Mechanical and electrical responses of piezoelectric materials subjected to shallow cone indentation were evaluated. Theoretical analysis based on normal indentation of a transversely isotropic, piezoelectric solid by a conducting steel cone with zero potential bias was compared to experimental results on lead zirconate (PZT-4) and barium titanate ceramics. The effect of the cone angle on the linear elastic assumptions and the depoling of the material below the indenter tip was investigated. The load-displacement and the time-current relations were proven to be specific to the piezoelectric properties of the material. Therefore, instrumented cone indentation can be a viable test in assessing the mechanical and electrical responses of piezoelectric materials in small volumes.
ASJC Scopus subject areas
- Physics and Astronomy(all)