Experimental research on dynamic mechanical properties of PZT ceramic under hydrostatic pressure |
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Authors: | S. WangK.X. Liu |
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Affiliation: | LTCS and Department of Mechanics & Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, People''s Republic of China |
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Abstract: | An experimental technique for initially applied hydrostatic pressure in specimens subjected to axial impact has been developed to study the dynamic mechanical properties of materials. The technique was employed for the purpose of examining the dynamic mechanical properties of lead zirconate titanate (PZT) at zero to 15 MPa hydrostatic pressures. Experimental results unambiguously exhibit the ductile behavior of PZT when hydrostatic pressure is involved. The compressive strength is demonstrated sensitive to the initial hydrostatic pressure and the strain-rate. The fracture modes are analyzed by means of scanning electron microscopy (SEM). Moreover, a failure criterion based on Mohr-Coulomb failure theory is suggested to explain the brittle and ductile failure of PZT. |
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Keywords: | 62.20.Mk 77.90.+k |
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