On the Optimization of Machined VSD Position for Repaired Pipes
Keywords:
pipes, volumetric defects, optimization
Abstract
To be kept in use, pipelines with Volumetric Surface Defects (VSDs) must be evaluated and, if necessary, repaired. The first step in the repair process is machining the defect area. In all cases, the machined defect has a rectangular shape, with edges parallel/perpendicular to the pipe axis. We propose a novel approach: the VSD is scanned, the image is then processed using segmentation techniques, the VSD contour is detected, and finally, a family of rectangles with minimal area enclosing the VSD is defined. After that, a Finite Element Analysis is performed for each machined VSD, and an optimal case is selected.
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References
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[2]. Lambrescu I., Dinita A., Minescu M., About the Influence of the Corrosion Defect Geometry on Repaired Pipes Stress Distribution, J. Pressure Vessel Technol., 143(1), 011802, /doi.org/10.1115/1.4047877, Feb 2021.
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[4]. Su C.-I., Li X., Zhou J., Failure Pressure Analysis of Corroded Moderate-to-High Strength Pipelines, China Ocean Engineering, vol. 30, issue 1, p. 69-82.
[5]. ***, ISO 24817:2015. Petroleum, petrochemical and natural gas industries — Composite repairs for pipework — Qualification and design, installation, testing and inspection.
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[7]. Lambrescu I., Dinita A., Minescu M., Considerations on the Evaluation and Management of Volumetric Surface Defects on Pipelines Using 3D Scanning and Finite Element Analysis, Revista de chimie, 71 (4), p. 19-28, 2020.
[8]. Lambrescu I., Minescu M., Dinita A., Implementing of 3D Scanning Techniques in the Analytical and Numerical Assessment of Pipelines with Volumetric Surface Defects, Revista de Chimie, 70, no. 12, 2019.
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[10]. Song Y. Q., Gao C. Y., Application of MATLAB on Moire image processing, Proceedings of the 5th International Conference on Nonlinear Mechanics, p. 854-856, 2007.
[11]. Magrab E. B., et al., An Engineer's Guide to MATLAB, 3e: with Applications from Mechanical, Aerospace, Electrical, and Civil Engineering, Prentice Hall, 2011.
[12]. Tewari P., Surbhi P., Evaluation of some recent Image segmentation method's, 3rd International Conference on Computing for Sustainable Global Development (INDIACom), Proceedings of the 10th Indiacom, 3rd International Conference on Computing for Sustainable Global Development, p. 3741-3747, 2016.
[13]. Song Y. H., Yan H., Image Segmentation Techniques Overview, Asia Modelling Symposium (AMS) / 11th International Conference on Mathematical Modelling and Computer Simulation, p. 103-107, 2017.
[14]. Jungyeom K., et al., Integrity assessment of a corroded API X70 pipe with a single defect by burst pressure analysis, Engineering Failure Analysis, vol. 57, p. 553-561, November 2015.
[15]. Zienkiewicz O. C., Taylor R. L., Finite Element Method for Solid and Structural Mechanics, Sixth Edition. Elsevier BH, Oxford, UK, 2006.
[16]. Nasedkina A. A., et al., Static Finite Element Analysis of a Pipeline with Volumetric Surface Defects Using MPC Approach, International Conference on Physics and Mechanics of New Materials and their Applications (PHENMA 2015), At Azov, Russia.
[17]. Chiodo M. S., Ruggieri C., Failure assessments of corroded pipelines with axial defects using stress-based criteria: Numerical studies and verification analyses, International Journal of Pressure Vessels and Piping, 86, p. 164-176, 2009.
[18]. Liu H., Khan F., Thodi P., Revised burst model for pipeline integrity assessment, Engineering failure analysis, 80, p. 24-38, 2017.
[19]. da Costa Matos H. S., et al., Failure Analysis of Corroded Pipelines Reinforced with Composite Repair Systems, Engineering Failure Analysis, vol. 59, p. 223-236, 2016.
[20]. ***, ANSYS – Finite Element Analysis, Release 19.0 User Guide, 2018.
[21]. Lim K. S., et al., Behaviour of Steel Pipelines with Composite Repairs Analyzed using Experimental and Numerical Approaches, Thin-Walled Structures 139, p. 321-333, 2019.
[22]. Noor N., et al., An Overview of Corroded Pipe Repair Techniques Using Composite Materials, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering. vol. 10, no. 1, p. 19-25, 2016.
[2]. Lambrescu I., Dinita A., Minescu M., About the Influence of the Corrosion Defect Geometry on Repaired Pipes Stress Distribution, J. Pressure Vessel Technol., 143(1), 011802, /doi.org/10.1115/1.4047877, Feb 2021.
[3]. Chebakov M. J., et al., Experimental and Numerical Research on Renovated Pipeline Prototype with Durface Defect, Nondestructive Testing and Repair of Pipelines, E. N. Barkanov, A. Dumitrescu, I. A. Parinov, eds. Springer International Publishing AG, Cham, Switzerland, p. 353-368, 2018.
[4]. Su C.-I., Li X., Zhou J., Failure Pressure Analysis of Corroded Moderate-to-High Strength Pipelines, China Ocean Engineering, vol. 30, issue 1, p. 69-82.
[5]. ***, ISO 24817:2015. Petroleum, petrochemical and natural gas industries — Composite repairs for pipework — Qualification and design, installation, testing and inspection.
[6]. Barkanov E. N., Dumitrescu A., Parinov I. A., Nondestructive Testing and Repair of Pipelines, Springer International Publishing AG, Cham, Switzerland.
[7]. Lambrescu I., Dinita A., Minescu M., Considerations on the Evaluation and Management of Volumetric Surface Defects on Pipelines Using 3D Scanning and Finite Element Analysis, Revista de chimie, 71 (4), p. 19-28, 2020.
[8]. Lambrescu I., Minescu M., Dinita A., Implementing of 3D Scanning Techniques in the Analytical and Numerical Assessment of Pipelines with Volumetric Surface Defects, Revista de Chimie, 70, no. 12, 2019.
[9]. ***, https://support.hp.com/us-en/product/details/hp-3dstructured-light-scanner/model/14169439.
[10]. Song Y. Q., Gao C. Y., Application of MATLAB on Moire image processing, Proceedings of the 5th International Conference on Nonlinear Mechanics, p. 854-856, 2007.
[11]. Magrab E. B., et al., An Engineer's Guide to MATLAB, 3e: with Applications from Mechanical, Aerospace, Electrical, and Civil Engineering, Prentice Hall, 2011.
[12]. Tewari P., Surbhi P., Evaluation of some recent Image segmentation method's, 3rd International Conference on Computing for Sustainable Global Development (INDIACom), Proceedings of the 10th Indiacom, 3rd International Conference on Computing for Sustainable Global Development, p. 3741-3747, 2016.
[13]. Song Y. H., Yan H., Image Segmentation Techniques Overview, Asia Modelling Symposium (AMS) / 11th International Conference on Mathematical Modelling and Computer Simulation, p. 103-107, 2017.
[14]. Jungyeom K., et al., Integrity assessment of a corroded API X70 pipe with a single defect by burst pressure analysis, Engineering Failure Analysis, vol. 57, p. 553-561, November 2015.
[15]. Zienkiewicz O. C., Taylor R. L., Finite Element Method for Solid and Structural Mechanics, Sixth Edition. Elsevier BH, Oxford, UK, 2006.
[16]. Nasedkina A. A., et al., Static Finite Element Analysis of a Pipeline with Volumetric Surface Defects Using MPC Approach, International Conference on Physics and Mechanics of New Materials and their Applications (PHENMA 2015), At Azov, Russia.
[17]. Chiodo M. S., Ruggieri C., Failure assessments of corroded pipelines with axial defects using stress-based criteria: Numerical studies and verification analyses, International Journal of Pressure Vessels and Piping, 86, p. 164-176, 2009.
[18]. Liu H., Khan F., Thodi P., Revised burst model for pipeline integrity assessment, Engineering failure analysis, 80, p. 24-38, 2017.
[19]. da Costa Matos H. S., et al., Failure Analysis of Corroded Pipelines Reinforced with Composite Repair Systems, Engineering Failure Analysis, vol. 59, p. 223-236, 2016.
[20]. ***, ANSYS – Finite Element Analysis, Release 19.0 User Guide, 2018.
[21]. Lim K. S., et al., Behaviour of Steel Pipelines with Composite Repairs Analyzed using Experimental and Numerical Approaches, Thin-Walled Structures 139, p. 321-333, 2019.
[22]. Noor N., et al., An Overview of Corroded Pipe Repair Techniques Using Composite Materials, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering. vol. 10, no. 1, p. 19-25, 2016.
Published
2025-06-15
How to Cite
1.
LAMBRESCU I. On the Optimization of Machined VSD Position for Repaired Pipes. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15Jun.2025 [cited 23Oct.2025];48(2):25-1. Available from: https://gup.ugal.ro/ugaljournals/index.php/mms/article/view/9236
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