Archives par mot-clé : Materials

What is tribology?

tribology

The science of friction: this is the definition of tribology. Tribology is a focal point shared by several disciplines and an important field of study for industrial production. Far from trivial, friction is a particularly complex phenomenon. Christine Boher, a tribologist at IMT Mines Albi[1], introduces us to this subject.   …

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The world’s oldest building material is also the most environmentally friendly

earth

The original version of this article was published on The Conversation.  By Abdelhak Maachi and Rodolphe Sonnier, IMT Mines Alès. Despite the recommendations of IPCC experts, who in 2018 recommended that greenhouse gas emissions be reduced by 40 to 70% by 2050 in an attempt to limit the impacts of the climate …

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I like this, I don’t like that

tactile perception

We like the soft feel of a cat’s fur, but we don’t like mud, which is slimy, nearly as much. Why is this? We are told that everyone’s tastes are different. But that does not keep scientists from trying to find answers. Jenny Faucheu, a researcher at Mines Saint-Étienne, has …

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Recovering knowledge of local, traditional building materials

building

Why is an old country farmhouse more pleasant in summer than a modern city building? Traditional building materials and natural stone provide old buildings with better thermal and hygrometric properties. Unfortunately, they often lack the technical characterizations they need to find their place in the construction industry. The European regional …

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Polybioskin, natural skin through more ethical products

Polybioskin

Skin contact products, whether for medical, sanitary or cosmetic purposes, have two major drawbacks: they are neither recyclable nor biodegradable. The Polybioskin H2020 project aims to correct these aspects which are out of step with consumers’ growing environmental awareness and concerns. Launched two years ago, the Polybioskin project brings together …

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Romain Quey, all about polycrystals

Romain Quey

A recent winner of a CNRS Bronze medal, Romain Quey is a materials science researcher at the Georges Friedel[1] laboratory at Mines Saint-Étienne. He focuses especially on the deformation of metallic polycrystalline materials. In the following interview for I’MTech, he presents his research, between synchrotron radiation and digital simulation.   …

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Recycling carbon fibre composites: a difficult task

carbon fibre

Carbon fibre composite materials are increasingly widespread, and their use continues to rise every year. Recycling these materials remains difficult, but is nevertheless necessary at the European level for environmental, economic and legislative reasons. At IMT Mines Albi, researchers are working on a new method: vapo-thermolysis. While this process offers promising …

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In search of forgotten cements

cements

Out of the 4 billion tons of cement produced every year, the overwhelming majority is Portland cement.  Invented over 200 years ago in France by Louis Vicat — then patented by Englishman Joseph Aspdin —Portland is a star in the world of building materials. Its almost unparalleled durability has allowed …

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Sand, an increasingly scarce resource that needs to be replaced

sable, sand

Humans are big consumers of sand, to the extent that this now valuable resource is becoming increasingly scarce. Being in such high demand, it is extracted in conditions that aren’t always respectful of the environment. With the increasing scarcity of sand and the sometimes devastating consequences of mining at beaches, …

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Fighting fire: from ancient Egypt to Notre-Dame de Paris

feu, fire

Article written in partnership with The Conversation France. By Rodolphe Sonnier, IMT Mines Alès. This article was co-authored by Clément Lacoste (IMT Mines Alès), Laurent Ferry (IMT Mines Alès) and Henri Vahabi (Université de Lorraine). The discovery of fire is often cited as the most important discovery in the history …

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