Journal of Engineering Materials and Technology · 2001 · 38 citations · 27 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsCeramicsFinite Element AnalysisFerroelectric CeramicsFracture MechanicsFracture ToughnessIndentation PropertiesPiezoelectric CeramicsPiezoelectric MaterialsCracksEnergy Release RateFracture BehaviorFracture Of CeramicsIndentation Fracture ToughnessLead Zirconate TitanateLead Zirconate Titanate CeramicsStress Intensity Factor
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.
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