Pb(Ni1/3Sb2/3)O3-PbZrTiO3 Ceramic Sensors for Underwater Transducer Application

  • C. M. Lonkar Armament Research & Development Establishment, Pune
  • D. K. Kharat Armament Research & Development Establishment, Pune
  • H. H. Kumar Armament Research & Development Establishment, Pune
  • Sahab Prasad Defence Institute of Advanced Technology, Pune
  • K. Balasubramanian Defence Institute of Advanced Technology, Pune
  • N. S. Prasad Naval Science and Technological Laboratory, Vishakhapatnam
DOI: https://doi.org/10.14429/dsj.62.1718
Keywords: PNS-PZT piezoceramics, cymbal hydrophone, receiving sensitivity, directivity pattern

Abstract

Cymbal is a class-V flextensional transducer that consists of thickness poled ceramic disc sandwiched between the two metal end caps which acts as a mechanical transformer. Cymbal transducers were fabricated using piezoceramic discs of compositions Pb0.988(Zr0.52Ti0.48) 0.976Nb0.024O3 (PZT type 5A) and Pb0.98La0.02 (NiSb)0.05[(Zr0.52 Ti0.48)0.995]0.95O3 (PNS-PZT). Piezoelectric and hydrostatic constants for PNS-PZT composition were on higher side. End capswere made up of brass sheet having thickness 0.5 mm. Underwater testing of the polyurethane moulded cymbal hydrophones were carried out in acoustic tank and compared. The resonance frequency for both the hydrophones was 10.1 kHz. PNS-PZT hydrophone shows higher sensitivity (-183.2 dB re 1V/μPa) compared to PZT type 5A (-191.2 dB re 1V/μPa) at resonance frequency. Directivity pattern observed for PNS-PZT is omni-directional near resonance frequency.

Defence Science Journal, 2012, 62(4), pp.269-273, DOI:http://dx.doi.org/10.14429/dsj.62.1718

Author Biographies

C. M. Lonkar, Armament Research & Development Establishment, Pune

Mr C.M. Lonkar has obtained his MSc (Physics) from University of Pune, Pune. Presently working at DRDO Centre for Piezoceramics and Devices at Armament Research & Development Establishment (ARDE), Pune. He has published 8 researchpapers in the international journals,conferences & symposia. He has experience of developing various grades of ferroelectric materials.

D. K. Kharat, Armament Research & Development Establishment, Pune
Dr D.K. Kharat presently working as a Sc’G’ and Associate Director, AdvancedTechnology Division and DRDO Centre for Piezoceramics and Devices at ARDE,Pune. He has published more than 80 research papers though peer reviewed international, national journals and various conferences and symposia.
H. H. Kumar, Armament Research & Development Establishment, Pune
Mr H.H. Kumar has obtained his MSc (Physics) from Pune University. Presently working as Head, DRDO Centre for Piezoceramics and Devices at ARDE, Pune. He has published 24 research papers in peerreviewed journals and over 50 papers in conferences/seminars. He also possesses 3 Indian patents to his credit. He is presently working on nano materials and energy harvesting applications.
Sahab Prasad, Defence Institute of Advanced Technology, Pune
Dr Sahab Prasad has obtained his PhD from IIT Roorkee in 1984. He was Head ofthe Department of Materials Engineering, and Controller of Examinations, DIAT, Pune. He has supervised several PG and PhD students and authored several research papers and technical reports.
K. Balasubramanian, Defence Institute of Advanced Technology, Pune
Dr Balasubramanian K. has obtained his PhD(Materials Engineering) from Loughborough University, UK. Presently working as Head, Department of Materials Engineering, DIAT, Pune. He has filed10 international/national patents and has transferred technologies to automotive, aerospace and health care industries. He has published about 80 international articles.His research area includes: Polymer composites, plastics engineering, nanocomposites, ceramics and elastomers, coatings,and advanced materials.
N. S. Prasad, Naval Science and Technological Laboratory, Vishakhapatnam
Dr N.S.Prasad is presently working as a Scientist D at Naval Science & Technological Laboratory, Visakhapatnam. He is working in the area of underwater acoustic transducers-based on PZT andPiezo-composite ceramics for underwater vehicles and countermeasure systems.
Published
2012-07-03
How to Cite
Lonkar, C., Kharat, D., Kumar, H., Prasad, S., Balasubramanian, K., & Prasad, N. (2012). Pb(Ni1/3Sb2/3)O3-PbZrTiO3 Ceramic Sensors for Underwater Transducer Application. Defence Science Journal, 62(4), 269-273. https://doi.org/10.14429/dsj.62.1718
Issue
Vol 62 No 4
Section
Materials Science & Metallurgy
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