Modal Exciters

Techni Measure offer a wide range of vibration and shock exciters from SPEKTRA and APS are available for structural excitation and modal assessment. Our mobile shakers exhibit their best performance in the low-frequency range. Typical applications are modal testing of buildings, bridges and other large structures.

APS 113

Ball-bearing ELECTRO-SEIS® Long-Stroke vibration exciter specifically designed to be used alone or in arrays for modal excitation of complex structures, particularly when low frequencies are required. Different operating modes with reaction masses, fixing points or auxiliary table kits multiply the application possibilities.

  • Force, max: 133 N (optionally 186 N)
  • Displacement: 158 mm (peak-peak)
  • Frequency range: DC … 200 Hz
  • Payload, max: horizontal = 25 kg (55 lbs) / vertical = 8 kg (18 lbs)
  • Direction of excitation: vertical or horizontal

APS 400

ELECTRO-SEIS® Long-Stroke vibration exciter with 445 N max. A force that is suitable for the excitation of large structures such as ceilings or bridges.

  • Force, max: 445 N (100 lbf)
  • Displacement, max: 158 mm (peak-peak)
  • Frequency range: DC…200 Hz
  • Overhung load at armature attachment point, max. 9.0 kg (20 lbs)
  • Direction of excitation: vertical or horizontal

APS 420

The strongest ELECTRO-SEIS® Long-Stroke vibration exciter to date is used for vibration tests of aeroplanes and other large structures. With a maximum force of 900 N and up to 150 mm stroke, the shaker unlocks a new performance level.

  • Max. Force: 900 N
  • Max. Displacement pk-pk: 150 mm
  • Frequency Range: DC – 200 Hz