Issue |
Int. J. Metrol. Qual. Eng.
Volume 7, Number 2, 2016
|
|
---|---|---|
Article Number | 201 | |
Number of page(s) | 12 | |
DOI | https://doi.org/10.1051/ijmqe/2016004 | |
Published online | 25 April 2016 |
Dynamic calibration of piezoelectric transducers for ballistic high-pressure measurement
1 Royal Military Academy (RMA),
Department of Weapons Systems and Ballistics, 30 avenue de la Renaissance, 1000
Brussels,
Belgium
2 University of Liège (ULg), Department
of Aerospace and Mechanical Engineering, 1-Chemin des Chevreuils, 4000
Liège,
Belgium
3 Military Academy (AM),
Fondouk-Jedid,
Grombalia, 8012
Nabeul,
Tunisia
⋆ Correspondence:
walktohunt1982@gmail.com
Received:
3
December
2015
Accepted:
6
March
2016
The development of a dynamic calibration standard for high-amplitude pressure piezoelectric transducers implies the implementation of a system which can provide reference pressure values with known characteristics and uncertainty. The reference pressure must be issued by a sensor, as a part of a measuring chain, with a guaranteed traceability to an international standard. However, this operation has not been completely addressed yet until today and is still calling further investigations. In this paper, we introduce an experimental study carried out in order to contribute to current efforts for the establishment of a reference dynamic calibration method. A suitable practical calibration method based on the calculation of the reference pressure by measurement of the displacement of the piston in contact with an oil-filled cylindrical chamber is presented. This measurement was achieved thanks to a high speed camera and an accelerometer. Both measurements are then compared. In the first way, pressure was generated by impacting the piston with a free falling weight and, in the second way, with strikers of known weights and accelerated to the impact velocities with an air gun. The aim of the experimental setup is to work out a system which may generate known hydraulic pressure pulses with high-accuracy and known uncertainty. Moreover, physical models were also introduced to consolidate the experimental study. The change of striker’s velocities and masses allows tuning the reference pressure pulses with different shapes and, therefore, permits to sweep a wide range of magnitudes and frequencies.
Key words: Pressure measurement / dynamic calibration / high speed camera / acceleration and displacement
© EDP Sciences 2016
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.