A Wide-Frequency Model of Metal Foam for Shielding Applications

Losito, O.; Barletta, D.; Dimiccoli, Vincenzo

doi:10.1109/temc.2009.2035109

Cited by 24 publications

(7 citation statements)

References 4 publications

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“…Multi-physics properties of metallic foams such as: lower thermal conductivity [14], vibration attenuation [15], sound absorption [16], fluid flow through open cells [15], fire resistance [17], electromagnetic [18] and radiation [19] shielding give metallic foams an advantage over conventional materials with comparable structural characteristics. There is great potential for multi-functional applications, though such designs require more sophisticated analysis methodologies.…”

mentioning

confidence: 99%

The mechanical properties and modeling of a sintered hollow sphere steel foam

Szyniszewski

Smith

Hajjar

et al. 2014

Materials & Design (1980-2015)

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mentioning

confidence: 99%

The mechanical properties and modeling of a sintered hollow sphere steel foam

Szyniszewski

Smith

Hajjar

et al. 2014

Materials & Design (1980-2015)

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“…A numerical approach based on Weilands finite integration technique (FIT, [7]) has been proposed by Zhang et al [8] to compute the (frequency, thickness and angle of incidence dependent) reflection coefficient of SiC reticulated foam, and optimize its design. A simplified model, consisting of stacked square-mesh grids has been used by Losito et al [9], [10] to investigate the RF shielding properties of metallic foams. The main limitation of Zhang's analysis is in the use of a simple body-centered-cubic unit-cell foam model, for easiest numerical implementation.…”

Section: Electrical Properties Of Metallic Foamsmentioning

confidence: 99%

“…Typical values (from LHC) of the parameters in (9) are collected in Table II below [20]. The equilibrium molecular densities in (9) should not exceed some critical values for safe operation [20].…”

Section: Vacuum Issuesmentioning

confidence: 99%

Open Cell Metal Foams for Beam Liners?

Croce,

Petracca,

Stabile

2013

Preprint

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“…Metal foam, which was developed recently, is a new type of structural and functional material that possesses excellent mechanical properties, such as a low weight, high specific stiffness, outstanding energy absorption, shock absorption, thermal conductivity, sound absorption, and electromagnetic shielding. [1][2][3][4][5][6] Therefore, it has attracted much attention and is used in electromagnetic shielding, phase change energy storage, high damping composite materials, and other fields; [7][8][9][10][11] however, its application in the field of tribology research has not been previously explored.…”

Section: Introductionmentioning

confidence: 99%

Tribological behaviors of foamed copper/epoxy resin composites augmented by molybdenum disulfide and multi-walled carbon nanotubes

Huang

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part J:

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A novel foamed copper/epoxy (FCE) composite possessing improved wear resistance was developed as a rubbing pair material. The composites consist of an open-cell foamed copper skeleton and an epoxy resin and auxiliary additives, such as molybdenum disulfide (MoS2) and multi-walled carbon nanotubes (MWCNTs). A universal UMT-2 friction and wear tester was utilized to study the tribological properties of the FCE composites under dry lubrication conditions. We found that the amount of MoS2, the porosity of the copper foam, and the presence of the MWCNTs all have an effect on the friction and wear properties of the composite materials. The friction coefficient of the composite material gradually decreases as the amount of MoS2 increases; however, the wear rate initially decreases and then increases. When the MoS2 content is 30%, the wear rate reaches a minimum. The wear rate decreases as the porosity of copper foam decreases, but porosity has little effect on the friction coefficient. As the rotation speed of the grinding steel plate and the applied load on samples increase, the wear becomes more significant. The presence of MWCNTs also increases the strength and wear resistance of the epoxy resin matrix. Depth-of-field microscopy and scanning electron microscopy were employed to observe the worn-surface morphologies and wear mechanism. The worn surface of the FCE composite matrix is divided into three parts: the hollow metallic copper skeleton region, the polymer zone, and the transition zone copper skeleton that contains some polymer material. It is important to note that the wear mechanism of the various compositions is adhesive wear and slight abrasive wear, and the fatigue crack that runs perpendicular to the direction of movement begins to form at higher speeds, which results in a higher wear rate.

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A Wide-Frequency Model of Metal Foam for Shielding Applications

Cited by 24 publications

References 4 publications

The mechanical properties and modeling of a sintered hollow sphere steel foam

The mechanical properties and modeling of a sintered hollow sphere steel foam

Open Cell Metal Foams for Beam Liners?

Tribological behaviors of foamed copper/epoxy resin composites augmented by molybdenum disulfide and multi-walled carbon nanotubes

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