THE NEED FOR CONTROLLED SHOCKS - A NEW TYPE OF SHOCK EXCITER ALLOWS TO APPLY WELL DEFINED MECHANICAL SHOCKS |
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| Holger Nicklich, Martin Brucke, Michael Mende |
- Abstract:
- Shock exciters available on the market today suffer from a lack of control of the generated shocks. This paper will present a new type of shock exciter developed by SPEKTRA which is based on the well known Hopkinson-Bar but using a piezoelectric actuator to apply the force pulse input (* patent pending). It will be shown that a piezoelectric actuator driven Hopkinson-Bar generates well defined shocks allowing the control of pulse width and amplitude independently over a wide range. Furthermore the spectrum of the applied shocks can be controlled accurately by shaping the input force pulse coming from the actuator. Thus this new shock exciter is a valuable tool for shock calibration in metrology as well as for sensor characterisation in development departments.
- Keywords:
- shock exciter, Hopkinson-bar, piezoelectric actuator, MEMS testing
- Download:
- IMEKO-WC-2009-TC22-396.pdf
- DOI:
- -
- Event details
- Event name:
- XIX IMEKO World Congress
- Title:
Fundamental and Applied Metrology
- Place:
- Lisbon, PORTUGAL
- Time:
- 06 September 2009 - 11 September 2009