The dynamic method of determination of the piezoelectric hydrostatic coefficients

Non-linear properties of PZT ceramics in the wide temperature range

“…This method was described in our previous paper. 7 The experimental set up of the d h,diff coefficient measurement under bias field is schematically given in Fig. 1.…”

“…7 The measurements of the d h,diff coefficient were performed under constant bias field in the temperature range from the room temperature up to 200 • C at a static pressure of 10 MPa, the frequency and the amplitude of the dynamical pressure excitation were 1 Hz and 100 kPa, respectively. The hard APC841 and soft APC856 disc-shaped samples were 1 mm thick and 12 and 15 mm in diameter, respectively.…”

Non-Linear Hysteresis Properties of PZT Ceramics

“…The methods of piezoelectric measurements and material characterization in general, have been well researched and developed [1][2][3][4][5][6][7][8][9][10][11]. Different displacement measurement methodologies have been previously reported, based on the measurement of changes of capacitance, inductance, using variable differential transformer (LVDT sensors) [3], velocity by Doppler principle, and strain by gauges or fiber optic probes.…”

“…Different displacement measurement methodologies have been previously reported, based on the measurement of changes of capacitance, inductance, using variable differential transformer (LVDT sensors) [3], velocity by Doppler principle, and strain by gauges or fiber optic probes. Non-linear behaviour such as influence of a bias electric field on the hydrostatic coefficient d h of PZT ceramics was studied in a wide temperature range [4,5]. The response of soft and hard PZT piezoceramics to uniaxial compressive stress loading was investigated [6].…”

Hydrostatic Piezoelectric Coefficient dh of PZT Ceramics and PZN-PT and PYN-PT Single Crystals

“…Besides d 33 and d 31 , no much attention was given to study the hydrostatic piezoelectric coefficient d h variation under different influences (as DC electric field, temperature, pressure). Thus, in our previous papers [6][7][8], the methods for determining PZT material parameters as piezoelectric coefficients d 33 , d 31 , and hydrostatic piezoelectric coefficients d h , g h were described. In this article our work deals with d h measurements by a dynamic hydrostatic method combining a static and variable superimposed pressure.…”