10.14489/td.2018.08.pp.060-064

2018, 08 August

DOI: 10.14489/td.2018.08.pp.060-064

Rodushkin V. M., Berezin E. K.
FEATURES OF ULTRASONIC CONTROL OF STRATIFICATIONS OF THE CONNECTING ROD OF DIESEL G60 UNITS
(pp. 60-64)

Abstract. The article describes the principle of detection of bundles between a layer of antifriction material (AO20-1) and a steel base. The control procedure is described when the area of the bundle is less than the cross-sectional area of the ultrasonic beam. The technique of quality control of the connecting rod liner of diesel engines brand Г60, where as a diagnostic sign of the presence of the delamination area of 25 % of the cross-section of the ultrasonic beam, the proposed equality of the reflected pulses displayed on the screen of the flaw detector. The control of the liner on the outside with direct ultrasound input from the steel base is considered. The spatial-temporal course of the probing beam is modeled. The difference between the pulse amplitudes, measured in the flaw detector in dB, characterizing the presence of a bundle on the cross-sectional area of the ultrasonic beam due to the normalization of the amplitude of the probing beam does not depend on the compression force of the transducer, the state of acoustic contact and other factors due to the level of the probing pulse. The technique is characterized by increased stability of control readings.

Keywords: quality, ultrasonic control, insert, reflection coefficient, technique.

+ - About the Authors Click to collapse

V. M. Rodyushkin (Institute of Machine Buinding Problems Russia Academy of Science, N. Novgorod, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
E. K. Berezin (Educational Scientific Center “Ship Repair” Volga State University of Water Transport, N. Novgorod, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

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2. Ilyahinskiy A. V., Rodyushkin V. M. (2010). Ultrasonic method for controlling the bond strength of bimetallic insert layers. Defektoskopiia, (3), pp. 63-66. [in Russian language]
3. Non-destructive testing. Acoustic method of controlling the strength of the bonding of bimetal layers. General requirements. (2016). Ru Standard No. GOST 55806–2013. Moscow: Standartinform. [in Russian language]
4. Zlobin B. S., Sil'vestrov V. V., Shtertser A. A. et al. (2012). Peculiarities of the formation of a joint during the welding with an explosion of the alloy AO20-1 with steel. Izvestiya VolgGTU, 101(14), pp. 51-56. [in Russian language]

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