| 碳纤维增强环氧树脂复合材料修复N80Q钢管的力学性能 |
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| 引用本文： | 刘培启,耿发贵,刘岩,古海波,金鑫,韩冰.碳纤维增强环氧树脂复合材料修复N80Q钢管的力学性能[J].复合材料学报,2020,37(4):808-815. |
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| 作者姓名： | 刘培启 耿发贵 刘岩 古海波 金鑫 韩冰 |
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| 作者单位： | 1.大连理工大学 化工学院, 大连 116033; |
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| 基金项目： | 国家重点研发计划（2017YFC0805603） |
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| 摘 要： | 为考察碳纤维增强环氧树脂复合材料对环状腐蚀的N80Q钢管的修复效果,采用数值分析和全尺寸爆破试验对修复后的力学性能进行了研究,分析了缺陷轴向长度、缺陷深度和修复层厚度对修复效果的影响。结果表明:碳纤维增强环氧树脂复合材料对N80Q钢管的修复效果显著,经试验测试, 6 mm深缺陷的N80Q管道由碳纤维增强环氧树脂复合材料修复后爆破压力值提高了0.985倍;缺陷轴向长度对N80Q管道修复后的强度影响较小,随着缺陷轴向长度的增加,管道爆破压力值仅下降了3.5%;而缺陷深度对N80Q管道修复后的强度影响较明显,与无缺陷管道相比, 6 mm深缺陷管道修复后爆破压力值下降了9.9%, 7 mm深缺陷管道修复后爆破压力值下降了20.6%。
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| 关 键 词： | 复合材料 缺陷修复 N80Q钢管 爆破试验 数值分析 |
| 收稿时间： | 2019-04-26 |
Mechanical properties of N80Q steel pipe repaired by carbon fiber reinforced epoxy resin composites |
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| LIU Peiqi,GENG Fagui,LIU Yan,GU Haibo,JIN Xin,HAN Bing.Mechanical properties of N80Q steel pipe repaired by carbon fiber reinforced epoxy resin composites[J].Acta Materiae Compositae Sinica,2020,37(4):808-815. |
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| Authors: | LIU Peiqi GENG Fagui LIU Yan GU Haibo JIN Xin HAN Bing |
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| Affiliation: | 1.School of Chemical Engineering, Dalian University of Technology, Dalian 116033, China;2.Dalian Boiler and Pressure Vessel Inspection & Testing Institute CO. LTD., Dalian 116012, China |
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| Abstract: | In order to investigate the repair effect of carbon fiber reinforced epoxy resin composite on the ring-corroded N80Q steel pipe, the mechanical properties of the repaired steel were studied by numerical analysis and full-scale blasting test. The effects of axial length, depth and repair layer thickness on the repairing effect were analyzed. The results show that the carbon fiber/epoxy composite has a remarkable effect on repairing the N80Q steel pipe and the bursting pressure value of the 6 mm deep defect pipe is raised by 0.985 times after repaired by the carbon fiber/epoxy composite; the axial length of the defect has little effect on the strength of the N80Q steel pipe after repaired by the carbon fiber/epoxy, and as the axial length of the defect increases, the pipe burst pressure value only gets reduced by 3.5%; the depth of the defect has an obvious effect on the strength of the N80Q steel pipe after repair:Compared with the non-defective pipe, the burst pressure value of the 6 mm deep defect pipeline is reduced by 9.9%, and the burst pressure of the 7 mm deep defect pipe is reduced by 20.6%. |
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| Keywords: | composites defect repair N80Q steel pipe blasting test numerical analysis |
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