2020 №02 (03) DOI of Article
2020 №02 (05)

Technical Diagnostics and Non-Destructive Testing 2020 #02
Technical Diagnostics and Non-Destructive Testing #2, 2020, pp. 26-30

Service properties of 09G2S, 14KHGS steels and steel 20 after long-term operation

S.A. Nedoseka, A.Ya. Nedoseka, M.A. Yaremenko, M.A. Ovsienko
E.O. Paton Electric Welding Institute of NASU, 11 Kazymyr Malevych, Kyiv, 03150. E-mail: office@paton.kiev.ua

09G2S, 14KhGS steels and steel 20 are on the list of those the most widely applied for building structure fabrication. The majority of gas pipelines are also made exactly from these steels. Changing the properties of these materials under diverse operating conditions, taking into account the time and violation of operating conditions, is of considerable interest. Investigations show that the environment and operating conditions, as well as the product transported by the pipeline, have a quite significant role in the change of their properties over time. A technology based on acoustic emission, can help reveal the finest service properties of these materials. Investigations presented below are devoted to AE application for these purposes. 15 Ref., 5 Fig.
Keywords: acoustic emission, AE activity, damage, material fracture, impact toughness, load

Received: 05.11.2019


1. Nedoseka, A.Ya., Nedoseka, S.A. (2020) Fundamentals of design and diagnostics of welded structures. 5th Ed. Ed. by B.E. Paton. Kiev, Indprom [in Russian].
2. Bridgman, N. (1955) Investigation of high plastic deformations and ruptures. Moscow, Inostr. Lit-ra [in Russian].
3. Volkov, V.A. (1980) Main results of an All-Union basic experiment of low-strength steel fracture mechanics. In book: Problems of fracture of metals. Moscow, MDNTN, 3-22 [in Russian].
4. Lebedev, A.A., Chausov, N.G. (1988) Express-method of assessment of crack resistance of ductile materials. Kiev, AS of Ukr.SSR [in Russian].
5. Nedoseka, A.Ya., Nedoseka, S.A. (2014) Features of application of acoustic emission method at destructive testing of materials. Tekh. Diagnost. i Nerazrush. Kontrol, 2, 3-11 [in Russian].
6. Nedoseka, A.Ya., Nedoseka, S.A., Markashova, L.I. et al. (2018) Investigation by acoustic emission method of the kinetics of damage accumulation at fracture of materials. Ibid., 3, 3-13 [in Ukrainian]. https://doi.org/10.15407/tdnk2018.03.01
7. Nedoseka, A.Ya., Nedoseka, S.A., Ovsienko, M.A. et al. (2016) Testing of pressure vessels by an international expert team. Ibid., 3, 3-10 [in Russian]. https://doi.org/10.15407/tdnk2016.03.01
8. Nedoseka, S.A. (2007) Forecasting the fracture by the data of acoustic emission. Ibid., 2, 3-9 [in Russian].
9. Nedoseka, S.A., Nedoseka, A.Ya. (2010) Integrated assessment of damage level and residual life of metals with certain operating life. Ibid., 9-16 [in Russian].
10. Paton, B.E. (2012) Acoustic emission and life of structures: Theory, methods, technologies, means, application. Kiev, Indprom [in Russian].
11. Skalsky, V.R. (2003) Evaluation of accumulation of bulk damage in solids, based on acoustic emission signals. Tekh. Diagnost. i Nerazrush. Kontrol, 4, 29-36 [in Russian].
12. Chausov, N.G., Nedoseka, S.A., Lebedev, A.A. (1993) Study of kinetics of steel fracture at final stages of deformation by acoustic emission method. Problemy Prochnosti, 12, 14-21 [in Russian].
13. Stone, D.E., Dingwall, P.E. (1977) Acoustic emission parameters and their interpretation. NDT Intern., 10, 51-56 [in Russian]. https://doi.org/10.1016/0308-9126(77)90079-7
14. Nakamura, Yosion, Veach, C.L., McCauley, B.O. (1971) Amplitude distribution of acoustic emission signals. A Symposium presented at the December Committee Week American Society for Testing and Materials (Bal Harbour, 7-8 December, 1971), 164-186.
15. Tetelman, A.S., Chow, R. (1971) Acoustic emission testing and microcracking processes. A Symposium presented at the December Committee Week American Society for Testing and Materials (Bal Harbour, 7-8 December, 1971), 30-40.