PSI - Issue 59

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2023) 000 – 000

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 59 (2024) 367–371

© 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of DMDP 2023 Organizers Abstract The study applies thermographic analysis to assess integrity of a steel water pipe after an operation for nine years, helping to identify potential internal defects, such as corrosion and pollution, through controlled heating and cooling cycle. Using a Fluke Ti32 thermographic camera, detailed thermal images capture temperature variations, indicating structural irregularities. Linear profiling of thermograms reveals specific areas of concern, suggesting potential pollution or wall damage. Supplementing this, fractal analysis using Clarke's triangular prism classic method is applied to map fractal dimensions during a heating-cooling cycle. Observed correlations between temperature fluctuations, thermal gradients, and fractal dimensions contribute to understanding dynamic temperature changes. Results show the effectiveness of thermographic imaging in identifying temperature irregularities and highlight the promising utility of fractal dimension analysis as a complimentary method for comprehensive integrity assessment in industrial contexts. © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of DMDP 2023 Organizers Keywords: pipe; thermography; fractal 1. Introduction Pipeline water systems tend to deteriorate with time. It does not matter, if it is an urban pipeline system for water or sewage in apartment blocks, or some cooling water pipes at spray ponds at the Nuclear Power Plant, main task is VII International Conference “In -service Damage of Materials: Diagnostics and Prediction ” (DMDP 2023) Thermographic Analysis of Damaged and Polluted Water Pipe Enhanced with Fractal Methods S.E. Donets, V.V. Lytvynenko, E.M. Prokhorenko, O.A. Startsev*, V.V. Shatov Institute of Electrophysics and Radiation Technologies National Academy of Science of Ukraine, P.O. 8812, Chernyshevsky Str., 28, Kharkiv, 61002, Ukraine

* Corresponding author. Tel./Fax: +380577041360. E-mail address: startsev-alex@ukr.net

2452-3216 © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of DMDP 2023 Organizers

2452-3216 © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of DMDP 2023 Organizers 10.1016/j.prostr.2024.04.052