XXIV IMEKO World Congress "Think Metrology", Hamburg, 26-29, August, 2024, Germany
Freie Schlagworte
Primary shock calibration ; Hopkinson Bar ; LDV ; Interferometry ; Linear Motion Drive
Zusammenfassung
This paper describes improvements of PTB’s high intensity shock acceleration standard, which lead to an enhanced repeatability of a shock generation over an acceleration intensity range from 0.5 km/s² up to 100 km/s². High intensity shock calibrations can be carried out with dipole excitation using the “Hopkinson Bar Technique”. Most of the existing high intensity shock standards work generally in an acceleration range only from 5 km/s² to 100 km/s² and even higher.
The challenge was to implement of a new, fast, and more precise shock generator using a linear motor drive instead of a pneumatic device. By means of this software interface the motor can be controlled and the shocks can be carried out automatically.
Schönekeß, H. C., Volkers, H., Klaus, L., & Bruns, T. (2025). Primary high shock generator with fast and strong linear motor drive for accelerometer calibrations. Measurement: Sensors, 38(Suppl.), e1–e6. https://doi.org/10.1016/j.measen.2024.101745
