Vol. 64 No. 4 (2009)

Published: 2009-12-24

ULTRASONIC AND ACOUSTIC MEASUREMENTS

A study of acoustic echolocation in complex gaseous environments by using acoustic antennas consisting of piezoelectric ceramic transducers in flexural vibration

A. Petrauskas

8-17
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Influence of the dispersion on measurement of phase and group velocities of Lamb waves

L. Mažeika, L. Draudvilienė, E. Žukauskas

18-21
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WAVE RADIATION AND PROPAGATION

Comparison of simulations of ultrasonic fields of rectangular transducer

M. Gresevičius, E. Jasiūnienė, L. Mažeika

22-27
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NON-DESTRUCTIVE TESTING AND DIAGNOSTIC METHODS

Investigation of correlation in bearings’ vibrations of high-performance centrifugal pumps

V. Volkovas, A. Perednis

28-35
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Application of ultrasonic transducers for investigation of composite materials

A. Vladišauskas, R. Šliteris, R. Raišutis, G. Seniūnas, E. Žukauskas, L. Mažeika

36-43
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ULTRASONIC TRANSDUCERS

Methods of synthesis of piezoceramic transducers: spatial energy force structure of piezoelement

V. Sharapov, A. Vladišauskas, K. Bazilo, L. Kunitskaya, Zh. Sotula

44-50
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Bimorph cylindrical piezoceramic scanner for scanning probe nanomicroscopes

V. Sharapov, A. Vladišauskas, S. Filimonov

51-54
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Investigation of ferrofluids motion in multi-pole electromagnetic field

K. Šileika, I. Skiedraitė

55-59
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Optimization of polypropylene pipe wall thickness measurement by pulse ultrasonic method

S. Sajauskas, V. Markevičius, J. Savickaitė

60-63
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APPLICATIONS IN BIOLOGY AND MEDICINE

Chlorella vulgaris IFR 111 influence on structural features of rabbits eyes

M. Paunksnienė, V. Babrauskienė, A. Paunksnis

64-66
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