TY - JOUR
T1 - Evaluation of electric fracture properties of piezoelectric ceramics using the finite element and single-edge precracked-beam methods
AU - Shindo, Yasuhide
AU - Murakami, Heihachiro
AU - Horiguchi, Katsumi
AU - Narita, Fumio
PY - 2002/5
Y1 - 2002/5
N2 - Single-edge precracked-beam (SEPB) tests were performed on a commercial lead zirconate titanate (PZT) ceramic. Mechanical loading was applied by the crosshead displacement control of a screw-driven electromechanical test machine. The fracture toughness parameter KC was determined for various electric fields. A finite element analysis was also done to calculate the total potential energy release rate, mechanical strain energy release rate, and stress intensity factor for three-point flexure piezoceramic specimens with permeable and impermeable cracks under displacement and load control conditions. Numerical investigation and comparison with test data indicate that the energy release rate, upon application of the permeable model, is useful for predicting crack growth in PZT ceramic under electromechanical loading. Based on current findings, we suggest that the energy release rate criteria for the permeable crack are superior to fracture criteria for the impermeable crack.
AB - Single-edge precracked-beam (SEPB) tests were performed on a commercial lead zirconate titanate (PZT) ceramic. Mechanical loading was applied by the crosshead displacement control of a screw-driven electromechanical test machine. The fracture toughness parameter KC was determined for various electric fields. A finite element analysis was also done to calculate the total potential energy release rate, mechanical strain energy release rate, and stress intensity factor for three-point flexure piezoceramic specimens with permeable and impermeable cracks under displacement and load control conditions. Numerical investigation and comparison with test data indicate that the energy release rate, upon application of the permeable model, is useful for predicting crack growth in PZT ceramic under electromechanical loading. Based on current findings, we suggest that the energy release rate criteria for the permeable crack are superior to fracture criteria for the impermeable crack.
UR - http://www.scopus.com/inward/record.url?scp=0036572438&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036572438&partnerID=8YFLogxK
U2 - 10.1111/j.1151-2916.2002.tb00252.x
DO - 10.1111/j.1151-2916.2002.tb00252.x
M3 - Article
AN - SCOPUS:0036572438
VL - 85
SP - 1243
EP - 1248
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
SN - 0002-7820
IS - 5
ER -