Design and fabrication of Tonpilz type acoustic transducer using grain oriented Tb-Dy-Fe magnetostrictive material

Author

Basumatary, Himalay ; Palit, Mithun ; Chelvane, J. Arout ; Pandian, S. ; Abraham, Rijo Mathews ; Kumar, R. Karthik ; Moosad, K.P.B. ; Ebenezer, D.D.

Author_Institution

Defence Metall. Res. Lab. (DMRL), Hyderabad, India

fYear

2013

fDate

23-25 Oct. 2013

Firstpage

1

Lastpage

8

Abstract

A Tonpilz type transducer has been designed and fabricated using grain oriented Tb_0.3Dy_0.7Fe_1.95 magnetostrictive rods as active elements. The design include provisions for DC biasing of the active elements with the help of an array of resin-bonded Nd-Fe-B ring magnets, AC drive coil and a pre-stressing mechanism. Resonance frequency of this transducer was found to be 1.6 kHz. A Transmitting Current Response (TCR) of 167 dB ref 1μPa/A at 1 m and a Transmitting Power Response (TPR) of 152 dB ref lμPa/W were achieved. The Source Level (SL) was determined to be 177 dB ref μPa at 1m.

Keywords

acoustic transducers; coils; dysprosium alloys; iron alloys; magnetostrictive devices; magnets; terbium alloys; AC drive coil; DC biasing; SL; TCR; TPR; Tb-Dy-Fe; active element; grain oriented magnetostrictive material; prestressing mechanism; resin-bonded ring magnet; resonance frequency; source level; tonpilz type acoustic transducer; transmitting current response; transmitting power response; Magnetic flux; Magnetic resonance; Magnetic separation; Magnetoacoustic effects; Magnetostriction; Transducers; Electro-acoustic transducer; Magnetostrictive transducer; Sonar transducer; Underwater transducer;

fLanguage

English

Publisher

ieee

Conference_Titel

Ocean Electronics (SYMPOL), 2013

Conference_Location

Kochi

ISSN

2326-5558

Print_ISBN

978-93-80095-45-5

Type

conf

DOI

10.1109/SYMPOL.2013.6701947

Filename

6701947