Blister test to evaluate the multiwall carbon nanotubes (MWCNT) - Woven carbon fiber-reinforced epoxy used for repairing pipelines

IF 1.7 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Multidiscipline Modeling in Materials and Structures Pub Date : 2023-07-12 DOI:10.1108/mmms-11-2022-0266
P. Ahmed, Ava Ali Kamal, Niveen Jamal Abdulkadir, B. M. Fadhil, F. Khoshnaw
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引用次数: 2

Abstract

PurposePipelines are subject to pits, holes and cracks after staying in service for a while, especially in harsh environments. To repair the pipelines, composite materials are used, due to composite materials' low cost, high-corrosion resistance and easy handling. This study aims to investigate the reliability of the blister test for evaluating the bonding strength of multiwall carbon nanotube (MWCNT) on woven carbon-reinforced epoxy.Design/methodology/approach Flexural, hardness and Izod impact tests were used to evaluate MWCNT effect on the epoxy by adding different amounts, 0.2, 0.4, 0.6, 0.8 and 1 wt. %, of MWCNT, to be compared with pure epoxy.FindingsThe results showed that 0.8 wt.% gives the highest strength. The experimental results of 0.8 wt.% MWCNT reinforced carbon composite was compared with the finite element model under blister test, and the results showed high similarities.Originality/valueEvaluation of the reliability and the advantages of MWCNT considering the high aspect ratio and high tensile strength, which is more than 15 times compared to steel, MWCNT enhances the strength, stiffness and toughness of epoxy used as a matrix in repairing pipelines, which leads to an increase in the resistance of composite materials against oil internal pressure before delamination.
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泡罩试验评估多壁碳纳米管(MWCNT) -编织碳纤维增强环氧树脂用于修复管道
用途管道在使用一段时间后,特别是在恶劣的环境中,会出现坑洞和裂缝。由于复合材料成本低、耐腐蚀性强、易于搬运,因此在管道修复中采用复合材料。本研究旨在探讨吸塑试验评价多壁碳纳米管(MWCNT)与编织碳增强环氧树脂结合强度的可靠性。设计/方法/方法:通过添加不同数量的MWCNT(0.2、0.4、0.6、0.8和1% wt. %)来评估MWCNT对环氧树脂的影响,并与纯环氧树脂进行比较。结果表明,0.8 wt.%的强度最高。将0.8% wt.% MWCNT增强碳复合材料的实验结果与有限元模型进行了泡罩试验,结果具有较高的相似性。MWCNT具有高长径比和高抗拉强度,是钢的15倍以上,提高了环氧树脂作为管道修复基质的强度、刚度和韧性,从而提高了复合材料在分层前抗油内压的能力。
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来源期刊
CiteScore
3.70
自引率
5.00%
发文量
60
期刊介绍: Multidiscipline Modeling in Materials and Structures is published by Emerald Group Publishing Limited from 2010
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