Laser-Based Inspection of Internal Geometry of Industrial Pipes in Pigging Procedure

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Hadavand, Majid | 2019

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 51836 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Khodaygan, Saeed
Abstract:
Along with improvement of technology and need for access to energy resources, existence of pipelines such as gas, oil and water pipes is vital for our lives. These pipes will be eroded and damaged over time. With the prediction of the defects and tracking of pipeline paths, the probability of sudden damages is greatly reduced. In this research, at first various non-destructive methods of monitoring the pipelines are investigated and it is shown that the laser method is the most comprehensive and non-destructive inspection method and then the background of the chosen method is examined. Also, the hardware aspect of the system and the proper layout of the laser sensors are determined on the system. After that a complete mathematical model and an algorithm is proposed for it which can be used to analyze the data obtained from the laser sampling creates image of the pipe internal surface and using this method identifies the defects found at the pipe surface. In the fourth section, a pipe with specific geometric deflection is examined with the proposed method and algorithm and its results show the correctness of the proposed method
Keywords:
Pipelines Health Monitoring ; Nondestructive Inspection (NDI) ; Intelligent Pipe Inspection Geometry (PIG) ; Laser Sensor ; Image Processing

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