This is the final report for CIPM key comparison CCAUV.V-K3 in the area of 'vibration' (quantity of acceleration). The aim of this comparison was to measure the voltage sensitivity of one accelerometer standard set with primary means at 27 frequencies from 0.1 Hz to 40 Hz. Fourteen Metrology Institutes from five RMOs have participated in the comparison with National Institute of Metrology, P.R. China as pilot lab and Laboratoire National de Métrologie et d'Essais and National Metrology Institute of South Africa as co-pilot labs. One quartz-flexure servo accelerometer of single-ended type and a signal conditioner was circulated among the participants. All but one of the participating laboratories provided their calibration results, which were mostly consistent within their declared expanded uncertainties for magnitude results. Only two participants failed to contribute to the KCRV values calculated for five frequencies. For phase shift, three participants could not contribute to the calculation of the KCRV values in a total of sixteen frequencies. This first low-frequency vibration key comparison revealed the current calibration capabilities of the fourteen participants of five RMOs. 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).

Most industrial measurements of force and torque are performed dynamically, while calibrations are performed mostly in static form. It is evident that the dynamic responses of the instruments are very different from the static form. The National Metrology Institutes (NMIs) have been requested by industry to develop solutions for this gap in metrological traceability and have recently undertaken activities to do so. The Inter-American Metrology System (SIM) implemented the project “Industrial Dynamic Measurements (from industry to primary standard)”, involving the NMIs: INTI/Argentina, INMETRO/Brazil, NIST/USA CENAM/Mexico and INM/Colombia. Main backgrounds, findings and outlooks of the project are highlighted in this paper.

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