Production of narrow weakly divergent beams

Journal Article · Wed Feb 01 04:00:00 EST 1989 · Sov. J. Nondestr. Test. (Engl. Transl.); (United States)

OSTI ID:5909825

Karpel'son, A E

Experimental results are presented from an ultrasonic field study of piezoelectric transducers on whose operating surfaces there has been created an acoustic-pressure distribution in the form of a Bessel function of the first kind and zero order. The transducers were comprised of a system of ring electrodes on both sides of a piezoelectric plate. It was established that a transducer having on its operating surface an acoustic pressure distribution according to the Bessel function used will form throughout the irradiated zone the narrowest weakly divergent beam and will produce the greatest signal amplitude. The larger the number of ring-electrode pairs disposed on its surface and the larger its diameter, the narrower will be the main lobe of the directivity pattern it forms and the lower will be the level of its side lobes.

• Research Organization: Scientific-Research Institute of Introscopy, Moscow (USSR)
• OSTI ID: 5909825
• Journal Information: Sov. J. Nondestr. Test. (Engl. Transl.); (United States), Journal Name: Sov. J. Nondestr. Test. (Engl. Transl.); (United States) Vol. 24:6; ISSN SJNTA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420500* -- Engineering-- Materials Testing
ACOUSTIC TESTING
ACOUSTICS
AMPLITUDES
BEAM PRODUCTION
BESSEL FUNCTIONS
DETECTION
ELECTRICITY
ELECTRODES
FOCUSING
FUNCTIONS
MATERIALS TESTING
MATHEMATICAL MODELS
NONDESTRUCTIVE TESTING
PERFORMANCE TESTING
PIEZOELECTRICITY
PRESSURE GRADIENTS
SCATTERING
SIGNALS
SOUND WAVES
TESTING
TRANSDUCERS
ULTRASONIC TESTING
ULTRASONIC WAVES
WAVE PROPAGATION