Porous Metals and Metallic Foams: Current Status and Recent Developments

Lefebvre, Louis Philippe; Banhart, John; Dunand, David C.

doi:10.1002/adem.200800241

Cited by 718 publications

(309 citation statements)

References 83 publications

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“…The use of the metal mesh reinforced panels reduced the weight of the floors by 75% in comparison to conventional reinforced concrete decks [12]. Lefebvren et al [13], Banhart and Seeliger [11] and Smith et al [1] provide an extensive overview of current industrial applications of metallic foams.…”

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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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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“…Metal foams are made up of mesh pore and have a polyhedral shape exhibiting high specific surface area, low density, and large pore size, and have been widely used as catalyst support materials [27]. Roy et al developed a methane reforming reactor for hydrogen production with a Pd-Rh metal foam catalyst structure; they found that it demonstrated excellent catalyst stability and activity, and could be widely applied in the processing of solid oxide fuel cell [18].…”

Section: Introductionmentioning

confidence: 99%

Development of cylindrical laminated methanol steam reforming microreactor with cascading metal foams as catalyst support

Zhou

Wang

et al. 2017

Fuel

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Abstract:In this study, the cascading metal foams were used as catalyst supports for constructing a new type of cylindrical laminated methanol steam reforming microreactor for hydrogen production. The two-layer impregnation method was used to load the Cu/Zn/Al/Zr catalysts, and the ultrasonic vibration method was then employed to investigate the loading performance of metal foams with different types and thicknesses. Furthermore, the effect of the type of catalyst placement, pores per inch (PPI) and foam type on the performance of methanol steam reforming microreactor was studied by varying the gas hourly space velocity (GHSV) and reaction temperature. Compared with two other types of catalyst placement studied, the microreactor containing catalyst-loaded metal foams without clearance cascading (3×2) showed the highest hydrogen production performance. When the PPI of the metal foam was increased from 50 to 100, both the methanol conversion and the H2 flow rate gradually increased. Our results also showed that a microreactor with Cu foam as a catalyst support exhibits increased hydrogen production and higher stability than those of a microreactor with Ni foam.

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“…For a review of the various core topologies and manufacturing methods employed in the creation of periodic cellular structures the reader is referred to Wadley [24] and Lefebvre et al [25]. Many of these studies fielded the cellular material in a sandwich panel configuration whereby the deflection of the face sheets can be used as a metric for measuring energy absorption.…”

Section: Introductionmentioning

confidence: 99%

High resolution simulations of energy absorption in dynamically loaded cellular structures

et al. 2016

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Cellular materials have potential application as absorbers of energy generated by high velocity impact. CTH, a Sandia National Laboratories Code which allows very severe strains to be simulated, has been used to perform very high resolution simulations showing the dynamic crushing of a series of two-dimensional, stainless steel metal structures with varying architectures. The structures are positioned to provide a cushion between a solid stainless steel flyer plate with velocities ranging from 300 to 900 m/s, and an initially stationary stainless steel target. Each of the alternative architectures under consideration was formed by an array of identical cells each of which had a constant volume and a constant density. The resolution of the simulations was maximised by choosing a configuration in which onedimensional conditions persisted for the full period over which the specimen densified, a condition which is most readily met by impacting high density specimens at high velocity. It was found that the total plastic flow and, therefore, the irreversible energy dissipated in the fully densified energy absorbing cell, increase (a) as the structure becomes more rodlike and less platelike and (b) as the impact velocity increases. Sequential CTH images of the deformation processes show that the flow of the cell material may be broadly divided into macroscopic flow perpendicular to the compression direction and jetting-type processes (microki- Department of Engineering, University of Cambridge, Cambridge, UK netic flow) which tend to predominate in rod and rodlike configurations and also tend to play an increasing role at increased strain rates. A very simple analysis of a configuration in which a solid flyer impacts a solid target provides a baseline against which to compare and explain features seen in the simulations. The work provides a basis for the development of energy absorbing structures for application in the 200-1000 m/s impact regime.

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Porous Metals and Metallic Foams: Current Status and Recent Developments

Cited by 718 publications

References 83 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

Development of cylindrical laminated methanol steam reforming microreactor with cascading metal foams as catalyst support

High resolution simulations of energy absorption in dynamically loaded cellular structures

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