Focused arc beam transducer-reflector

Details Focused arc beam transducer-reflector Focused arc beam transducer-reflector

1974-04-25

1976-06-22

Tudor, Harold

Communications: electrical

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Having indication or alarm

310 82, 310 85, 310 91, 340 8FT, 340 10, 343840, H04B 1300

Patent

active

039654559

ABSTRACT:
An acoustic transducer-reflector using a single disc-shaped piezoceramic element radiating into a compound reflector for obtaining a line focus sound beam that is characteristic of focused-arc transducers that maybe used for underseas applications and for non-destructive materials testing. The single transducer emits acoustic energy into the compound reflector which reshapes a circular beam into a focused arc beam. A shadow mask or aperture stop positioned in front of the reflector assures a beam such as would be radiated from a ring source.

REFERENCES:
patent: 2228024 (1941-01-01), Abrahams
patent: 2342721 (1944-02-01), Boerner
patent: 2370053 (1945-02-01), Lindenblad
patent: 2855526 (1958-10-01), Jones
patent: 3209361 (1965-09-01), Webb
patent: 3241147 (1966-03-01), Morgan
patent: 3262307 (1966-07-01), Hart
patent: 3325779 (1967-06-01), Supernaw et al.
patent: 3451260 (1969-06-01), Thurstone
"The Journal of the Acoustical Society of America", vol. 21, No. 5, Sept. 49, pp. 471-481, Refracting Sound Waves.
"Related Experiments with Sound Waves and Electromagnetic Waves", Kock from Proceedings of the IRE, July 1959, vol. 47, No. 7, pp. 1192-1201.

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