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Strategies for energy-efficient frontal polymerisation processing and microstructural evaluation of fibre reinforced composites

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In urban areas, the use of thermal energy services is intensive and relatively heterogeneous by their nature, spatial distribution and temperature level required. In this study three concepts of district energy networks that could provide these services ve ...

2015

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The increase of the urban population and the climate change are issues that scientists and stakeholders are facing nowadays; in this optic a sustainable design should address buildings, and all the physical phenomena that interact with them, from the urban ...

Elsevier2015

Dynamic analysis of the low-temperature district network "Suurstoffi" through monitoring

Nadège Vetterli

The Lucerne University of Applied Sciences has been analysing and monitoring the low- temperature district heating and cooling network (LTN) “Suurstoffi” since 2012. The analysis showed that heating demand was twice as high as expected. On the other hand, ...

LESO-PB, EPFL2015

Damping of thermoset and thermoplastic flax fibre composites

Pierre-Etienne Bourban, John Christopher Plummer, Fabien Duc

The mechanical and damping properties of unidirectional (UD) and twill 2/2 flax fibre (FF) reinforced thermoset (epoxy) and thermoplastic (polypropylene (PP) and polylactic acid (PLA)) composites containing 40 vol% of fibres have been compared with those o ...

Elsevier Sci Ltd2014

Dynamic mechanical properties of epoxy/flax fibre composites

Pierre-Etienne Bourban, Fabien Duc

The mechanical and damping properties were measured for unidirectional, 0/90 and twill 2/2 flax fibre (FF) composites containing 40 vol% of fibres in an epoxy matrix. All composites were processed by resin transfer moulding. The influence of the impregnati ...

Sage Publications Ltd2014

This report presents a study of an enthalpy and exergy analysis in the framework of a district scale energy balance. Energy demand (heating, cooling and lighting) for buildings represents more than 30 % of the total worlds energy use. Main eﬀorts have been ...

2012

Epoxy-graphite Resistive Composites

Nathalie Sophie Adeline Serra

In this thesis, we proposed to study polymer-based thick-film resistors (TFRs) made of graphite particles dispersed in an epoxy matrix. Three main axes were investigated: formulation of the composites, characterization with the determination of electrical, ...

EPFL2012

Modeling the Impacts of Climate Change on the Energy Sector: a Swiss perspective

Marc Vielle, Camille Gonseth

When speaking of energy production and consumption in the context of climate change, the interest usually lies in mitigation policies and measures, i.e. the energy system is seen as an emitter of greenhouse gases. This paper takes a different approach and ...

2012

Economic and environmental assessment of alternative production methods for composite aircraft components

Véronique Michaud, Rémy Teuscher, Robert Andrew Witik, Fabrice Gaille

The use of carbon fibre reinforced plastics is steadily increasing in the aerospace industry as rising fuel costs and concerns over the environment push airframe manufacturers to improve aircraft efficiency. The high costs associated with manufacturing car ...

Elsevier2012

Dynamic saturation curve measurement for resin flow in glass fibre reinforcement

Véronique Michaud

A methodology is presented to determine the saturation curve of a resin/glass fabric system, during infiltration in a transparent mould under constant flow rate. Video acquisitions are transformed by image analysis into saturation level versus position and ...

2012