The Standards on piezoelectric ceramics provide for the evaluation of the longitudinal parameters such as k33 only for short bars and thin cylinders electroded at the ends. In view of the restricted polarization thicknesses of materials, ceramic bodies are often formed by cementing together a number of pieces of shorter dimensions. This note gives the equations for the evaluation of all parameters of such a multiply segmented ceramic body for which the length is large as compared to the lateral dimensions.
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Gordon E. Martin (1963) studied this question.
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