A manual excitation with a small Modal hammer without a „Double Hit“ is nearly impossible – a well-known and very inconvenient issue. As solution for this issue MAUL-THEET developed the product family of the automatic Modal hammer „vImpact“. This enables you to precisely and reproducibly excite structures and measure the excitation forces. The new models of the MAUL-THEET automatic modal hammers are the vImpact-61, the vImpact-21 and the vImpact-2001. With the vImpact-2001 in particular, the excitation force can be set over a wide range, since the tips can be exchanged here.
In contrast to their predecessors, the vImpact-60, vImpact-20 and vImpact-2000, the new models have increased the maximum impact forces, especially when exciting above head. At the same time, we have increased the user-friendliness by reducing the controls and also improved the adjustment of the impact force. Furthermore, the signal cable can be grounded via a switch to improve the signal-to-noise ratio (SNR).
The hammer head includes the small Modal hammer who has an integrated force cell and the electrodynamic actor that moves the hammer. The control unit sends the impulse that moves the Modal hammer to the actor inside the hammer head. The measured force signal is at the output of the control unit available. The hammer can be triggered by several methods:
Manually with the trigger button at the control unit.
By closing the external input with a switch through an extension wire or by any device with a closing contact.
With a TTL signal (40 .. 200 ms)
With the internal timer in the range of 4 hits per second up to 1 hit per minute.
|Max. Impact force|
(Steel on Steel)
|> 150 N peak||> 150 N peak||> 2000 N peak
(Steel on Steel)
|> 40 kHz||> 20 kHz||> 6 kHz
|Coupling||2-4 mA, IEPE||2-4 mA, IEPE||2-4 mA, IEPE
|Trigger||Timer // Button// External Contact (Closer)// TTL (40 .. 200 ms)||Timer // Button// External Contact (Closer)// TTL (40 .. 200 ms)||Timer // Button// External Contact (Closer)// TTL (40 .. 200 ms)|
|Power Supply||24 V||24 V||36 V|
|Mass||Head: 0,41 kg, Controller: 0,6 kg||Head: 0,42 kg, Controller: 0,6 kg||Head: 4.9 kg, Controller: 0.6 kg|