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The importance of monitoring and associated servitude

For the duration of the tests, from a few minutes to several months, the equipment under test can be continuously monitored: thermocouple, voltage, current, rotation speed, micro-power cuts,...

Our multiple servitudes (electric, hydraulic, pneumatic) and our expertise in the field of vibration, climatic and hydraulic allow us to carry out tests in the configurations of representative environments in normal or severe use.

 

 

Why go through the process of vibration qualifications?

Vibration tests are important for vehicles, products which will require transportation and equipment which will be subjected to vibration in their operating environments.
They cover a broad array of industrial sectors: cars, rail, military hardware, aeronautics, space, nuclear, telecoms and general commercial goods.

 

 

Vibration tests are covered by various

Industry standard

  • NF EN 60068-2-6 (sinusoidal vibrations)
  • NF EN 60068-2-27 (shocks)
  • NF EN 60068-2-64 (vibrations, broadband random)
  • ...

 

Product standards

  • CEI 61373
  • RTCA DO 160 / ED 14
  • MIL STD 810
  • STANAG
  • DEF STAN
  • ...

 

Tests specifications

  • AIRBUS
  • PSA ( B21....)
  • RENAULT (...)
  • ...

Our vibration testing facilities

Our vibration test capacities cover a huge range of frequencies: from 0.1 to 6,000 Hz, with force settings of 100 to 105,000 N.

 


  • Force: 105 000 (sinus and random) / 315 000 N (shocks)
  • Frequency range: 3 - 2700 Hz,
  • Maximum acceleration: 150 gn
  • Velocity sine peak: 3m/s
  • Displacement continous: 3 inches peak-to-peak (76.2 mm)
  • Max. load mass: 1800 kg
  • Horizontal LDS table: 1500 mm * 1500 mm
  • 1,7 m3 climatic chamber - heat, cold and humidity control - vertically associable
  • Control system and et acquisition chain: LDS, LMS, M+P, DCY with over 60 channels
  • 16 channels for conditioning VISHAY strain gages

  • Force: 71 000 N (sinus and random) / 142 000 N (shocks)
  • Frequency range: 3 - 2500 Hz
  • Maximum acceleration: 100 gn
  • Velocity sine peak: 2.0 m/s
  • Displacement continous: 2 inches peak-to-peak (50.8 mm)
  • Max. load mass: 900 kg
  • horizontal table 600 mm * 600 mm with HBT high pressure bearings
  • 1,0 m3 climatic chamber - heat, cold and humidity regulation - can be combined vertically and horizontally

  • Force: 81 000 N (sinus and random) / 162 000 N (shocks)
  • Frequency range: 5 - 300 Hz
  • Maximum acceleration: 100 gn
  • Velocity sine peak: 1.78 m/s
  • Displacement continous: 1 inches peak-to-peak (25.4 mm)
  • Max. load mass: 900 kg
  • Horizontal table 800 mm * 800 mm with TEAM high pressure bearings
  • 1,0 m3 climatic chamber - heat, cold and humidity regulation - can be combined vertically and horizontally

  • Force: 57 800 N (sinus) /  66 000N (random) / 198 000 N (shocks) 
  • Frequency range: 3 - 2500 Hz
  • Maximum acceleration: 140 gn
  • Velocity sine peak: 1.8m/s
  • Displacement continous: 2.5 inches peak-to-peak (63 mm)
  • Max. load mass: 700 kg
  • Horizontal LDS table: 600 mm * 600 mm with HBT high pressure bearings

  • Force: 35 000 N (sinus) /  33 000N (random) / 93 000 N (shocks) 
  • Frequency range: 3 - 2400 Hz
  • Maximum acceleration: 50 gn
  • Velocity sine peak: 1.5m/s
  • Displacement continous: 2 inches peak-to-peak (50.8 mm)
  • Max. load mass: 600 kg

  • Force: 26 000 N (sinus / random / shocks) 
  • Frequency range: 5 - 3000 Hz
  • Maximum acceleration: 126 gn
  • Velocity sine peak: 1.65m/s
  • Displacement continous: 2 inches peak-to-peak (50.8 mm)

  • Force: 100 N to 13 200 N (sinus / random / shocks) 
  • Frequency range: 3 - 6000 Hz,
  • Maximum acceleration: 120 gn
  • Velocity sine peak: from 1.0 m/s to 2.5 m/s
  • Displacement continous: from 0.75 inches to 2 inches peak-to-peak (50.8 mm)


For low-frequency tests requiring a significant displacement (vehicle body movement) or even to go down to 0.1Hz (marine tests), we have a set of electrohydraulic vibration generation.

  • Force: 32000 N (sinus / random / shocks)
  • Frequency range: 0.1 - 250 Hz,
  • Maximum acceleration: 15 gn
  • Velocity sine peak: 0.7 m/s
  • Displacement continous: 100 mm peak-to-peak


For very high frequency tests, it is necessary to use piezoelectric vibration generating means.

We have 2 generator sets of 4 kN and 30 kN covering a range from 1000 Hz to 10 kHz with a maximum displacement of 20µm peak-to-peak.

 

 

Vibrations multiaxes

We have up to 3 axes of control which allows us to control up to 3 vibrators (electrodynamic or electrohydraulic) simultaneously.

Driving is done in sinus, random, or recopy of road signals, and on force, displacement or acceleration signals.

Our professions and skills

Combining technical competence, exceptional instrumentation, mastery of standards and procedures, our laboratories guarantee the proper conduct of test campaigns and their reproducibility.

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You benefit from our know-how of testing and associated standards, our experience feedback on test campaigns and our mastery in project management.

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Our training courses are aimed at all those involved in the design, manufacture or marketing of products and who have to comply with applicable regulations or qualification requirements.

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The Emitech Group has an Engineering Department (Emitech, based at Montigny near Paris) and an Innovation & Applications Department (based at Environne'Tech) dedicated to developing testing tools for the group's internal use and on behalf of clients who are keen to equip themselves with technology that integrates the experience and expertise of a respected test centre. This expertise is focused primarily on mechanical environments and climatic conditions.

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We offer you the corrective and preventive maintenance of your vibration test equipment (electrodynamic and hydraulic) and the test benches carried out by us.

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Our metrology and calibration services cover the fields of electromagnetic compatibility and mechanical and climatic environments.

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Join the Emitech Group , environmental testing specialist

We recruit

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