Dynamic fatigue of cracked piezoelectric ceramics under electromechanical loading: three-point bending test and finite element analysis

Abstract

This paper studies the dynamic fatigue or slow crack growth in piezoelectric ceramics under electromechanical loading by a combined numerical-experimental approach. Constant load-rate testing was conducted in three-point flexure using the single-edge precracked-beam specimens under zero and positive electric fields, and the effects of electric field and loading-rate on the fracture load and crack propagation were examined. A finite element analysis was also employed to calculate the energy release rate for the permeable, impermeable and open crack models, and the effect of electric field on the energy release rate was discussed. Crack propagation velocity versus energy release rate curves at various loading-rate were then estimated based on the finite element analysis using measured data.

Dynamic fatigue behavior of cracked piezoelectric ceramics in three-point bending under AC electric fields

“…: +81 growth rate versus maximum energy release rate curves. Moreover, Shindo et al 3 investigated the dynamic fatigue in cracked PZT ceramics under mechanical load and DC electric fields.…”

A Review on Piezoelectric, Magnetostrictive, and Magnetoelectric Materials and Device Technologies for Energy Harvesting Applications

“…The discussion has focused on the fatigue of PZT ceramics, [167] and static, [168] dynamic, [169] and cyclic [170] fatigue of PZT ceramics with a crack under a DC electric field. Significant research has also been conducted on the fatigue crack behavior in piezoelectric ceramics.…”

Static Fatigue of Three‐Point Bending Piezoelectric Ceramics with a Single‐Edge Crack Under AC Electric Fields

“…They discussed the effect of applied electric field on the crack growth rate versus maximum energy release rate curves. Shindo et al . also investigated the dynamic fatigue in cracked PZT ceramics under electromechanical loading.…”