General facilities / Shocks table
Facilities
Modern pyrotechnic test facilities are available in Aquitaine and Les Mureaux establishments to test equipment or assemblies containing inert or active pyrotechnic components.
A shock table allows verification of the ability of tested equipment to withstand the mechanical environment and to operate under pyrotechnic generated shocks simulating real conditions (measurements up to 250 000 g). Thus, it is possible: to characterize generated pyrotechnic shocks, and to qualify equipment to simulated shock levels. Mesurements up to 250 000 g.
Services
- Test predictions calculation.
- Global test management and implementation of qualification tests to pyrotechnic shocks with orresponding measurements (metal or composite structures.)
- Test report including structural shock propagation measurements and shock responses spectrums.
- Pyrotechnic training :
-on site.
-pyrotechnic safety audits.
Features / technical details
General facilities
- Test room with 3 firing units
- Test area surrounded with earth works
- 4 vacuum chambers from 120 l to 175 m^3, pressure from 5.10-2 to 1.10-5 millibars
- 4 pressurization chambers up to 250 bars
- 2 tests benchs
- Associated measurements and trajectography by digital cameras means
- 4 firing means
- 2 rapid pressurization/ depressurization chambers (100ms from 18 bars to 1 bar)--> refer to data sheets concerning Static & combined thermo-static tests Rapid external pressurization/ depressurization chambers
Shock table performance
Tests means
- Dimensions
-Table: 900 x 900 mm
-Effective Area: Diameter 600 mm
-Maximum mass: 60 kg
-Dimensions can be adapted according to the specimen to be tested (if > 60 kg or dimensions > 600 mm).
- Shock response spectrum in severity zone defines the performances level.
- Constitution
-an upper plate linked to a test table by means of a damping system,
-a pyrotechnic generator
Acquisition & dataprocessing
- Environment: Acceleration data acquisition system, large frequency range 100 kHz and 400 kHz, up to 250 000 g, adapted to the tests severity.
- Functional Measurements: Digital recording FrequencyRange 0 - 500 kHz (grounding continuity, isolation, pyrotechnic surveillance, micrometer displacement).
- Processing: Sampling Frequency up to 10 MHz. Computerised Data processing, analogical visualisation, shock response spectrum, Fourier analysis...
