114 resources related to Metal foam
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2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting
The joint meeting is intended to provide an international forum for the exchange of information on state of the art research in the area of antennas and propagation, electromagnetic engineering and radio science
The ITherm Conference series is the leading international venue for scientific and engineering exploration of thermal, thermomechanical, and emerging technology issues associated with electronic devices, packages, and systems.
The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted papers will be peer reviewed. Accepted high quality papers will be presented in oral and postersessions, will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE
The ACC is the annual conference of the American Automatic Control Council (AACC, the U.S. national member organization of the International Federation for Automatic Control (IFAC)). The ACC is internationally recognized as a premier scientific and engineering conference dedicated to the advancement of control theory and practice. The ACC brings together an international community of researchers and practitioners to discuss the latest findings in automatic control. The 2020 ACC technical program will
ECTC is the premier international conference sponsored by the IEEE Components, Packaging and Manufacturing Society. ECTC paper comprise a wide spectrum of topics, including 3D packaging, electronic components, materials, assembly, interconnections, device and system packaging, optoelectronics, reliability, and simulation.
Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.
Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission
Component parts, hybrid microelectronics, materials, packaging techniques, and manufacturing technology.
Provides leading edge information that is critical to the creation of reliable electronic devices and materials, and a focus for interdisciplinary communication in the state of the art of reliability of electronic devices, and the materials used in their manufacture. It focuses on the reliability of electronic, optical, and magnetic devices, and microsystems; the materials and processes used in the ...
Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.
2015 International Conference on Noise and Fluctuations (ICNF), 2015
Multi-layer metal foam sound absorption structure theory model based on transfer function model is proposed in this paper on the strength of the equivalent fluid model. The model can be used to predict the sound absorption effect of composite structure for sound absorbing and guide the design of the structure parameters. The accuracy of the model is verified by comparing ...
2009 3rd International Conference on Bioinformatics and Biomedical Engineering, 2009
Metal foams, especially open-celled foams, have been greatly improved in the acoustic performance in high frequencies. In this paper, the acoustic absorption behaviour of the compound Al-alleged foam in low frequencies was studied. The compound Al-alleged foam is composed of two Al foam plates and an air-gap which between the two Al foam plates. The absorption coefficient of the foam ...
IEEE Electron Device Letters, 2017
The proposed innovative manufacturing process-described in detail-uses metal foam to create a pressed contact between the top side of a printed circuit board-embedded power die and the rest of the circuit. Initial prototypes were constructed using diodes with die dimensions of 4 mm × 6.35 mm. The prototypes were electrically characterized: the chip and contact dc and ac impedance values ...
2011 5th International Conference on Bioinformatics and Biomedical Engineering, 2011
The sound absorption property of a multilayered aluminum foam structure was investigated at present work. The absorption coefficients of the structure were measured by the transfer function method. Based on the equivalent fluid model, a theoretical model for the multilayered structure was presented. Compared with the experiment, the theoretical sound absorption coefficients of the multilayered structure were consistent with experimental ...
INTELEC 05 - Twenty-Seventh International Telecommunications Conference, 2005
Millimeter-Wave Bandpass Filter Using High-Q Conical Inductors and MOM Capacitors: RFIC Interactive Forum
Kaizad Mistry of Intel accepts the IEEE Corporate Innovation Award - Honors Ceremony 2016
2015 IEEE Honors: IEEE Jun-ichi Nishizawa Medal - Dimitri A. Antoniadis
M. George Craford accepts the IEEE Edison Medal - Honors Ceremony 2017
Niobium Manufacturing for Superconductivity - ASC-2014 Plenary series - 5 of 13 - Tuesday 2014/8/12
RF-pFET in Fully Depleted SOI Demonstrates 420GHz FT: RFIC Industry Showcase 2017
One HTS Josephson Junction, An Array of Applications: Has anything come from HTS devices in the last 30 years?
Single Crystal AlGaN Bulk Acoustic Wave Resonators on Silicon Substrates with High Electromechanical Coupling: RFIC Industry Showcase
Life Sciences: Surface Enhanced Raman Spectroscopy, and more
Lunar Industrialization: The First Step to the Solar System
Lighting the Way: Optical Sensors in the Life Sciences
Larson Collection interview with Melvin Calvin
Magnetic Materials and Magnetic Devices - Josep Fontcuberta: IEEE Magnetics Distinguished Lecture 2016
Multi-layer metal foam sound absorption structure theory model based on transfer function model is proposed in this paper on the strength of the equivalent fluid model. The model can be used to predict the sound absorption effect of composite structure for sound absorbing and guide the design of the structure parameters. The accuracy of the model is verified by comparing the calculated results obtained from the model with the experimental data. The best sound absorption properties can be obtained by adjusting the multi-layer structure parameters of foam metal.
Metal foams, especially open-celled foams, have been greatly improved in the acoustic performance in high frequencies. In this paper, the acoustic absorption behaviour of the compound Al-alleged foam in low frequencies was studied. The compound Al-alleged foam is composed of two Al foam plates and an air-gap which between the two Al foam plates. The absorption coefficient of the foam at low frequencies was measured in different conditions by means of standing wave tube and the acoustic absorption regularity of the foam was studied.
The proposed innovative manufacturing process-described in detail-uses metal foam to create a pressed contact between the top side of a printed circuit board-embedded power die and the rest of the circuit. Initial prototypes were constructed using diodes with die dimensions of 4 mm × 6.35 mm. The prototypes were electrically characterized: the chip and contact dc and ac impedance values were measured and compared with those obtained for conventional packaging that uses bond wires. The electrical impedance of the prototypes was found to be similar to that of a state-of-the-art industrial package. Moreover, the proposed process is simple and cost-effective. Although the results presented in this letter are promising, further research is necessary to fully assess the benefits and limitations of the process.
The sound absorption property of a multilayered aluminum foam structure was investigated at present work. The absorption coefficients of the structure were measured by the transfer function method. Based on the equivalent fluid model, a theoretical model for the multilayered structure was presented. Compared with the experiment, the theoretical sound absorption coefficients of the multilayered structure were consistent with experimental values. The theoretical model is suitable for evaluating the sound absorption characteristics of the multilayered structure. Furthermore, the experiment and theory show the multilayered structure has an excellent absorption characteristic because of its series multi-resonance structure. And the best acoustic absorption characteristic of the multilayered Al foam structure can be obtained by adjusting the structural parameters.
The use of metal foam continues to grow up in terms of research and application also in electromagnetic environment, such as shielding applications. Considering these new applications an analytical 3D model of metal foams (3D wire-mesh screens) is developed and discussed in this paper to characterize electromagnetic shielding behaviour. More specifically, the electromagnetic characterization has been considered, and experimental shielding effectiveness (SE) measurements have been performed. This 3D model, allow the design of metal foams EM shields, showing good agreement results between this model, some prototype of this model, and metal foams.
Sound absorption characteristic of the compound aluminum foam was investigated in this paper. The absorption coefficient of the foam was measured in different conditions by the transfer function method. Compared with the single aluminum foam, the compound aluminum foam shows a significant improvement in sound absorption if the single foam and the compound foam have a same thickness of sample and depth of air-gap. The effect of structural parameters of the compound aluminum foam on the sound absorption performance is significant. And there is a reasonable structural configuration makes the acoustic properties of the compound aluminum foam to the optimal in the usual noise frequencies area. The sound dissipation mechanisms in the compound foam are principally viscous and thermal losses when there is no air-gap backing and double-resonators resonant absorption predominantly when there is an air- gap backing.
Metal foams are used extensively in civil and mechanical engineering applications. However the behaviuor of metal foams under various loading conditions are not well understood. Therefore this study investigates nonlinear behaviour of metal foams under tensile loading using finite element method. The metal foams were modelled using the available Abaqus finite element formulation. Previous experimental results of uniaxial tension behaviour of metal foams were taken to validate the numerical results. In particular, the stress-strain variations were obtained from the numerical model and compared with the experimental results. Agreeable match between experimental and numerical was found.
In this paper we investigate, on the basis of an ldquoeffective medium approachrdquo, the use of metal foams for electromagnetic shielding solutions. In more details, a shielding effectiveness analysis has been performed by modeling metal foams as a homogeneous medium that shows the dispersion profile of a plasma. The suggested approach is experimentally validated demonstrating that metal foams behave like a plasma medium whose plasma frequency is in the microwave range. The implementation of the proposed effective medium approach has been developed in a proprietary full-wave simulator. Results demonstrate that, by using the plasma model, general electromagnetic analysis of metal foams can be accurately performed with reasonable computational efforts.
Metal foams are highly versatile new materials with interesting structural and electromagnetic properties. In this work, their use in electromagnetic shielding problems is investigated. More specifically, the shielding effectiveness of an aluminium foam slab is studied on the basis of an effective medium approach. Furthermore, the suitability of using a plasma model in order to describe the electromagnetic behaviour of metal foams is demonstrated by comparison with experimental data.
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