approaches via Density Functional Theory, to predict, confirm the presence of transient species, and/or explain ambiguous signals in the NMR spectra. Special attention was put on cases where there are strong interactions between the solvent and the molecule studied. In addition, this thesis addresse

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12

Rindelhardt, U., K. Noack, and A. Rogov. "Shielding and Fuel Storage Calculations for GUINEVERE." Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-27990.

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13

Rindelhardt, U., K. Noack, and A. Rogov. "Shielding and Fuel Storage Calculations for GUINEVERE." Forschungszentrum Dresden-Rossendorf, 2008. https://hzdr.qucosa.de/id/qucosa%3A21627.

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14

Rafiq, Muhammad Nadeem. "Carbon Microfiber Material for Electromagnetic (Shielding) Applications." Diss., North Dakota State University, 2015. http://hdl.handle.net/10365/25293.

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Electromagnetic shielding is becoming more and more important with the abundance of wireless devices. Therefore a need has arisen for more versatile, flexible and low-cost solutions for shielding. For these requirements, carbon microfiber material has been proposed for electromagnetic shielding applications. For this purpose its shielding effectiveness has been measured and modeled in a simulation environment. A parametric simulation was conducted for the material property ?conductivity? and the results were compared to measured ones. These simulation results were also verified by the analytic

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15

Manzlak, Derrick Anthony. "Boron Carbide Filled Neutron Shielding Textile Polymers." W&M ScholarWorks, 2007. https://scholarworks.wm.edu/etd/1539626861.

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16

Wells, Joanne. "'Shielding behaviour' : corneal donation in the hospice setting." Thesis, University of Southampton, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439633.

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17

Bhuiyan, M. A. AI-Mamun. "Modeling and Development of a Magnetic Shielding Mechanism." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28846.

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Background: Medical devices relying on biosignal acquisition are susceptible to electromagnetic interference. Current approaches are ineffective at shielding low amplitude, low frequency biosignal measurements. Objective: To develop a magnetic shielding mechanism to improve shielding effectiveness (SE) for low amplitude application. Method: A three layer shielding mechanism with the two inner layers made of cold rolled (CR) steel and an outer layer of aluminum (Al) was investigated. Modeling and simulations were performed using finite element analysis. Experiments were performed on shielding

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18

Lu, Yanwei. "Full-field modelling of crack tip shielding phenomena." Thesis, University of Plymouth, 2011. http://hdl.handle.net/10026.1/885.

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The application of fracture mechanics to engineering design has provided significant advances in understanding of the causes and mechanisms of failure and crack growth. Despite this, there are still some aspects that remain incompletely understood, such as the crack closure/crack shielding effect. The presence of crack closure/shielding acts to reduce . The mechanisms of crack closure/shielding are complicated, and have not been fully understood. This work focuses on the plasticity-induced crack tip shielding mechanism and presents a novel approach to characterise the elastic stress fields und

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19

Goschy, Harriet-Rosita. "Top-down shielding from distraction in visual attention." Diss., Ludwig-Maximilians-Universität München, 2014. http://nbn-resolving.de/urn:nbn:de:bvb:19-171000.

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The present work examines top-down shielding from distraction in visual attention; that is, under which circumstances can the intentions and goals of an observer counteract the bottom-up salience of irrelevant distractors. Several factors of influence will be considered: First, prior experience with distractors, i.e. did observers previously acquire an effective distractor shielding strategy; second, intra- vs. cross-dimensionality of distractors, i.e. are irrelevant distractors defined in the same feature dimension (e.g., shape, color) as the target or in a different feature dimension; third,

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20

Ho, C. W. "Development of Monte Carlo methods for shielding applications." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47109.

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21

Colas, Dorian Frederic Marie. "A diffraction integral based turbomachinery noise shielding method." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/67179.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 85-87).<br>A current research focus in subsonic aeronautics is the reduction of noise, emissions and fuel burn. The Silent Aircraft Initiative, NASA N+2 and N+3 projects are examples of recent efforts investigating innovative aircraft configurations to meet the future goals of air transportation. This requires novel methodologies to assess unconventional aircraft designs. This thesis is part of the N+2 program and

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22

Ridgeway, Robert, and Henry Newton. "An Economic Method to Increase Equipment Rack Shielding." International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606163.

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ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, California<br>The ALMA Project is developing a 66 antenna radio astronomy array on a 5000 meter mountain in Chile. Radio astronomy depends on a radio frequency quiet area. The remote mountain top is ideal for such a radio astronomy array. However, RFI from equipment inside one type of antenna had a path loss of 13 dB to its feed area, when measured at 100 GHz. Carbon filled foam is being used

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23

Mogren, Simon. "Electromagnetic Shielding of Fine Wires for Electrophysiological Sensing." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-291457.

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Tests have been performed to determine whether electromagnetic shielding of fine wires for electrophysiological sensing is a possible way to reduce the external noise in recording of nervous signals. By shielding the wires with a layer of silver, forming a coaxial cable, a reduction of the received power on the lead of 11.8-33 dBm was shown over the 10 – 10 000 Hz range when the test wire was subject to an electromagnetic field from an injection cable. When putting the performance on the interval 50-100 Hz aside the same performance was measured to 25-33 dBm lower received power, which can be

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24

Kyzymchuk, Olena, Svitlana Arabuli, Viktoriia Vlasenko, Vladimir Bajzik, Larysa Ocheretna, and Maros Tunak. "Thermophysical properties of knitted fabric for EMR shielding." Thesis, Київський національний університет технологій та дизайну, 2021. https://er.knutd.edu.ua/handle/123456789/19107.

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25

Rosenberg, Max. "Comparative Analysis of Electrodynamic Toroidal Radiation Shielding Configurations." DigitalCommons@CalPoly, 2018. https://digitalcommons.calpoly.edu/theses/1963.

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Beyond the protective confines of Earth's atmosphere and magnetosphere, spacecraft are subject to constant bombardment by high-energy charged particles originating from our Sun in the form of Solar Particle Events (SPEs), and from outside the solar system in the form of Galactic Cosmic Rays (GCRs). The harm these particles do can be reduced or mitigated outright through radiation shielding. Because protons and other charged particles comprise most of these radiation particles, strong magnetic fields could be generated around spacecraft to deflect incoming charged radiation particles. This thes

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26

Hurley, Shawn Patrick. "Liquid Crystal Displays for Pixelated Glare Shielding Eyewear." Kent State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=kent1279550994.

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27

Campbell, Stuart William. "Shielding gas parameter optimisation in arc welding processes." Thesis, University of Strathclyde, 2015. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25988.

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This thesis is focussed on shielding gas optimisation in gas shielded arc welding processes, and has been conducted along two themes; deriving conditions in which the shielding gas flow rate can be safely reduced, and through the highly novel process of alternating shielding gases. The correct shielding gas flow rate is essential for providing adequate protection to the weld metal during the heating, liquid and solidification stages. Hence, there is an optimum shielding gas flow rate, but this is difficult to define and is often decided on the basis of preference or experience. A multi-discipl

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28

Armstrong, Robert. "Measurement of shielding in electrically large metallic enclosures." Thesis, University of York, 2013. http://etheses.whiterose.ac.uk/3832/.

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The measurement techniques employed to obtain the shielding effectiveness (SE) of enclosures using the current version of IEEE 299.1 only apply to enclosures of side dimension greater than 0.1m, and are also lacking in a full analysis of the field distributions within the enclosure. The work presented here uses the IEEE 299.1 draft standard as a base and investigates different methods of obtaining the SE, as well as looking at making the measurement more applicable to physically small and electrically large enclosures, and hoping to inform future versions of shielding effectiveness standards f

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29

Ko, Stephen C. "Development of Radiation Shielding Materials for Space Applications." W&M ScholarWorks, 1997. https://scholarworks.wm.edu/etd/1539626106.

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30

Ruekberg, Jared Allen. "STRUCTURAL MICROMETEOROID AND RADIATION SHIELDING FOR INTERPLANETARY SPACECRAFT." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1401.

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This paper focused on two significant space forces that can affect the success of a spacecraft: the radiation and micrometeoroid environments. Both are looked at in the context of the region of space between Earth and Mars. The goal was create reference environments, to provide context to results of environmental modeling, and to provide recommendations to assist in early design decisions of interplanetary spacecraft. The radiation section of this report used NASA's OLTARIS program to generate data for analysis. The area of focus was on the radiation effects for crewed missions, therefore effe

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31

Karam, Charbel. "Optical shielding of collisions between ultracold polar molecules." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASP137.

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Ce travail s'inscrit dans le contexte des recherches sur les gaz quantiques de molécules ultra-froides. Ce domaine en pleine expansion place ce type de système comme plate-forme prometteuse pour le contrôle de gaz quantiques pour des applications comme la simulation quantique ou la chimie ultra-froide.Lorsque ces molécules sont préparées dans leur état fondamental absolu et piégées, les observations révèlent la fuite rapide des molécules du piège par des processus collisionnels encore mal compris, empêchant toute application. Une solution consiste à exposer ces molécules à un champ électromagn

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32

Yaslak, Halil Ibrahim. "Assessment Of Shielding Effectiveness By Using Electromagnetic Topology Method." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615609/index.pdf.

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In this thesis, determination of the shielding effectiveness of a rectangular shielding box with apertures on its walls by using electromagnetic topology (EMT) technique based on Baum-Liu-Tesche (BLT) equation is presented. The presented technique is applied to determine the field penetration into various rectangular shielding boxes with different sizes and aperture dimensions. An HP branded computer case is also analysed as a rectangular shielding box with a CD driver slot as an aperture. Results on electromagnetic field penetration through the apertures into the boxes at different frequenci

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33

Banks, Julia Michelle. "Design of a ²⁵²CF-based neutron shielding test stand." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/19598.

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34

Wong, Kok Hoong. "Use of recycled carbon fibre for electromagnetic interference shielding." Thesis, University of Nottingham, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439856.

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35

Gibson, Nathan A. (Nathan Andrew). "Novel Resonance Self-Shielding Methods for Nuclear Reactor Analysis." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/103658.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2016.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 242-246).<br>In the simulation of the behavior of neutrons in a nuclear reactor, there has long been a dichotomy in solution techniques. One can use Monte Carlo methods, known to be very accurate and problem agnostic but also very costly

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36

Adam, Ahmad Yahia. "Theoretical Prediction of Nuclear Magnetic Shielding Constants of Acetonitrile." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/76769.

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Gauge invariant shielding constants calculations of ?H, ?C, and ??N were calculated for acetonitrile in the gas and liquid phases. Dierent basis sets as well as dierent ab initio and DFT methods were tested to select a time-ecient level of theory with reasonable accuracy. The eect of nuclear motion on the shielding constants was also explored. To investigate solvent eects on the shielding constants of acetonitrile, dierent clusters were extracted from molecular dynamics simulations. Convergence to the experimental values varied for the dierent clusters. The geometry of the central molecule in

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37

Landolt, Scott David. "An analysis of airflow patterns inside precipitation gauge shielding." Connect to online resource, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1453573.

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38

Horner, Kate Elizabeth. "An investigation of molecular properties using magnetic shielding calculations." Thesis, University of York, 2014. http://etheses.whiterose.ac.uk/7391/.

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Isotropic shielding calculations were performed across finely spaced two- and three-dimensional grids positioned through and around a wide range of molecules. These magnetic shielding calculations were used to investigate aromaticity, antiaromaticity and a variety of chemical bonding features. This technique was found to be incredibly sensitive and able to distinguish between bonds of different order as well as bonds of the same order but in different environments. The shielding along the whole bonding region, as well as 1 Å above the bond and cross-sections through the bond, can be used to pr

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39

Khatchadourian, Rafael. "Monte Carlo simulations for neutron shielding in radiotherapy bunkers." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=119421.

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Photoneutrons generated in the linac head are a byproduct of the radiotherapy process and can be potentially harmful to clinical personnel. The lack of accuracy associated with analytical photoneutron shielding methods has generated much interest in the Monte-Carlo (MC) method as a more flexible and precise tool for radiotherapy bunker design. The purpose of this work was to use MC simulations to characterize photoneutron fluence, dose, and spectrum throughout various radiotherapy bunker configurations and for various room design features, such as the presence of a maze, a bulkhead, and the ad

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40

Grimaud, Lou. "Magnetic shielding topology applied to low power Hall thrusters." Thesis, Orléans, 2018. http://www.theses.fr/2018ORLE2046/document.

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Les propulseurs de Hall sont l’une des techniques de propulsion fusée par plasma les plus utilisés. Ils possèdent une impulsion spécifique moyenne et un haut rapport poussé sur puissance qui les rend idéal pour une grande partie des applications commerciales et scientifiques. Une de leurs limitations principales est l’érosion des parois du propulseur par le plasma qui réduit leur durée de vie. La topologie dite “d’écrantage magnétique” est une solution proposée pour prolonger cette durée de vie. Elle est ici appliquée à un petit propulseur de Hall de 200W. Dans cette thèse les règles de mise à

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41

Malkowski, Susan Kate. "MAGNETIC SHIELDING STUDIES FOR THE NEUTRON ELECTRIC DIPOLE MOMENT EXPERIMENT AT THE SPALLATION NEUTRON SOURCE." UKnowledge, 2011. http://uknowledge.uky.edu/physastron_etds/1.

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The neutron Electric Dipole Moment Experiment at the Spallation Neutron Source requires an overall magnetic shielding factor of order 105 to attenuate external background magnetic fields. At present, the shielding design includes an external (room-temperature) multi-layer μ-metal magnetic shield, a cryogenic (4 Kelvin) Pb superconducting shield, and a cryogenic (4 Kelvin) ferromagnetic shield composed of Metglas ribbon. This research determined how to construct a Metglas shield using minimal material that produced axial and transverse shielding factors of ~267 and ~1500. In addition, the μ-met

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Gravelle, Luc B. "Shielding effectiveness of enclosures predicted via the finite element method." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5950.

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This thesis presents the application of the numerical finite element method (FEM) in solving the electromagnetic shielding effectiveness of enclosures. The emphasis is placed on the solution of time-dependant varying fields, as for example an NEMP or a digital signal, directly in the time domain. Previous numerical prediction of shielding effectiveness on complicated structures have been analyzed with the FEM in the frequency domain whereas no study, to the author's knowledge, has been conducted in the time domain. EMP type varying fields impinging on enclosures are studied with this new CAD t

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43

Chen, Jue. "Shielding characteristics of a commercial 19-inch rack-based cabinet." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.mst.edu/thesis/pdf/Chen_09007dcc803e6a55.pdf.

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Thesis (M.S.)--University of Missouri--Rolla, 2007.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed February 5, 2008) Includes bibliographical references (p. 82).

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44

Peterson, Robert E. "Shielding requirements for an energy-recovery LINAC Free Electron Laser." Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/10671.

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Many Free Electron Lasers (FELs) utilize high current, high energy electron beams. Inevitably, a small fraction of the electrons in the beam will exist outside the core beam; these electrons are referred to as beam halo. The halo electrons will travel down an FEL's transport system with the core electrons; any portion of those halo electrons that intercept transport system components can generate radiation that is harmful to the operating personnel. The amount of shielding that is required to keep personnel safe from radiation exposure is evaluated as a function of the lost halo current. Using

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45

Girard, Guillaume. "Shielding effectiveness estimation." Thesis, 2002. http://spectrum.library.concordia.ca/1816/1/MQ72908.pdf.

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The application of SE estimation methods for small enclosures is the main subject of this thesis. Three Shielding Effectiveness estimation methods are presented; Empirical, Experimental and Numerical Simulation. SE estimates have been compared with SE measurements showing close correlations between the numerical simulation and the experimental results. It has been proved that the SE of an empty enclosure, compared with that of an enclosure containing a printed circuit board, differs due to volume change, herein Q variation. Conclusions are formulated in terms of further works to be accomplishe

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46

Chen, Ming-Jer, and 陳明哲. "Electromagnetic Shielding Wood Veneer Composites." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/31151076246537875147.

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碩士<br>國立屏東科技大學<br>森林系<br>93<br>Abstract Student ID:M8812014 Title of thesis:Electromagnetic Shielding Wood Veneer Composites Total page:61 Name of Institute:Department of Forestry Graduate date:June, 22 2005 Degree Conferred:Master Name of student:Chen, Ming-Jer Adviser:Lin, Cheng-Jung Huang, Yaw-Fuh The contents of abstract in this thesis: The main purpose of this study was aimed at developing a method for manufacturing electromagnetic interference shielding wood veneer composites (WVC). In the study, the thin fi

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Jalali, Mohsen. "Improving Electromagnetic Shielding with Metallic Nanoparticles." Thesis, 2013. http://spectrum.library.concordia.ca/977537/1/Jalali_PhD_F2013.pdf.

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Due to major advantages (e.g. weight saving, maintenance advantages), the airframe manufacturers use more and more Polymer Matrix Composites (PMCs) in different parts of aircraft structures. But PMCs have the substantial disadvantage of low conductivity and therefore low Electromagnetic (EM) Shielding. Electromagnetic Interference (EMI) sources are all around and inside aircraft and can potentially threaten the immunity of the aircraft. Metallic meshes have been used to overcome this deficiency. However at high frequencies (UHF, SHF), most of the metallic mesh loses the performance. Regrettabl

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YI, LIU CHIA, and 劉佳益. "Shielding of Power Frequency Magnetic Field." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/65259132089781498978.

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Abstract:

碩士<br>國立臺灣科技大學<br>電機工程系<br>91<br>This thesis is to study the magnetic-field shielding methods caused by electric power lines. The finite element based simulation package, FLUX3D, can be used to establish the simulation model and to evaluate the magnetic-field shielding effect of aluminum plates, silicon-steel plates and Amumetal. It is desired to reduce magnetic-field interferences due to three-phase currents. For the improvement-scheme of power frequency magnetic-field, we can concentrate power lines arrangement and have suitable phase arrangement. So that the magnetic-field flux density due

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Chiang, Chih-Ming, and 蔣志明. "Metallized Plastic Pellets for EMI Shielding." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/20340837286945847042.

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50

Chang, Kuei-po, and 張貴博. "Passive Magnetic Shielding System in ELF." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/74892080223845566756.

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Abstract:

碩士<br>國立臺灣大學<br>土木工程學研究所<br>104<br>The extremely low frequency (ELF) magnetic field has significant impact on yield rate especially when the technical note reaches less than 14 nanometer in next-generation nano-Fab. For sensitive equipment such as the SEMs, TEMs, STEMs, FIB writers, and E-beam writers, it suggests that the ELF magnetic field should be lower than 0.3 milli-Gauss to guarantee good yield. Therefore, mitigating the magnetic field by active/passive approaches such as the material shielding, and active canceling are highly demanded. This study focuses on the development of a passive

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