National Physical Laboratory

High Temperature Resonance: Measurement and Standards

Piezoelectric resonance is widely used for room temperature characterisation of piezoelectric materials.

Temperature dependence of the piezoelectric resonance spectra for PZT measured using the NPL high temperature resonance system
Temperature dependence of the piezoelectric resonance spectra for PZT measured using the NPL high temperature resonance system


The method is standardised in EN 50324-2:2002, Piezoelectric properties of ceramic materials and components - Part 2: Methods of measurement - Low power, but only for low loss materials. At high temperatures losses become significant. The METCO project is investigating the applicability of this standard to high temperature measurements, and if there is a need to extend the standard to provide reliable measurement at high temperature. Comparison between resonance and interferometric measurements within METCO is a key element of validating the reliability of resonance measurements at high temperature.

Anyone interested in standards for piezoelectric measurements in high temperature or lossy materials should contact: metco@npl.co.uk

Last Updated: 12 Mar 2015
Created: 11 Mar 2015

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