Concept

Dilatation thermique

Publications associées (299)

Picosecond dynamics of laser-induced strain in graphite

We report on the use of grazing-incidence time-resolved x-ray diffraction to investigate the evolution of strain in natural graphite excited by femtosecond-laser pulses in the fluence range of 6-35 mJ/cm(2). Strains corresponding to up to similar to 2.8% c ...

2011

RedOx Stability of Anode Supported Solid Oxide Fuel Cells

Antonin Faes

The weakness of nickel-based solid oxide fuel cell anodes is their low ability to withstand re-oxidation at working temperature, especially for the anode-supported cell design. The volume expansion coming along with nickel (Ni) oxidation induces stresses i ...

EPFL2011

A novel tethered-sphere add-on to enhance grid turbulence

Peter Monkewitz, Richard Vonlanthen

The new turbulence generator consists of a standard uniform grid with tethered spheres attached to its nodes and is capable of producing approximately twice the turbulence energy per unit pressure drop coefficient C (p) than the same bare grid without the ...

Springer-Verlag2011

Modelling the effect of temperature on crack onset strain of brittle coatings on polymer substrates

Yves Leterrier, Laure Dupuits Lalande, Judith Helen Waller

The effect of temperature on the crack onset strain (COS) of brittle coatings on polymer substrates was investigated through a series of temperature-controlled tensile tests carried out in situ under an optical microscope. It was observed that the failure ...

Elsevier2011

Thermal variability of the internal friction in clay in a cylindrical thermo-mechanical problem

Lyesse Laloui, Bertrand François

Variability of the internal friction angle with temperature is studied in a boundary value problem numerically simulating the impact of a cylindrical heat source on the stress and strain in soil mass in which it is emplaced. Even if the thermal increase of ...

International Center for Computational Engineering (IC2E)2011

Temperature-dependent internal friction of clay in a cylindrical heat source problem

Lyesse Laloui, Bertrand François

The effect of the temperature dependence of the internal friction angle is studied in a boundary value problem simulating the impact of a cylindrical heat source on the soil mass in which it is embedded. This follows a previous study which shows that such ...

2011

Experimental study of velocity fields in rectangular shallow reservoirs

Anton Schleiss, Erica Camnasio

Velocity fields in rectangular shallow reservoirs with different length-to-width and expansion ratios were investigated in an experimental study, to evaluate the effect of geometry on the flow field. A wide range of combinations of these two non-dimensiona ...

2011

Residual Stresses in DC cast Aluminum Billet: Neutron Diffraction Measurements and Thermomechanical Modeling

Jean-Marie Drezet

Thermally-induced residual stresses, generated during the industrial Direct Chill casting process of aluminum alloys, can cause both significant safety concerns as well as the formation of defects during down-stream processing. Although these thermally ind ...

Amer Inst Physics, 2 Huntington Quadrangle, Ste 1No1, D, Melville, Ny 11747-4501 Usa2011

Site-Specific CO2 Adsorption and Zero Thermal Expansion in an Anisotropic Pore Network

Wendy Lee Queen

Detailed neutron powder diffraction (NPD) expts. were carried out on the parent and CO2 adsorbed Mg-MOF-74 (MOF: metal-org. framework). Data collected at low temp. revealed two CO2 adsorption sites on the pore surface and multiple changes in the framework ...

2011

Transition Slabs of Integral Abutment Bridges

Aurelio Muttoni, Olivier Burdet, Damien Dreier

Over the past decades, an increasing number of bridges with integral abutment have been built in Switzerland. This type of bridge offers various advantages over standard bridges with abutments, equipped with expansion joints and bearings that require regul ...

Structural Engineering International2011

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