| Zugriffsnummer | 14656 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | From oscillation to impact: The design of a new force calibration device at PTB |
| Autor(in); Institution |
Bruns, Thomas; 1.13, Drehmoment, PTB-Braunschweig
Kumme, Rolf; 1.12, Kraft, PTB-Braunschweig
Kobusch, Michael; 1.1, Festkörpermechanik, PTB-Braunschweig
Peters, Manfred; 1, Mechanik und Akustik, PTB-Braunschweig
|
| Quelle/Jahr | Measurement: 32 (2002), 85 - 92 |
| ISSN | 0263-2241 |
| Verlag | Amsterdam [u.a.]: Elsevier Science |
| Freie Schlagworte | force calibration ; dynamic force ; shock ; impact ; laser-doppler interferometry ; air bearing |
| Zusammenfassung | This article describes the design of a new facility which is under construction at the Physikalisch-Technische Bundesanstalt for the calibration of force transducers with impulse forces. Force pulses of 1 ms duration and less are generated by the impact of two bodies of known mass, having their acceleration derived from velocity data taken with laser-Doppler-interferometry. To minimize the influence of friction linear air bearings are used as guideways for these bodies. Numerical simulations based on a non-linear mass-spring model are performed to get a prediction of the expected signals under the influence of hertz-like contacts as well as of the pulse duration and the amplitude. Finally the major sources of measurement uncertainty are discussed. |
