Acoustic Emission study of pressure vessels material degradation processes after long-term operation in the refinery industry / Igor Lyasota, Tomasz Ryncarz, Barbara Kozub // W: EWGAE 2018 : 33rd European ... więcej

Acoustic Emission study of pressure vessels material degradation processes after long-term operation in the refinery industry / Igor Lyasota, Tomasz Ryncarz, Barbara Kozub // W: EWGAE 2018 : 33rd European Conference on Acoustic Emission Testing, 12-14 September 2018, Senlis, France : conference proceedings [Dokument elektroniczny] / European Working Group on Acoustic Emission. – [Senlis] : Cetim, 2018. – [11] s. : rys. – Tryb dostępu: http://www.ewgae2018.com/wp-content/uploads/2018/09/EWGAE-Conference-Proceedings_2018-1.pdf. – Oznaczenie ref./art.: 07. – Bibliogr. 17 poz., Abstr. – Ścieżka dostępu: Pressure Vessels Room 7

The paper presents results obtained from the complex destructive laboratory investigations on real pressure vessels’ carbon steels after long-term operation in the refinery industry. Tested materials ... więcej

The paper presents results obtained from the complex destructive laboratory investigations on real pressure vessels’ carbon steels after long-term operation in the refinery industry. Tested materials contained structural defects. Detailed metallographic tests and static tensile tests were realized firstly. Then, complex tensile tests with acoustic emission signals registration, and material microstructure changes observation by light microscopy were conducted. The correlations between acoustic emission signals parameters and material microstructure damage during the tensile tests were developed. At the next stage, the destructive pressure tests with acoustic emission recording of real cylindrical pressure vessel were realized. The vessel has been operated in the refinery industry for 45 years. A lot of corrosion damages were present on the inner surface of the vessel shell as a result of long-term operation. The material’s microstructure of some shall plates was coarse-grained, which arose from improper heat treatment during plates manufacturing. The investigations, presented in this paper, were realised within the project of LIDER VII Programme financed by the National Centre for Research and Development of Poland.