Saint-gobain Centre De Recherches Et D'etudes Europeen

Matthieu Graveleau

Alexane Margossian

Vincent Gleize

Gilles Rossiquet

Jérôme Brulin

Mickael Boinet

Nandi Subhasis

Ghosh Bismit

Hemanth Kumar Pattem

Jerome Brulin

Anti-ballistic armor element, comprising a ceramic body comprising a sintered material consisting of ceramic grains with a Vickers hardness of more than 5 GPa, the total pore volume of said material being between 0.5 and 10%, said ceramic body being characterized in that the cumulative volume of pores with a diameter of between 30 and 100 micrometers represents between 0.2 and 2.5% of the volume of said material, the cumulative volume of pores with a diameter of more than 100 micrometers is less than 0.2% of the volume of said material, the remainder of said total pore volume consisting of pores whose diameter is less than 30 micrometers.

Ceramic armor with controlled pore size dispersion

An armor component and manufacturing thereof which includes a ceramic hard material, where the hard material has a bulk density that is lower than 3.5 g/cmand includes grains of ceramic material having a Vickers hardness that is higher than 15 GPa, bonded by an bonding matrix, the bonding matrix representing between 20 and 80% by weight of the constituent hard material of the ceramic body, and including alumina, silicon nitride and TiCNcrystalline phases, wherein x is included between 0 and 1.

Armor component comprising a titanium carbonitride phase

A device that includes a piece of armor made from a material that has a domain of plastic deformation under bad before breaking and an elastic deformation domain. The plastic deformation domain represents less than 1% of the elastic deformation domain. The device includes a deformation sensor fixed to the piece of armor and configured to deform plastically under the effect of at least a stress applied to the piece of armor and leading to damage of the piece of armor.

Device for checking armor

A screening element in the form of a sintered monolithic body has an outer face and an opposing inner face with an area of the faces greater than 100 cmand the mean thickness Ebetween the faces greater than 4 mm. At least a portion of the outer face is textured such that Ai decreases from the inner face from a value of i greater than at least 50, A≥0.2×Aand A<0.9×A, 0.03×A<A<0.5×Aand A<0.1×A. Ai being the area occupied by the material alone along a plane i of internal section at the intermediate thickness Eand i corresponding in percentage to the fraction of the mean thickness Eat plane i.

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AVIGNON, France

Matthieu Graveleau