Concept

Shape-memory polymer

Publications associées (80)

Isothermal recovery rates in shape memory polyurethanes

John Christopher Plummer, Charly David Azra

This work compares the time dependence of isothermal shape recovery in thermoset and thermoplastic shape memory polyurethanes (SMPUs) with comparable glass transition temperatures. In each case, tensile tests have been used to quantify the influence of var ...

2011

Electrical properties and applications of carbon based nanocomposite materials: An overview

Arnaud Magrez, Rosendo Sanjines, Marijana Mionic Ebersold, Rita Smajda

The allotropic forms of carbon (amorphous and polycrystalline graphite, carbon black, fullerenes, nanotubes, graphene) exhibit a large variety of charge transport properties which have been stimulating fundamental and applied research for the development o ...

2011

Internal Friction Phenomena at Polymeric and Metallic Shape Memory Materials. Experimental and Theoretical Results

Maria-Alexandra Paun

The internal friction phenomenon in metallic and polymeric shape memory materials is analyzed. The experimental results permit validation of a theoretical model which describes qualitatively the temperature dependence of the internal friction for the inves ...

2010

Yield surface of polyurethane and aluminium replicated foam

Andreas Mortensen, Raphaël Charvet, Etienne Combaz, Willy Dufour, Claudio Bacciarini

It has been proposed in the literature, based on theoretical considerations and on finite-element calculations, that all three stress tensor invariants govern the yield surface of cellular materials. Recent experiments on 75 gm pore size aluminium replicat ...

Elsevier2010

Interaction between Bond and Deviation Forces in Spalling Failures of Arch-Shaped Members without Transverse Reinforcement

Aurelio Muttoni, Miguel Fernández Ruiz, Sylvain Plumey

This paper investigates the structural behavior of reinforced concrete (RC) arch-shaped members without transverse reinforcement subjected to bending. Such members have typical applications in tunnels, cut-and-cover structures, shells, vaults, ducts, silos ...

ACI Structural Journal2010

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

Micromechanics and damping properties of composites integrating shear thickening fluids

Pierre-Etienne Bourban, Razvan Cristian Neagu

Damping is an important parameter for vibration control, noise reduction, fatigue endurance or impact resistance of composite materials. In this study, a micromechanical model was used to predict the damping of a composite material containing shear thicken ...

2009

Micromechanics of creep and relaxation of wood. A review COST Action E35 2004-2008: Wood machining - micromechanics and fracture

Parviz Navi

Wood, like all polymeric materials, shows viscoelastic behaviour. The time dependent behaviour of wood depends on material anisotropy, temperature, moisture and stresses. To predict the behaviour of wood, numerous mathematical models have been developed la ...

De Gruyter2009

Monitoring of process induced strains in a single fibre composite using FBG sensor: A methodological study

John Botsis, Joël Cugnoni, Dimitrios Karalekas

A partially embedded long fibre-Bragg grating (FBG) into an epoxy cylindrical specimen is used to monitor the strain distribution evolution along its axis when subjected to subsequent cycles of thermal ageing at 70 and 110 degrees C. Assuming a total volum ...

2008

Mechanics of Thin Films on Polymer Substrates Produced by Roll-to-Roll Manufacturing

Yves Leterrier, Luc Rougier

lexible electronic devices are currently being developed using polymer substrates. Such devices present advantages like conformability, are light-weight and are expected to be manufactured in roll-to-roll (R2R) schemes accounting for cost-reduction. These ...

2008

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