Modares Mechanical Engineering

Modares Mechanical Engineering

A new method for reconstructing the inner profile of the pipe for inspection with the laser-based measuring pig

Authors
Majid Hadavand 1
Mohammad Sobhan Esfandiar 2
1 Department of Mechanical Engineering, Sharif University of technology, Tehran, Iran.
2 Department of Mechanical Engineering, Sharif University of technology, Tehran, Iran
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 paper, 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 simulation of 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 based on the proposed method and algorithm and its results show the correctness of the proposed method.
Keywords
Pipeline monitoring
non-destructive inspection
laser-based
laser sensor
Image processing

Subjects

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Modares Mechanical Engineering
Volume 18, Issue 6
October 2018
Pages 132-138