Fracture crack study in offshore pipeline

Global demand for fossil fuels has been on the rise and the need for offshore pipelines are of great importance. In the recent years, with the increase of energy consumption, it is inevitable that the cost has increased tremendously. Offshore pipeline is one of the most commonly used transport syste...

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Main Author: Muhammad Zaheer Syafiq Abdul Latif
Other Authors: Xiao Zhongmin
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2020
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Online Access:https://hdl.handle.net/10356/141604
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1416042023-03-04T18:56:09Z Fracture crack study in offshore pipeline Muhammad Zaheer Syafiq Abdul Latif Xiao Zhongmin School of Mechanical and Aerospace Engineering MZXIAO@ntu.edu.sg Engineering::Mechanical engineering Global demand for fossil fuels has been on the rise and the need for offshore pipelines are of great importance. In the recent years, with the increase of energy consumption, it is inevitable that the cost has increased tremendously. Offshore pipeline is one of the most commonly used transport systems and it is the most efficient and economical when it comes to transporting crude oils and natural gasses. For an offshore pipeline, it is no surprise that the structural flaws and defects are apparent. Most of these defects are due to cracks forming on the pipeline be it multiple cracks or a single crack. The formation of these cracks is due to various factors. Factors such as the environmental conditions the pipe is exposed to, for example soil conditions and corrosion, stresses such as residual stress from the manufacturing and installation process, external stress experienced due to bending and welding and secondary stresses due to soil settlement or movement [1]. The formation of these cracks due to these factors can cause a catastrophic outcome. Pipe pressure and cyclic loading effects that occur on the pipe can also result in the increase in the crack growth. There several methods like NDT, that have already been used or introduced to assess cracks. Some of these methods are usually not appropriate to be used as a method of inspection because they are not accurate when inspecting small fracture behaviours and are usually very expensive. Hence, it is essential for us to conduct an analysis and study on cracks of the offshore pipeline via simulation experiments. In our investigation, numerical simulations on fracture crack growth of offshore pipelines are carried out. More specifically a single semi elliptical surface crack. ANSYS Workbench was used to perform these simulations. Bachelor of Engineering (Mechanical Engineering) 2020-06-09T07:21:04Z 2020-06-09T07:21:04Z 2020 Final Year Project (FYP) https://hdl.handle.net/10356/141604 en B118 application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering
spellingShingle Engineering::Mechanical engineering
Muhammad Zaheer Syafiq Abdul Latif
Fracture crack study in offshore pipeline
description Global demand for fossil fuels has been on the rise and the need for offshore pipelines are of great importance. In the recent years, with the increase of energy consumption, it is inevitable that the cost has increased tremendously. Offshore pipeline is one of the most commonly used transport systems and it is the most efficient and economical when it comes to transporting crude oils and natural gasses. For an offshore pipeline, it is no surprise that the structural flaws and defects are apparent. Most of these defects are due to cracks forming on the pipeline be it multiple cracks or a single crack. The formation of these cracks is due to various factors. Factors such as the environmental conditions the pipe is exposed to, for example soil conditions and corrosion, stresses such as residual stress from the manufacturing and installation process, external stress experienced due to bending and welding and secondary stresses due to soil settlement or movement [1]. The formation of these cracks due to these factors can cause a catastrophic outcome. Pipe pressure and cyclic loading effects that occur on the pipe can also result in the increase in the crack growth. There several methods like NDT, that have already been used or introduced to assess cracks. Some of these methods are usually not appropriate to be used as a method of inspection because they are not accurate when inspecting small fracture behaviours and are usually very expensive. Hence, it is essential for us to conduct an analysis and study on cracks of the offshore pipeline via simulation experiments. In our investigation, numerical simulations on fracture crack growth of offshore pipelines are carried out. More specifically a single semi elliptical surface crack. ANSYS Workbench was used to perform these simulations.
author2 Xiao Zhongmin
author_facet Xiao Zhongmin
Muhammad Zaheer Syafiq Abdul Latif
format Final Year Project
author Muhammad Zaheer Syafiq Abdul Latif
author_sort Muhammad Zaheer Syafiq Abdul Latif
title Fracture crack study in offshore pipeline
title_short Fracture crack study in offshore pipeline
title_full Fracture crack study in offshore pipeline
title_fullStr Fracture crack study in offshore pipeline
title_full_unstemmed Fracture crack study in offshore pipeline
title_sort fracture crack study in offshore pipeline
publisher Nanyang Technological University
publishDate 2020
url https://hdl.handle.net/10356/141604
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