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Obukho Esu


Postgraduate Research Student
+44 (0)1483 686652
20A AA 03

Academic and research departments

Department of Civil and Environmental Engineering.

My publications

Publications

Obukho Esu, Ying Wang, Marios Chryssanthopoulos (2020)Vibration-based damage indicators for corrosion detection in tubular structures, In: Life-Cycle Analysis and Assessment in Civil Engineering: Towards an Integrated Vision – Proceedings of the 6th International Symposium on Life-Cycle Civil Engineering, IALCCE

An increasing number of tubular steel structures have exceeded their design service lives; hence, monitoring of these structures is crucial in preventing any unforeseen failures and corresponding catastrophic consequences - safety or economic. As is well known, vibration-based structural health monitoring (SHM) presents non-destructive methods for damage identification, though their application in corrosion problems appears somewhat limited. Furthermore, majority of the SHM techniques reported in literature deal with prismatic or beam-like members; tubular structures have received less research attention. In this paper, numerical models of a pipe in its intact and corroded conditions are built and analysed using ABAQUS®. Modal parameters extracted from analyses results are utilised to detect, locate and quantify corrosion. A potential indicator “Normalised Displacement Modeshape (NDM)” is introduced and tested alongside existing damage indicators. Results from the employed indicators are compared and the capabilities of each indicator in identification of the investigated corrosion patterns are discussed.