Abstract
The pulsed operation mode of an emission–reception system consisting of two immersion piezoelectric transducers separated by a liquid (glycerine) layer has been studied. Identical piezoceramic plates were used as active elements in the emitter and receiver. The rear sides of the plates were loaded on air. The emitting transducer was excited by composite-waveform electric signals consisting of two sine-wave half-periods with different amplitudes (with their sign taken into account). The length of each half-period corresponded to the half-period of emitting plate vibration at the antiresonance frequency. The first half-period was the exciting one, with the second, supplied at the appropriate moment, being the compensating one. The amplitudes of the compensating half-periods were precalculated based on a mathematical algorithm developed by the authors in their previous works. It has been shown that applying composite-waveform signals allows one to considerably reduce the duration of a signal at the receiver output as compared with the case where the emitter is excited by an electric pulse in the form of one half-period of vibration at the antiresonance frequency. Experimental data are in fair agreement with computation results.
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Korolev, M.V. and Karpel’son, A.E., Shirokopolosnye ul’trazvukovye p’ezopreobrazovateli (Wideband Ultrasonic Piezoelectric Transducers), Moscow: Mashinostroenie, 1982.
Ul'trazvukovye preobrazovateli dlya nerazrushayushchego kontrolya (Ultrasonic Transducers for Nondestructive Testing) Ermolov, I.N, Ed., Moscow: Mashinostroenie, 1986.
Konovalov, S.I. and Kuz’menko, A.G., Osobennosti impul’snykh rezhimov raboty elektroakusticheskikh p’ezoelektricheskikh preobrazovatelei (Specific Features of Pulsed Operation Modes of Electroacoustic Piezoelectric Transducers), St. Petersburg: Politekhnika, 2014.
Konovalov, S.I. and Kuz’menko, A.G., Fizicheskie osnovy raboty i proektirovaniya impul’snykh p’ezopreobrazovatelei v zadachakh izmereniya i kontrolya (Physical Basics of Operation and Design of Pulsed Piezoelectric Transducers in Measurement and Inspection Problems), St. Petersburg: Izd-vo SPbGETU “LETI”, 2016.
Nerazrushayushchii kontrol' /Spravochnik. V 7 t (Nondestructive Testing. A Handbook in 7 Vols.) Klyuev, V.V, Ermolov, I.N, and Lange, Yu.V, Eds., Moscow: Mashinostroenie, 2004.
Domarkas, V.I. and Kazhis, R.-I.Yu., Kontrol’no-izmeritel’nye p’ezoelektricheskie preobrazovateli (Testing and Measurement Piezoelectric Transducers), Vilnus: Mintis, 1974.
Shraiber, D.S., Ul’trazvukovaya defektoskopiya (Ultrasonic Nondestructive Testing), Moscow: Metallurgiya, 1965.
Dianov, D.B., Transmission of unsteady-state sonic signals through layered media, Izv. LETI, 1968, no. 63, pp. 114–126.
Dianov, D.B., On the unsteady-state mode operation of piezoelectric transducer, Izv. LETI, 1968, no. 63, pp. 114–126.
Dianov, D.B. and Kuz’menko, A.G., Planar piezoelectric transducer in pulsed operation modes, in “Osnovnye zadachi akustiki v sudostroenii”. Uch. posobie (Main Problems of Acoustics in Shipbuilding. A Handbook), Leningrad: LKI, 1969, part 2, ch.5.
Filipczynski, L., Properties of the X-cut quartz transducer loaded with a solid medium, Proc. II Conf. Ultrason., Warsaw: Panstw. Wydawn. Naukowe, 1957.
Gazaryan, Yu.L., Creating sonic pulse of prescribed shape using a piezoelectric plate, Akust. Zh., 1958, vol. 4, no. 1, pp. 33–36.
Konovalov, S.I. and Kuz’menko, A.G., On the possibility of reducing the duration of a transient process in an acoustic transducer using a compensating electric pulse, Russ. J. Nondestr. Test., 2014, vol. 50, no. 7, pp. 385–391.
Konovalov, S.I. and Kuz’menko, A.G., The problem of reducing a transient process in a damped piezoelectric plate operating in the pulse mode, Russ. J. Nondestr. Test., 2014, vol. 50, no. 11, pp. 642–648.
Konovalov, S.I. and Kuz’menko, A.G., On the optimization of the shapes of short-duration acoustic pulses for solving probing problems in immersion tests, Russ. J. Nondestr. Test., 2015, vol. 51, no. 2, pp. 101–107.
Konovalov, S.I. and Kuz’menko, A.G., Generating short pulses at the output of an emission–reception system when the emitter is excited with pulses with a special shape, Russ. J. Nondestr. Test., 2016, vol. 52, no. 4, pp. 197–205.
Konovalov, S.I. and Kuz’menko, A.G., On the allowance for direct piezoelectric effect when studying the pulsed operation mode of a piezoelectric emitter by d’Alambert’s method, Russ. J. Nondestr. Test., 2017, vol. 53, no. 4, pp. 286–294.
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Original Russian Text © B.Ch. Ee, R.S. Konovalov, S.I. Konovalov, A.G. Kuz’menko, I.Yu. Oshurkov, V.M. Tsaplev, 2018, published in Defektoskopiya, 2018, No. 1, pp. 33–39.
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Ee, B.C., Konovalov, R.S., Konovalov, S.I. et al. Decreasing Pulse Duration at Receiver Output under Emitter Excitation with Complex Waveforms. Russ J Nondestruct Test 54, 31–36 (2018). https://doi.org/10.1134/S1061830918010035
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DOI: https://doi.org/10.1134/S1061830918010035