Numerical analysis on failure pressure of pipelines with multi-corroded region

The underground gas pipeline is vulnerable which can explode any time. The percentage of the pipeline fails due to the pressure may cause fatal destruction. Hence, the predictions of pipeline burst pressure in the early stage are very important in order to provide assessment for future inspection, r...

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Main Author:	Ng, Yew Keong
Format:	Undergraduates Project Papers
Language:	English
Published:	2013
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/8463/ http://umpir.ump.edu.my/id/eprint/8463/ http://umpir.ump.edu.my/id/eprint/8463/1/cd8157.pdf

id	ump-8463
recordtype	eprints
spelling	ump-84632015-11-13T02:07:19Z http://umpir.ump.edu.my/id/eprint/8463/ Numerical analysis on failure pressure of pipelines with multi-corroded region Ng, Yew Keong TA Engineering (General). Civil engineering (General) The underground gas pipeline is vulnerable which can explode any time. The percentage of the pipeline fails due to the pressure may cause fatal destruction. Hence, the predictions of pipeline burst pressure in the early stage are very important in order to provide assessment for future inspection, repair and replacement activities. This thesis is to study the effect of multiple corrosion defects on failure pressure for API X42 steel and validate the results with available design codes. The project implicates analysis by using MSC Patran 2008 r1 software as a pre-processor and MSC Marc 2008 r1 software as a solver. Half of the pipe was simulated by fully applying symmetrical condition. The pipe is modeled in 3-D with outer diameter 381 mm, wall thickness of 17.5 mm and different defect parameter. In this analysis, SMCS and von Mises stress used to predict the failure pressure. The result shows that the failure pressure increases when the distance between defect increases but decreases when the defect length increases. SMCS always shows a higher value compared to von Mises. The design codes applied only when the distance between defect is small enough that multiple defects acts as a single defect. Meanwhile, value of FEA is the highest among all the design codes. 2013-06 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/8463/1/cd8157.pdf Ng, Yew Keong (2013) Numerical analysis on failure pressure of pipelines with multi-corroded region. Faculty of Mechanical Engineering, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:83020&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Ng, Yew Keong Numerical analysis on failure pressure of pipelines with multi-corroded region
description	The underground gas pipeline is vulnerable which can explode any time. The percentage of the pipeline fails due to the pressure may cause fatal destruction. Hence, the predictions of pipeline burst pressure in the early stage are very important in order to provide assessment for future inspection, repair and replacement activities. This thesis is to study the effect of multiple corrosion defects on failure pressure for API X42 steel and validate the results with available design codes. The project implicates analysis by using MSC Patran 2008 r1 software as a pre-processor and MSC Marc 2008 r1 software as a solver. Half of the pipe was simulated by fully applying symmetrical condition. The pipe is modeled in 3-D with outer diameter 381 mm, wall thickness of 17.5 mm and different defect parameter. In this analysis, SMCS and von Mises stress used to predict the failure pressure. The result shows that the failure pressure increases when the distance between defect increases but decreases when the defect length increases. SMCS always shows a higher value compared to von Mises. The design codes applied only when the distance between defect is small enough that multiple defects acts as a single defect. Meanwhile, value of FEA is the highest among all the design codes.
format	Undergraduates Project Papers
author	Ng, Yew Keong
author_facet	Ng, Yew Keong
author_sort	Ng, Yew Keong
title	Numerical analysis on failure pressure of pipelines with multi-corroded region
title_short	Numerical analysis on failure pressure of pipelines with multi-corroded region
title_full	Numerical analysis on failure pressure of pipelines with multi-corroded region
title_fullStr	Numerical analysis on failure pressure of pipelines with multi-corroded region
title_full_unstemmed	Numerical analysis on failure pressure of pipelines with multi-corroded region
title_sort	numerical analysis on failure pressure of pipelines with multi-corroded region
publishDate	2013
url	http://umpir.ump.edu.my/id/eprint/8463/ http://umpir.ump.edu.my/id/eprint/8463/ http://umpir.ump.edu.my/id/eprint/8463/1/cd8157.pdf
first_indexed	2023-09-18T22:06:03Z
last_indexed	2023-09-18T22:06:03Z
_version_	1777414715688878080

Numerical analysis on failure pressure of pipelines with multi-corroded region

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