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The influence of internal stresses on the microbond test 1 : Theoretical analysis

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Numerical modelling and strength prediction of welded double lap joints made of timber

Yves Weinand, Till Vallée, Bernhard Stamm, Benjamin Hahn

Welding of wood is a relatively new method of joining load bearing elements, which holds the potential to compete with structural adhesion, since it allows for an almost instantaneous bond. First experimental and numerical investigations showed that failur ...

Elsevier Ltd. Selection2011

Determination of depolarization temperature of (Bi1/2Na1/2)TiO3-based lead-free piezoceramics

Dragan Damjanovic

The depolarization temperature T-d of piezoelectric materials is an important figure of merit for their application at elevated temperatures. Until now, there are several methods proposed in the literature to determine the depolarization temperature of pie ...

American Institute of Physics2011

Forces exerted by a correlated fluid on embedded inclusions

Anne-Florence Raphaëlle Bitbol

We investigate the forces exerted on embedded inclusions by a fluid medium with long-range correlations, described by an effective scalar field theory. Such forces are the basis for the medium-mediated Casimir-like force. To study these forces beyond therm ...

American Physical Society (APS)2011

The present work investigates the saturation damage state of a two-layer coating on a substrate (layer 1/layer 2/substrate) under uniaxial tensile loading in order to derive expressions for the interfacial strength between layer 1 and layer 2, and between ...

Elsevier2010

The behaviour of brittle matrix fibre reinforced-composites is dependent of the properties of its constituents (fibre, matrix and fibre-matrix interface) and is affected by the mechanical and environmental loads. The fracture of a unidirectional composite ...

EPFL2009

Failure in multiphase geomaterias

Lyesse Laloui

The contributions assembled in the present volume proceed from the lectures of the 2009 ALERT Geomaterials School devoted to the Failure in the multiphase geomaterials. The multiphase behaviour of geomaterials used to be mainly considered from the point of ...

2009

An axisymmetric stress analysis in a single fibre composite of finite length under a thermal expansion mismatch

John Botsis, Laurent Humbert, Fabiano Colpo

In this paper, an exact solution is derived for the characterization of thermal stresses in a single-fibre composite of finite length. All the required boundary and interfacial conditions of the thermo-elastic problem are thus satisfied exactly. The propos ...

2009

Tailored processing of epoxy with embedded shape memory alloy (SMA) wires

Véronique Michaud, Eva Kirkby, Julie O'Keane

We present the development of a low-temperature liquid composite moulding cure schedule that is compatible with the fabrication of shape memory alloy (SMA)–epoxy composite materials. With this process, the SMA wires do not need to be maintained in place wi ...

2009

Molecular Dynamics Simulations of Interfacial Sliding in Carbon-Nanotube/Diamond Nanocomposites

William Curtin

Molecular dynamics simulations are reported for the pullout force and interfacial friction of single-and multiwall carbon nanotubes (CNT) with interwall sp(3) bonds embedded in a diamond matrix. The van der Waals interaction and sp(3) bonding are shown to ...

2009

Analyse de l'état de contrainte et de l'endommagement d'assemblages sertis en matériau mixte métal-composite sollicités en traction ou en flexion

Alain Michel Prenleloup

The constant improvement of polymer composite materials has allowed their integration in many industrial fields where their mechanical and chemical properties are apparently attractive. Mixed metal-composite insulators are now increasingly used for high vo ...

EPFL2008