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Measurement Uncertainty in Vibration Calibration in Frequency Range of 5 Hz to 10 kHz

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Abstract

The paper evaluates the measurement uncertainty in realizing the secondary vibration standard at CSIR-National Physical Laboratory, India, and presents a comparison of the measurement uncertainty of secondary standard with that of primary vibration standard. The relative expanded measurement uncertainty of 0.80% to 2.2% in frequency range of 5 Hz to 10 kHz is evaluated. The measurement uncertainty so calculated is verified by comparison with the results from primary vibration calibration standard of CSIR-National Physical Laboratory, New Delhi, and SPEKTRA Schwingungstechnik und Akustik GmbH Dresden, Germany primary calibrations. The study recommends calibrating the back-to-back accelerometer with minimal uncertainty by using a primary calibrated single-ended accelerometer mounted on the top of the back-to-back transducer.The paper serves a guiding document to the calibration laboratories, industries and other stake holders in India to understand the concept of traceability in vibration measurements and formulation of uncertainty budget as per the international standard. 

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Acknowledgements

Authors are thankful to the Director, CSIR-National Physical Laboratory, India, Head, Physico-Mechanical Metrology Division and Head, Acoustics and Vibration Standards for providing the necessary infrastructural support under the networking projects, NWP-45; and CSIR-NPL Fund (Budgetary Head: OLP 120632, P-1225103 allocated in December, 2016) for the up-gradation of Secondary vibration calibration standard. Authors thank Mr. Philipp Begoff and Mr. Frank Schultz of M/s SPEKTRA, Schwingungstechnik und Akustik GmbH Dresden, Germany. Authors also thank Mr. Sandeep Rapeswal, M. Tech scholar, NIT Kurukshetra, for his help in FEM studies. One of the authors B S Chauhan is thankful to Deptt. of Science and Technology for DST INSPIRE fellowship for pursuing Doctorate at CSIR-National Physical Laboratory, New Delhi from AcSIR, Ghaziabad.

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Authors and Affiliations

  1. CSIR-National Physical Laboratory, New Delhi, India

    Naveen Garg & B. S. Chauhan

  2. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India

    Naveen Garg & B. S. Chauhan

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  1. Naveen Garg
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  2. B. S. Chauhan
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Correspondence to Naveen Garg.

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Garg, N., Chauhan, B.S. Measurement Uncertainty in Vibration Calibration in Frequency Range of 5 Hz to 10 kHz. MAPAN 35, 397–405 (2020). https://doi.org/10.1007/s12647-020-00385-2

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