Traceable dynamic calibration of force transducers by primary means

Nicholas Vlajic, Ako Chijioke

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

We describe an apparatus for traceable, dynamic calibration of force transducers using harmonic excitation, and report calibration measurements of force transducers using this apparatus. In this system, the force applied to the transducer is produced by the acceleration of an attached mass, and is determined according to Newton's second law, F = ma. The acceleration is measured by primary means, using laser interferometry. The capabilities of this system are demonstrated by performing dynamic calibrations of two shear-web-type force transducers up to a frequency of 2 kHz, with an expanded uncertainty below 1.2%. We give an account of all significant sources of uncertainty, including a detailed consideration of the effects of dynamic tilting (rocking), which is a leading source of uncertainty in such harmonic force calibration systems.

Original languageEnglish (US)
Pages (from-to)S136-S148
JournalMetrologia
Volume53
Issue number4
DOIs
StatePublished - Jul 8 2016

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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