M/076 - Advanced ceramics

Published by CLC/BTTF 63-2 (disbanded by D118/112)

Published under CLC/BTTF 63-2 (disbanded by D118/112)

Published under CLC/BTTF 63-2 (disbanded by D118/112)

This European Standard relates to piezoelectric transducer ceramics for power application over a wide frequency range both as electromechanical or mechanoelectrical converters. This standard covers the large signal characterization of piezoelectric ceramics material only, and not the characterization of a complete assembled transducer. The selection of a material for a given power application is difficult and the advice given in clause 2 is mainly indicative.

This standard includes a survey of marginal conditions as well as test methods for the determination of material relating to characteristics of piezoelectric ceramics and transducers which are mainly intended for use as sound generators and receivers in electro-acoustics and ultra-sound engineering - It also includes definitions and characteristics of piezoelectric ceramics and transducers

The methods of measurement described in this European Standard are for use with piezoelectric components produced from the ceramic materials described in EN 50324 1 “Terms and definitions”. Methods of measurement for specific dielectric, piezoelectric and elastic coefficients are generally applicable to piezoelectric ceramics. The polycrystalline nature of ceramics, statistical fluctuations in composition and the influence of the manufacturing process, result in specified material coefficients being typical mean values. These values are provided for design information only. Piezoelectric transducers can have widely differing shapes and may be employed in a range of vibrational modes. Material parameters however, are measured on simple test-pieces (discs, rods etc. see EN 50324-1, Figure 2) using specific geometric and electrical boundary conditions. Consequently, the results of the tests provide basic material parameters only and must only be used as a guide to the actual properties of manufactured commercial components.