Development of novel piezoelectric ceramics and composites for sensors and actuators by solid freeform fabrication

A. Safari, S. C. Danforth

Research output: Contribution to conferencePaperpeer-review

16 Scopus citations

Abstract

Novel piezoelectric ceramic, and ceramic/polymer composite structures were fabricated by solid freeform fabrication (SFF) for sensor and actuator applications. SFF techniques including: Fused Deposition of Ceramics (FDC) and Sanders Prototyping (SP) were utilized to fabricate a variety of complex structures directly from a computer aided design (CAD) file. Many novel and complex composite structures including volume fraction gradients (VFG), staggered rods, radial and curved composites, and actuator designs such as tubes, spirals and telescopings were made using the flexibility provided by the above processes. Radial composites with various connectivities in the radial direction were made for towed array applications. The FDC process was also used to fabricate curved composites with desired radii of curvatures for focusing high intensity ultrasound beams at different points along the axial direction. VFG's were incorporated into some of these designs, with the ceramic content decreasing from the center towards the edges. Many new designs are also being used to manufacture high authority actuators utilizing the FDC technique. The design, fabrication and electromechanical properties of these sensor and actuator structures are discussed in this paper.

Original languageEnglish (US)
Pages229-234
Number of pages6
StatePublished - 1998
EventProceedings of the 1998 11th IEEE International Symposium on Appliations of Ferroelectrics (ISAF-XI) - Montreaux, Switz
Duration: Aug 24 1998Aug 27 1998

Other

OtherProceedings of the 1998 11th IEEE International Symposium on Appliations of Ferroelectrics (ISAF-XI)
CityMontreaux, Switz
Period8/24/988/27/98

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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