Title :
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
Abstract :
A Tonpilz type transducer has been designed and fabricated using grain oriented Tb0.3Dy0.7Fe1.95 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;
Conference_Titel :
Ocean Electronics (SYMPOL), 2013
Conference_Location :
Kochi
Print_ISBN :
978-93-80095-45-5
DOI :
10.1109/SYMPOL.2013.6701947
