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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


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