P1.7 - Comparison of Laservibrometers and Strain Gauges as Reference Sensors for High-g Shock Accelerometer Calibration Systems
- AMA Conferences 2013
2013-05-14 - 2013-05-16
- Proceedings SENSOR 2013
- P1 - Mechanical
- M. Mende, M. Brucke, U. Bühn - SPEKTRA Schwingungstechnik und Akustik GmbH, Dresden (Germany), G. Siegmund, C. Ehrmann - Polytec GmbH, Waldbronn (Germany)
- 693 - 699
Applications that require measurements of shock type acceleration in an amplitude range above 100 000 m/s2 are becoming increasingly more important in the industry. Thus also an accurate calibration of accelerometers used for such measurements is compulsory. This paper focuses on appropriate reference standards and the influence variables that determine the measurement uncertainty of high shock calibration systems using Hopkinson-bar shock exciters up to amplitudes of 2 000 000 m/s2. What are the main variables that determine the measurement uncertainty? How can the uncertainty contributions of different reference sensors (laser vibrometer and strain gauges) be verified?
The paper aims to give an overview and also tries to identify where future research will be necessary to understand influence variables and optimize the measurement uncertainty of such high-shock calibration systems.