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<p>Using an improved SHPB system with lateral confining pressure and electrical measurement, this paper studies PZT95/5 ferroelectric ceramics under three-dimensional impact. Confining pressure significantly alters the failure mode, suppressing transverse expansion and crack growth while increasing dynamic compressive strength. The stress–strain curve exhibits a distinct double-peak feature, indicating residual load-bearing capacity. Electrically, confining pressure enhances shock-induced depolarization, boosting electric displacement by 14.29% and depolarization volume fraction by 10% compared to unconfined samples. As strain rate rises from 1500 to 4500&#xa0;s⁻<sup>1</sup>, compressive strength, electric displacement, and depolarization degree all increase monotonically, reaching 643.42&#xa0;MPa, 0.248&#xa0;C&#xa0;m⁻<sup>2</sup>, and 75.65%, respectively. Load impedance also plays a key role: low impedance yields high current and narrow pulses, while high impedance yields high voltage and wide pulses. An optimal impedance of about 1&#xa0;k<i>Ω</i> is identified, balancing voltage output with charge release. These findings reveal the electromechanical response of PZT95/5 under confinement, aiding sensor and energy device optimization.</p>

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Electromechanical response of PZT95/5 ferroelectric material under high strain rate and confining pressure

  • 期刊论文

  • 发表日期：

    2026年5月19日

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  • Zhaoxing Wang,
  • Kai Guo,
  • RuiZhi Wang,
  • Enling Tang

摘要

Using an improved SHPB system with lateral confining pressure and electrical measurement, this paper studies PZT95/5 ferroelectric ceramics under three-dimensional impact. Confining pressure significantly alters the failure mode, suppressing transverse expansion and crack growth while increasing dynamic compressive strength. The stress–strain curve exhibits a distinct double-peak feature, indicating residual load-bearing capacity. Electrically, confining pressure enhances shock-induced depolarization, boosting electric displacement by 14.29% and depolarization volume fraction by 10% compared to unconfined samples. As strain rate rises from 1500 to 4500 s⁻1, compressive strength, electric displacement, and depolarization degree all increase monotonically, reaching 643.42 MPa, 0.248 C m⁻2, and 75.65%, respectively. Load impedance also plays a key role: low impedance yields high current and narrow pulses, while high impedance yields high voltage and wide pulses. An optimal impedance of about 1 kΩ is identified, balancing voltage output with charge release. These findings reveal the electromechanical response of PZT95/5 under confinement, aiding sensor and energy device optimization.