To estimate the electric fracture toughness, indentation fracture (IF) tests were made on piezoelectric materials under combined mechanical and electrical loads. Lead zirconate titanate (PZT) ceramics from a commercial source were used. A three-dimensional finite element analysis was also employed to calculate the energy release rate and stress intensity factor. Surface cracks produced by indentation with Vickers indented were modeled as two point-force loaded half-penny-shaped cracks.
Analysis and Testing of Indentation Fracture Behavior of Piezoelectric Ceramics Under an Electric Field
Contributed by the Materials Division for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received by the Materials Division April 27, 1999; revised manuscript received February 13, 2001. Associate Editor: G. Johnson.
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Shindo, Y., Oka, M., and Horiguchi, K. (February 13, 2001). "Analysis and Testing of Indentation Fracture Behavior of Piezoelectric Ceramics Under an Electric Field ." ASME. J. Eng. Mater. Technol. July 2001; 123(3): 293–300. https://doi.org/10.1115/1.1370370
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