|About this Abstract
||MS&T21: Materials Science & Technology
||Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
||Enhanced Piezocomposite Transducers with 3D Printed Piezoelectric PZT
||Shawn M. Allan, Nicholas Voellm, Justin Tufariello, Barry Robinson, Alex Angilella, Leslie Riesenhuber, Brian Pazol
|On-Site Speaker (Planned)
||Shawn M. Allan
Ceramic Additive Manufacturing (AM) enables fabrication of piezocomposite transducers with novel geometries that can achieve new levels of performance for underwater acoustics, including increased transducer sensitivity and improved directionality. These favorable characteristics promise enhanced sensing performance on compact and autonomous watercraft where efficiency is critical and spatial aperture may be limited. The project team collaborated to create innovative structures in PZT-5H using lithography-based ceramic manufacturing (LCM) from Lithoz. MSI created printable ceramic powders for slurry creation and refined post-processing procedures for repeatable sintered material properties (density, dielectric constant, and piezoelectric coefficient) equivalent to conventionally produced bulk ceramic. Piezocomposite transducers produced with printed PZT were compared against conventionally manufactured replica transducers with excellent performance matching. MITRE utilized coupled-acoustic finite element analysis (FEA) to design and evaluate distributed composite apertures and auxetic structures with improved performance, which are only feasible to manufacture with AM.