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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"shielding effectiveness"”.
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Shielding Effectiveness of Superalloy, Aluminum, and Mumetal Shielding Tapes
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 …
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Evaluation of fast neutron shielding effectiveness in light-element compounds
Fast neutron shielding has important applications in accelerator facilities, reactor technology, space radiation protection programs, and in minimizing the dose in radiation facilities. Due to their ability to reduce neutron energy and their high absorption cross sections, lightweight and low …
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Stiklo paketų ekranavimo efektyvumo tyrimas mikrobangų ruože /
… purpose of this work is to investigate microwave shielding effectiveness (SE) of modern window panes. In addition, it will be made sure of what is the main mechanism behind the electromagnetic shielding by investigating three different glasses reflection coefficient. In order to achieve these …
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Development of conductive sheet composite based on kenaf fibre loaded with polyaniline for anti-static packaging application.
… the preparation of electrically conductive shielding sheets made up of kenaf fiber and polyaniline (KF/PANI) via in-situ polymerization method. This modification has the potential to be used as static shielding packaging, which will help to prevent the build-up of static electricity during …
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Processing and characterization of ceramic superconductor/polymer composites
… applications relying on the Meissner effect or shielding capability are limited by the mechanical performance, processability, and environmental resistance of high temperature superconductors; however, these problems can be alleviated by making superconductor/polymer composites. One goal of this …
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Development of an Absorbing Radio Frequency Shield for Safe Magnetic Resonance Imaging
… rise at the lead tip is calculated and the shielding effectiveness of the proposed ARFS is analyzed. A total number of 297 lead-pathways are investigated. A head-only ARFS is also discussed for higher flexibility. Finally, the lead-tip temperature rise is measured inside a phantom for seven …
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Modeling strategies for estimating and suppressing electromagnetic interference and improving power integrity
… length or characteristic impedance.</p> <p>Shielding the victim or isolating the noise source can suppress electromagnetic interference. Numerical and analytical methods can accurately estimate shielding effectiveness if the conductivity and permeability of the shielding material is known. A …
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Modeling aperture radiation for RF interference applications
… method of moments(MoM) solution to evaluate the shielding effectiveness of a metallic enclosure with apertures on top wall by formulating a pair of coupled mixed potential integral equations (MPIEs). Application of Ewald transform to the computation of Green's function in the cavity yields fast …
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Advanced Manufacturing of Functional Lightweight Conductive Composite Systems for Sustainable and Flexible Electronics
… the development of materials for effective EMI shielding has gained significant importance.Conductive polymer composites (CPCs) offer promising potential as advanced materials for EMI shielding applications. CPCs are lightweight, easily processed, and exhibit favorable mechanical and thermal …
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Absorption-Dominant Electromagnetic Interference Shielding Polymer Composites and Foams
… electromagnetic interference (EMI) shielding while mitigating secondary electromagnetic pollution. Despite the significance of structural and geometrical factors in creating high-performance absorption-dominant EMI shielding materials, systematic structure-property (i.e., EM wave …
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Hybrid optimisation electromagnetic interference shielding effectiveness:mechanical and physical performance of plaster mortar containing palm oil fuel ash using taguchi grey and taguchi-flower pollination algorithm methods
… level design (L16 (44 22)) to examined the EMI shielding effectiveness (SE), mechanical properties and physical properties of the mortar. Six factors namely POFA admixture percentage, topcoat powder /binder ratio (TP/B), water/binder ratio (W/B), latex agent content (LA), the particle size of …
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Effect of Processing Techniques and Blend Compositions on Electrical Properties of Immiscible Polymer Blend/MWCNT Nanocomposites
… conductivity, electromagnetic interference shielding effectiveness (EMI SE) and dielectric property in immiscible polymer blend nanocomposites. In chapter 4, we have reported three strategies to mix 3 wt % multi-walled carbon nanotube (MWCNT) in five blend compositions of polystyrene …
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Carbon Hybrid Materials for Electromagnetic Interference (EMI) Shielding and Charge Storage Applications
… namely, EMI (electromagnetic interference) shielding and charge storage. In EMI shielding, our goal was to alleviate the destructive interference of electronic devices caused by their emitted electromagnetic waves which adversely affect device functions as well as the performance of nearby …
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Advancing Direct-Spun Carbon Nanotube Textiles, From Field Alignment to Innovative Applications
… standalone electromagnetic interference shielding material (ESM) made of a direct-spun nonwoven CNT mat. The electrically conductive textile (~50×103 S m-1) was post-treated by chemical oxidation or thin copper metallization, increasing the conductivity by ~10 and ~1000 times, …
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Development of Multifunctional Polymer Nanocomposites with Hybrid Structures for Fabrication of Stretchable Strain Sensing and Wearable Electronic Devices
… contributed to the simultaneous enhanced EMI shielding effectiveness (SE) of 57.4 dB and mechanical properties such as strain to failure at 3.5 vol% hybrid filler concentrations. The hybrid nanocomposite with SSFs and CNTs in PP is a good coating candidate to protect the sensor signals by …
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Electrical, Thermal, and Machining Behaviour of Injection Moulded Polymeric CNT Nanocomposites
… process. The electromagnetic interference shielding effectiveness (EMI SE) of the moulded composites was studied by considering the alignment of the MWCNTs. The EMI SE decreased with an increase in the alignment of the injection moulded MWCNTs in the polymer matrix. Anisotropic thermal …
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Endlosfaserverstärkte Thermoplaste zur Abschirmung elektromagnetischer Strahlung
Durch die Ergänzung von Organoblechen mit gewebten Strukturen aus Metalldrähten können hochbelastbare Bauteile gleichzeitig mit einer abschirmenden Wirkung versehen werden und ermöglichen so Anwendungen wie beispielsweise im Umfeld der Elektromobilität. Im Rahmen der vorliegenden Arbeit wird ein …