SNPE Matériaux Energétiques: Assessing and consulting

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Technology value unit

The purpose of this unit is to enhance SNPE Matériaux Énergétiques know-how, skills, technologies and facilities, based on the Research and Technology Division teams at Le Bouchet and Saint Médard-en-Jalles.

"Technology Value Unit" activities are varied owing to expertise acquired in numerous subjects:

Assessments and consulting

Regardless of your activity (aeronautics, automobile, energy, electronics, chemistry, etc.), SNPE Matériaux Énergétiques, with its Le Bouchet (Essonne, Paris area) and Saint-Médard-en-Jalles (Gironde, South-West France) sites, offers you its skills in the field of energetic materials and its technical expertise to secure your projects.

Our offer includes:

Consulting to meet your technical specifications

Special assessments on hazardous items or products:

• Mechanical and thermal stress (intensity of impact or reaction). This stress may be combined with modeling
• Physical, chemical and mechanical characterization of liquid and solid materials
  
  
  
  
• Characterization - Assessment
  - Solid materials
  - Polymers
  - Liquids
  - Internal fault location
  - Physical analysis of internal faults
  - Particle image velocimetry
  
  
  
  
• Mechanical characterization
  - Pressure effect measurement
  - Geometric measurement of porosity and compressibility
  - Dynamic compression
  - High strength capacity dynamometer (60 t)
  - High speed dynamometer (TGV)
  - Porosity and volume variation measurement
  
  
  
  
  
• Mechanical stress
  - Weak shocks: material fragility
  - Weak shocks – Strong shocks
  - High pressure mechanics: electronic and optical measurement
  - High pressure mechanics: extremely rapid display
  
  
  
• Thermal stress
  - LASER bench
  - Reaction intensity and kinetic measurement with modeling
  
  
  
  
• Test facilities – Industrial scale
  - Characterization of gas flow with or without combustion
  - Operation of a system submitted to sudden pressure drop
  

Contact: Gilles Gonthier

Environmental tests

SNPE Matériaux Energétiques Saint-Médard-en-Jalles (Gironde, South-West France) site is equipped with high-performance environmental test facilities which are implemented with acknowledged skills.
With more than 30 years of experience at the service of French national defense, our teams have long provided test services to industrialists from aeronautics, nuclear and automobile sectors and offer global services:

• Test specification processing based on international standardization (MIL STD 810, GAM EG 13, etc.)
• Customized test severity definition
• Design and creation of tools for the interface between tested equipment and test facilities
• Instrumentation and measurement processing
• Implementation of:
  - acceleration means
  - high frequency vibration means
  - low frequency vibration means
  - shock – jerk means
  - modal analysis means
  - climatic test means
  - pyromechanism test means
  - rapid phenomenon acquisition means
  - steering and acquisition means

Equipment tested can be checked at different stages of its qualification with our X-ray and endoscopic installations.

Our installations allow tests on cumbersome and heavy equipment (up to several tons) and hazardous equipment (pyrotechnic: class 1.1, pressurized, etc.). They enable simultaneous mechanical and climatic tests.

Contact: André Pennec

Non-destructive tests

SNPE Matériaux Energétiques Saint-Médard-en-Jalles site has high-performance, non-destructive test facilities (CND) that meet a wide range of requirements, notably in the field of X-rays and tomography.

• X-rays
• Radioscopy
• Tomography
• Video endoscopy

They are used by skilled operators (Camari, Cofrend/Cosac level II) able to analyze images and graphs.

Contact: Régis Darche

Calculation – Digital simulation

Research and Technology Division teams have specialists and calculation means that enable them to offer services in the following fields:

• Dynamic, mechanical and thermal dimensioning of complex systems (ESM)
• Dynamics of highly damped systems => link to example sheet
• Modeling and simulation of complex material behavior => link to example sheet
• Simulation of complex diffusion kinetics => link to example sheet
• Special FEM technique => link to example sheet
• Aerodynamics (CRB + ESM) => link to example sheet
• Rapid and detonic dynamics (CRB) => link to example sheet
• Thermochemistry of reactive systems (ESM) => link to example sheet

"Mechanics" software programs: ABAQUS Explicit, ABAQUS STANDARD (implicit), ABAQUS CAE, PATRAN, NASTRAN, MARC, MATLAB, CATIA

"Dynamics" software programs: DYNA

Portfolio of special programs developed by SNPE Matériaux Energétiques.

Contact: Régis Darche