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14 June 2000 Strength of a PZT ceramic under different test conditions
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Strength measurements were carried out in different poling states under several eternally applied electrical fields perpendicular to the specimen length axis and with different test procedures. The main results were: (a) polarization parallel to the specimen length axis reduces the strength significantly, polarization in thickness direction showed small strength reduction only, (b) an electrical field directed normally to the length axis yields a significantly lower tensile strength compared with unpoled material, and (c) strength in bending and tensile tests exhibits strongly different results. The differences caused by the poling state and externally applied electric field are discussed in terms of orientation of domains ahead of natural cracks.
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Theo Fett, Marc Kamlah, Dietrich Munz, and Gerhard Thun "Strength of a PZT ceramic under different test conditions", Proc. SPIE 3992, Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics, (14 June 2000); doi: 10.1117/12.388204;

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