title: Numerical field intensity factor calculations for 1-3 piezocomposite structures.
abstract: The 1-3 piezocomposite transducers used in specific medical applications--as lithotripsy--must be excited by intense electrical impulses. By inference, the composite material is subjected to high-stress levels. To explain possible failure, a numerical tool for analyzing singular two- and three-dimensional stress fields in piezocomposite structures is proposed. Following a finite-element iterative method, singularity parameters values and intensity factors for the mechanical stresses and the electrical field are computed in several bimaterial configurations. The finite-element analysis uses commercial software.
authors.affiliation: French National Institute of Health and Medical Research, Lyon. closset@lyon.inserm.fr
authors.forename: Etienne
authors.initials: E
authors.lastname: Closset
authors.forename: Phillipe
authors.initials: P
authors.lastname: Trompette
authors.forename: Alain
authors.initials: A
authors.lastname: Birer
authors.forename: Dominique
authors.initials: D
authors.lastname: Cathignol
mesh_terms: D002516:Ceramics / Q000737:chemistry* / Q000528:radiation effects*; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008096:Lithotripsy / Q000295:instrumentation*; D008839:Microelectrodes; D008956:Models, Chemical; D012542:Scattering, Radiation; D014159:Transducers; D014463:Ultrasonography / Q000295:instrumentation* / Q000379:methods