| The
Teams |
| The Equipe Structure et Comportement
Thermomécanique des Matériaux (ESCTM, the structure
and thermomechanical behaviour of materials team) has six full-time
researchers or teacher scientists, four doctoral candidates and
two post-doctoral candidates. The team works with the teams at
the CRISMAT and LCMT in Caen. It also is involved in the 'Polymer
Materials, Plastic Processing' networks and works on many national
and European projects. |
| |
|
| Equipments |
| In addition to the microscopy
equipment listed in the equipment chapter of the hub, the following
equipment is also used: |
 |
Two sintering furnaces (including one neutral atmosphere
furnace) |
|
Equipment for metallographic preparation, optical
microscope, scanning electron microscope with analysers, high-resolution
electronic microscope with analysers, and image processing systems |
|
Three electromechanical traction-compression machines
(100kN capacity), a compression system (2MN capacity), a hydraulic
machine equipped with an air-conditioned chamber (temperatures
ranging from minus 70°C to plus 230°C), a drop-weight
shock-test machine (0.5 to 530 Joules), hardness test-bench, two
acoustic emission analysis chains, a thermal shock test-bench |
| |
|
| Methods |
| The team's work focuses on the following
types of materials: |
|
Structural ceramics (such as clay- or plaster-based,
carbide, oxide or nitride ceramics) |
|
Functional ceramics (dielectric, semi-conducting,
and superconducting ceramics) |
|
Porous materials (ceramics, metals, and glass) |
|
Fibre composites (cement-glass, reinforced plaster,
and reinforced polymer) |
| The equipment can develop
porous materials, characterise the structure of materials, and
study their thermomechanical behaviour under quasi-static or static
stress, or dynamic structural loading. |
|
Development of (metallic or ceramic) sintered materials
while controlling porosity - Example: bronze filters |
|
Qualitative structural analysis (type, phase localisation,
study of the grain boundary using high-resolution electronic microscopy)
- Examples: fibre-matrix interface analysis in cement-glass composites
or study of interfaces in GaN-type semiconductors |
|
Quantitative structural analysis (content, spatial
breakdown and organisation of the different phases using the tools
of topology, stereology, and mathematical morphology) - Examples:
description of the porous structure of ceramic substrates for
nanofiltration |
|
Study of how mechanical damage starts and spreads
in different loading modes (pure bending, buckling, uniaxial traction,
and compression) and types of stress (static and monotone stress,
and dynamic structural loading) - Examples: polyamide composites-glass
fibre shocks |
|
Material reliability (durability, resistance to
cracking, Weibull module) - Examples: nanofiltration substrates |
|
Heat transfer during hardening and resistance to
thermal shock - Examples: heavy or porous materials in water,
silicon oil, or liquid nitrogen |
|
Detection and monitoring of the damage using acoustic
emission analysis |
| The thermomechanical behaviour
of the material can be interpreted with the micro-structural data,
hence enabling material optimisation |
| |
|
| Customer Companies
|
|
BPB Placo (constructions materials) |
|
CMEG (building and civil engineering) |
|
BENOIST GIRARD (medical prosthetic devices) |
|
MERITOR |
|
RHODIA |
|
SCHNEIDER ELECTRIC |
|
THALES |
|
VETROTEX |
| |
|
| Contacts |
| For general technological
or scientific information |
|
Mr. Moussa GOMINA
ISMRA - CRISMAT
Tél : 33 (0)2 31 45 26 59 - Fax : 33 (0)2 31 45 26 60
moussagomina@ismra.fr |
| |
|
| For economic or industrial
information |
|
Normandie Développement
57 avenue de Bretagne - BP 1083
76173 Rouen Cedex 1 - France
Tel : 33 (0)2 35 03 06 04 - Fax : 33 (0)2 35 03 07 86
ndrouen@normandydev.com |
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