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Elasto-Dynamic Behavior of a Two-Dimensional Square Lattice With Entrained Fluid II: Microstructural and Homogenized Models

Alessandro Spadoni, Vladimir Dorodnitsyn

This paper presents a detailed study of the pressure waves and effective mechanical properties of a closed-cell cellular solid with entrained fluid. Plane-harmonic-waves are analyzed in a periodic square with a finite-element model of a representative-volu ...

Asme2014

Impact properties of shear thickening fluid impregnated foams

Véronique Michaud, Mathieu Soutrenon

Concentrated colloidal suspensions of silica particles in polyethylene glycol exhibit a shear thickening behavior: above a critical shear rate in a confined environment, they show a steep increase of viscosity. This reversible transition from a low to a hi ...

Institute of Physics2014

Creep behaviour of sandwich panels with rigid polyurethane foam core and glass-fibre reinforced polymer faces: Experimental tests and analytical modelling

Thomas Keller, Mário Alexandre De Jesus Garrido

This paper presents experimental and analytical investigations about the creep behaviour of sandwich panels comprising glass-fibre reinforced polymer faces and rigid polyurethane foam core for civil engineering applications. A full-scale sandwich panel was ...

SAGE Publications2014

Pore-level engineering of macroporous media for increased performance of solar-driven thermochemical fuel processing

Sophia Haussener, Aldo Steinfeld, Silvan Suter

The performance of high-temperature solar reactors incorporating porous ceramic materials that serve as radiative absorbers and chemical reaction sites can be improved significantly by tailoring their pore structure. We investigated the changes in their ef ...

Elsevier2014

EPB tunneling challenges in bouldery ground: a new experience on the Tabriz metro line 1, Iran

Jian Zhao

Underground construction of the Tabriz metro line 1 involved boring twin tunnels with two earth pressure balance machines in alluvial deposits. Although this type of machine is recommended for excavation in fine soils, its performance was evaluated in this ...

Springer Verlag2014

Synthesis of bone-like structured foams

Sandrine Gerber, Françoise Borcard

Here we present a processing route to produce multi-structured ceramic foams based on the combination of particle-stabilized foams with polymeric sponges to produce positive and negative templating structures. Polyester sponges are infiltrated with freshly ...

Elsevier Sci Ltd2013

Extremely robust and conformable capacitive pressure sensors based on flexible polyurethane foams and stretchable metallization

Stéphanie Lacour, Douglas Cameron Watson, Hugues Vandeparre

Microfabricated capacitive sensors prepared with elastomeric foam dielectric films and stretchable metallic electrodes display robustness to extreme conditions including stretching and tissue-like folding and autoclaving. The open cellular structure of the ...

American Institute of Physics2013

Effect of soluble surfactant on bubble persistence and bubble-produced aerosol particles

Robin Lewis Modini

The effect of soluble surfactant on the persistence of salt-water bubbles and their ability to produce aerosol particles upon bursting was investigated. Ensembles of individual, millimetric bubbles were produced in NaCl solutions of varying surfactant conc ...

Amer Geophysical Union2013

On the load-bearing efficiency of open-cell foams: A comparison of two architectures related to two processes

Andreas Mortensen, Andreas Rossoll

Using a simple beam element, this study estimates the elastic stiffness of two isotropic open-cell foam architectures that approximate, respectively, the space between tightly packed fluid bubbles and that defined between densified solid particles, and fin ...

Elsevier2013

The plasticity size effect in replicated microcellular aluminium

Andreas Mortensen, Jean-François Despois

Microcellular aluminium can be produced by replication in porous material with pores across a wide range of sizes but with otherwise identical structures. Compressive tests reveal a plasticity size effect, with samples showing higher strengths and higher r ...

Elsevier2013

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