FRANÇAIS
|
 |
Technology Transfer
Ground Vibration Testing and Modal Survey
Applications
Airbus A340-500 GVT
Airbus A380-800 GVT
Helicopter scale model testing
>
Aeronautical, Wind Turbine, Automotive, Railways, Competition Sailing
-
Structural Dynamics & Modal Analysis:
- FE software updating assistance
- Flutter computation, Divergence
- Coupled multiphysics vibrations structural design.
Keywords
-
Ground Vibration Testing (GVT), Modal survey & analysis, Flutter and divergence computation.
Advantages
- Large range of state of the art Ground Vibration Testing (0,5 Hz - 4000 Hz) and ability to perform highly accurate modal surveys.
- Combination of advanced hardware technology, signal processing and vibration test strategies.
Testing
- Performance of various types of vibration tests.
- Combination of traditional Phase Resonance Method (Modal Tuning) and updated Phase Separation Methods to adapt the test productivity to the level of quality confidence.
- Specific methods including SPA method (Strain Pattern Analysis), vibro-acoustics, OMS (Operational Mode Shapes), rotating structures...
- Facilities include:
- Actuators : large variety of modal and seismic exciters (>30)
- Sensors : > 1000 accelerometers, 10 force transducers, 2 laser velocimetry devices, > 500 conditioners, ~200 strain gauges conditioners.
- Acquisition system : from 16 to 512 VXI channels, expandable to 1024 channels.
- Software : ONERA and standard software for Modal Analysis, Finite Element Model updating assistance and test preparation, Flutter computation.
- Ability to operate on customer facilities and on domestic test facilities (Paris, France).
Expertise
- Ground Vibration Testing & Modal surveys (0,5 Hz – 4000 Hz).
- Development of methodology, methods, equipments.
Customers
- Airbus, Eurocopter, Snecma, Dassault Aviation, Sagem, Casa, DGA CEV, Air France Industries, Socata.
|
 |
|
