Final report on CIPM key comparison CCAUV.V-K2

Abstract

The results of the third CIPM comparison in the area of vibration, here concerning sinusoidal acceleration, are presented. This comparison was intended to build the foundation for subsequent regional key comparisons over an extended frequency range. However, one of the transducers showed a poor stability. This feature, and other shortcomings that became apparent during the analysis, limit the impact of the comparison results. Therefore, a key comparison reference value has been defined for a limited domain and application, and the respective Degrees of Equivalence are reported.Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.The final report has been peer-reviewed and approved for publication by the CCAUV, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

An Analysis of the Participation of Inmetro in Interlaboratory Comparisons in Vibration Measurements

“…The level of agreement achieved was much better for the next CIPM vibration KC, CCAUV.V-K2 [2]. This second one covered both magnitude and phase of accelerometers´ sensitivity in the frequency broader range from 10 Hz up to 10 kHz.…”

“…Year CCAUV.V-K5 [3] 0.20 % 2021 CCAUV.V-K2 [2] 0.24 % 2014 CCAUV.V-K1.1 [1] 0.24 % 2007 SIM.AUV.V-K1 [8] 0.50 % 2004…”

Intrinsically accurate sensing with an optomechanical accelerometer

“…4 are similar or better than those typically achieved by NMIs using accepted primary calibration methods. 34…”

Precise sinusoidal signal extraction from noisy waveform in vibration calibration

“…The estiation accuracy is essential for the calibration uncertainty. The requirement for the primary calibration is about 0.1 % and 0.1 • for the amplitude and phase, respectively [6,7]. In these studies, large vibration that was nearly 10 m/s 2 was applied.…”