ISO 16063-43:2015

Overview

ISO 16063-43:2015 - Methods for the calibration of vibration and shock transducers - Part 43: Calibration of accelerometers by model-based parameter identification - prescribes methods to estimate the parameters of mathematical models that describe accelerometer input/output behaviour and to quantify their uncertainties. This part of the ISO 16063 series extends established calibration procedures (ISO 16063‑11, ‑13, ‑21, ‑22) by providing a model-based characterization suited to broadband and transient inputs (e.g., shock) rather than single-value peak sensitivities.

Key topics and technical requirements

• Model-based parameter identification: Representation of the accelerometer as a dynamic system (commonly a linear mass‑spring‑damper model) and estimation of parameters (resonance frequency, damping, electromechanical conversion, etc.) from calibration data.
• Use of standard calibration data: Parameters are derived from data collected using existing ISO methods (laser interferometry, comparison to reference transducers, sinusoidal and shock calibrations).
• Uncertainty estimation: Follow the GUM approach (ISO/IEC Guide 98‑3) and its Supplement on Monte Carlo methods for propagation of distributions; includes analytical and numerical propagation of parameter uncertainties.
• Frequency‑ and time‑domain treatments: Identification methods for sinusoidal (frequency domain) and shock (time/frequency domain) calibration data, yielding a continuous transfer model usable for transient analysis.
• Practical considerations and validation: Requirements covering the measurement chain influence, channel synchrony, source data quality, empirical and statistical tests of model validity, and reporting of results.

Practical applications and users

ISO 16063-43:2015 is intended for:

• Calibration laboratories and national metrology institutes upgrading shock calibrations to model-based characterizations.
• Metrologists and test engineers who measure transient or broadband vibration and shock signals and need accurate time-domain input reconstruction.
• Manufacturers of accelerometers and measurement systems seeking to characterize dynamic response and provide improved device specifications.
• Accreditation bodies and quality managers evaluating proficiency and comparability of shock calibration results across facilities.

Benefits in practice:

• Improved accuracy for transient measurements (shock, impact, broadband vibration).
• Ability to predict unknown transient inputs from measured outputs with quantified uncertainty.
• Basis for real‑time compensation or deconvolution to extend usable transducer bandwidth.
• Better comparability of calibrations between facilities despite differing transient excitations.

Related standards

• ISO 16063‑11, ISO 16063‑13, ISO 16063‑21, ISO 16063‑22 (calibration procedures referenced for input data)
• ISO/IEC Guide 98‑3 and Supplement 1 (GUM and Monte Carlo uncertainty propagation)

Keywords: ISO 16063-43:2015, calibration of accelerometers, model-based parameter identification, vibration transducers, shock transducers, transient measurement, uncertainty estimation, accelerometer calibration, frequency response.