10.14489/td.2016.02.pp.014-026

2016, 02 February

DOI: 10.14489/td.2016.02.pp.014-026

Klyuev V.V., Bobrenko V.M., Bobrov V.T.
ACOUSTIC TENSOMETRY OF DETACHABLE JOINTS. STATE AND PROSPECTS. PART 2
(pp. 14-26)

Abstract. Split compounds are widely used in important structures and installations operating under high pressure, at loads approaching the yield strength of threaded metal parts in a vacuum space, wide temperature fluctuations, vibrations and other impacts. A review of accidents and disasters associated with detachable joints failures, leading to the depressurization of spacecrafts, gas pipelines and other objects, has shown that this leads to leakage of gas, oil, hazardous chemicals, explosions, fires, loss of life and destruction of infrastructure. The cause of abnormal situations is imperfect assembly, quality control and tightening torques of threaded connections, low measurement accuracy and uniformity of the tightening efforts of individual elements of detachable joints. Analysis of the results of the study of physics processes, methodologies and technologies of the acoustic strain measurement on the example of the threaded connections of the power equipment allows us to recommend this method for widespread use. It is noted that a large-scale use of acoustic methods of efforts tightening control, along with the improvement of the design and manufacturing technology has significantly increased the reliability of the liquid rocket engines while considerably reducing the cost of testing of the design as a whole, to enter the international market of space technology. The State Standard GOST R 52889–2007 “Non-destructive testing. The acoustic method of control efforts tightening threaded connections. General requirements” developed and put into effect is the first normative document regulating the use of the method of detachable joints acoustic strain measurement. The method regulated by the standard can be used in the assembly during manufacture, installation, commissioning and maintenance works during the operation of critical structures in industry and other spheres. It is given the examples of effective use of the method as in Russian engineering and launching of American satellites as parts of American rockets. There is little attention to this method from local organizations operating critical structures with detachable joints. The authors see further development of the method, equipment and technology of acoustic strain measurement in expanding the use of information technologies, intellectualization of control process and application of ultrasonic testing of excitation without requiring the use of liquid contact.

Keywords: accident, acoustic strain measurement, acoustic diagnostics, acoustic elasticity, bearing capacity, detachable connection, threaded parts, depressurization, leakage, liquid rocket engines, hydroelectric power stations, rail fasteners, torque bolts and studs, intellectualization, the loss of personnel, material losses.

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V. V. Klyuev, V. M. Bobrenko, V. T. Bobrov
JSC “Research Institute imaging MSIA “Spectrum”, Moscow, Russia. E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

1. Averbuckh I. I., Bobrenko V. M., Detkov A. J. et al. (1973). Devices for testing physical and mechanical parameters of materials and constructions. VII Int. Conf. NDT. Warszawa, Poland, I – 33.
2. Bobrenko V. M. (1978). Diе akustoelastizitat und diе besonderheitenihrer praktischen anwendung auf diе spannungsmessung. Int. Symp. Ultraschall Mater. Dresden, pp. 13- 14.
3. Bobrenko V. M., Vangeli M. S., Kutsenko A. N. (1981). Acoustic methods of testing stress state of the machine parts material. Kishinev: Shtiintsa.
4. Bobrenko V. M., Kutsenko A. N., Rudakov A. S. (1982). The acoustoelasticity and problems of the acoustic strain gauging in the non-destructive testing. X.Int. Conf. NDT, Moscow, V. 2, pp. 171-178.
5. Bobrenko V. M., Kutsenko A. N. (1982). Acoustic elasticity coefficients of ultrasonic waves and their application in non-destructive testing. IUTAM Symp. Nonlinear deformation on waves. Tallinn.
6. Bobrenko V. M., Kutsenko A. N. (1990). Elastic waves in case of shear strain. Prikladnaia mekhanika, ХХVI(I), pp. 77-82.
7. Bobrenko V. M., Vangeli M. S., Kutsenko A. N. (1991). Acoustic strain measurement (Theory and Practice). Kishinev: Shtiintsa.
8. Bobrenko V. M., Kutsenko A. N., Rudakov A. S. (2001). Acoustic strain measurement. Kontrol'. Diagnostika, (4), pp. 23-39.
9. Bobrenko V. M., Kutsenko A. N., Malakhov V. P. (1997). Acoustic testing of mechanical stresses. Odessa: Astroprint.
10. Klyuev V.V. (Ed.), Anisimov V. A., Katorgin B. I., Kutsenko A. N. (2006). 2nd Ed. (revised and supplemented). Nondestructive testing: handbook. In 8 volumes. Vol. 4. In 3 books. Book. 1. Acoustic strain measurement. Moscow: Mashinostroenie.
11. Moiseev V. A., Tarasov V. A. (Ed.), Kolmykov V. A., Filimonov A. S. (2008). Production technology of liquid rocket engines: textbook. Moscow: Izdatel'stvo MGTU im. N. E. Baumana.
12. Bobrenko V. M. (2004). Design and creation of methods and means of acoustic strain measurement of detachable joints of aerospace units. PhD thesis. Moscow: RII MSIA «Spectrum».
13. Bobrenko V. M., Bobrov V. T., Gul'shin A. V. (2010). Methods and technologies of strain measurement of detachable joints in critical structures in terms of production, installation and operation. MEGATECH: Novye tekhnologii v promyshlennoi diagnostike i bezopasnosti, (6), pp. 8-20.
14. Bobrenko V. M., Bobrov V. T., Gul'shin A. V. (2014). Analysis of the stress loading of detachable joints with acoustic method. Zavodskaia laboratoriia. Diagnostika materialov, 80(7), pp. 60-69.
15. Hajime Yasui, Koichiro Kawashima. (2000). Acoustoelastic measurement of bolt axial load with velocity ratio method. 15th World Conference on NDT. Rome (Italy), Thes., p. 79. Available at: http://www.ndt.net/article/ wcndt00/papers/idn083/idn083.htm
16. Samokrutov A. A., Bobrov V. T., Shevaldykin V. G. et al. (2005). Acoustic methods and means of research of stress-strain state of structures and facilities. V mire NK, 27(1), pp. 22-26.
17. Nondestructive testing. Acoustic method for testing tightening force of threaded joints. General requirements. (2009). Ru Standard No. GOST R 52889–2007. Moscow: Standartinform.
18. Bobrov V. T., Kozlov V. N., Bobrenko V. М. et al. (2010). Standard GOST R 52889-2007. Nondestructive testing. Acoustic method for testing tightening force of threaded joints. General requirements. 10th European Conference on Non-Destructive Testing. Moscow, 2010, June 7-11. Abstracts, Moscow: Izdatel'skii dom «Spektr», pp. 411-413.
19. The probe New Horizons began autonomous journey to Pluto. Available at: http:// www.originweb.info/news/ 2006/01/20_zond_new_horizons_nachal_avtonomnoe _pute shestvie_k_plutonu.html
20. RD-180, liquid rocket engine. Available at: http://www. arms-expo.ru/armament/samples/1065/66076/
21. The engine that came in from the cold. Available at: https://www.youtube.com/watch?v=LV1k1PlpE9k
22. NASA probe approached the Pluto on record distance. Available at: http://www.interfax.ru/world/453656

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