Investigation of self-heating and dissipative effects in ferroelectric ceramics subjected to compressive mechanical cyclic loading
نویسندگان
چکیده
In this study the behavior of a soft PZT ceramic subjected to compressive cyclic loadings is investigated with aim providing an insight into different dissipative processes which affect ferroelastic material. Two quantitative imaging techniques, infrared (IR) thermography and digital image correlation (DIC), are employed measure superficial temperature in-plane displacement sample under mechanical loadings. Thermal strain responses further deduced from these measurements. This allows quantify energy dissipated by material during applied Self-heating (SH) DIC measurements reveal that, even in piezoelectric regime, level dissipation significant. suggests that response compression significantly influenced domain switching mechanisms. The two techniques shown be efficient tools identify wall activity ferroelectric ceramics can advantageously substituted for polarization when variations too small detected. It also due initial stress experienced all specimens, uniaxial almost independent state
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ژورنال
عنوان ژورنال: Acta Materialia
سال: 2021
ISSN: ['1873-2453', '1359-6454']
DOI: https://doi.org/10.1016/j.actamat.2021.117386