Finite Element Analysis of Composite Repair for Damaged Steel Pipeline
Carbon fiber reinforced polymer (CFRP) matrix composite overwrap repair systems have been introduced and accepted as an alternative repair system for steel pipeline. This paper aimed to evaluate the mechanical behavior of damaged steel pipeline with CFRP repair using finite element (FE) analysis. Tw...
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doaj-e02b4b34df6744d7b0d8c439084ae3b22021-03-06T00:03:34ZengMDPI AGCoatings2079-64122021-03-011130130110.3390/coatings11030301Finite Element Analysis of Composite Repair for Damaged Steel PipelineJiaqi Chen0Hao Wang1Milad Salemi2P. N. Balaguru3Department of Civil Engineering, Central South University, Changsha 410075, ChinaDepartment of Civil and Environmental Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USADepartment of Civil and Environmental Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USADepartment of Civil and Environmental Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USACarbon fiber reinforced polymer (CFRP) matrix composite overwrap repair systems have been introduced and accepted as an alternative repair system for steel pipeline. This paper aimed to evaluate the mechanical behavior of damaged steel pipeline with CFRP repair using finite element (FE) analysis. Two different repair strategies, namely wrap repair and patch repair, were considered. The mechanical responses of pipeline with the composite repair system under the maximum allowable operating pressure (MAOP) was analyzed using the validated FE models. The design parameters of the CFRP repair system were analyzed, including patch/wrap size and thickness, defect size, interface bonding, and the material properties of the infill material. The results show that both the stress in the pipe wall and CFRP could be reduced by using a thicker CFRP. With the increase in patch size in the hoop direction, the maximum von Mises stress in the pipe wall generally decreased as the maximum hoop stress in the CFRP increased. The reinforcement of the CFRP repair system could be enhanced by using infill material with a higher elastic modulus. The CFRP patch tended to cause higher interface shear stress than CFRP wrap, but the shear stress could be reduced by using a thicker CFRP. Compared with the fully bonded condition, the frictional interface causes a decrease in hoop stress in the CFRP but an increase in von Mises stress in the steel. The study results indicate the feasibility of composite repair for damaged steel pipeline.https://www.mdpi.com/2079-6412/11/3/301composite repairCFRPpipelinefinite element modelburst pressure |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jiaqi Chen Hao Wang Milad Salemi P. N. Balaguru |
spellingShingle |
Jiaqi Chen Hao Wang Milad Salemi P. N. Balaguru Finite Element Analysis of Composite Repair for Damaged Steel Pipeline Coatings composite repair CFRP pipeline finite element model burst pressure |
author_facet |
Jiaqi Chen Hao Wang Milad Salemi P. N. Balaguru |
author_sort |
Jiaqi Chen |
title |
Finite Element Analysis of Composite Repair for Damaged Steel Pipeline |
title_short |
Finite Element Analysis of Composite Repair for Damaged Steel Pipeline |
title_full |
Finite Element Analysis of Composite Repair for Damaged Steel Pipeline |
title_fullStr |
Finite Element Analysis of Composite Repair for Damaged Steel Pipeline |
title_full_unstemmed |
Finite Element Analysis of Composite Repair for Damaged Steel Pipeline |
title_sort |
finite element analysis of composite repair for damaged steel pipeline |
publisher |
MDPI AG |
series |
Coatings |
issn |
2079-6412 |
publishDate |
2021-03-01 |
description |
Carbon fiber reinforced polymer (CFRP) matrix composite overwrap repair systems have been introduced and accepted as an alternative repair system for steel pipeline. This paper aimed to evaluate the mechanical behavior of damaged steel pipeline with CFRP repair using finite element (FE) analysis. Two different repair strategies, namely wrap repair and patch repair, were considered. The mechanical responses of pipeline with the composite repair system under the maximum allowable operating pressure (MAOP) was analyzed using the validated FE models. The design parameters of the CFRP repair system were analyzed, including patch/wrap size and thickness, defect size, interface bonding, and the material properties of the infill material. The results show that both the stress in the pipe wall and CFRP could be reduced by using a thicker CFRP. With the increase in patch size in the hoop direction, the maximum von Mises stress in the pipe wall generally decreased as the maximum hoop stress in the CFRP increased. The reinforcement of the CFRP repair system could be enhanced by using infill material with a higher elastic modulus. The CFRP patch tended to cause higher interface shear stress than CFRP wrap, but the shear stress could be reduced by using a thicker CFRP. Compared with the fully bonded condition, the frictional interface causes a decrease in hoop stress in the CFRP but an increase in von Mises stress in the steel. The study results indicate the feasibility of composite repair for damaged steel pipeline. |
topic |
composite repair CFRP pipeline finite element model burst pressure |
url |
https://www.mdpi.com/2079-6412/11/3/301 |
work_keys_str_mv |
AT jiaqichen finiteelementanalysisofcompositerepairfordamagedsteelpipeline AT haowang finiteelementanalysisofcompositerepairfordamagedsteelpipeline AT miladsalemi finiteelementanalysisofcompositerepairfordamagedsteelpipeline AT pnbalaguru finiteelementanalysisofcompositerepairfordamagedsteelpipeline |
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