Three-point bending test and simulation study on pipe with crack repaired by composite material
ObjectivesIn order to study the bearing characteristics and failure modes of a cracked pipe wrapped in carbon fiber-reinforced polymer (CFRP), a three-point bending test is carried out on a cracked aluminum alloy pipe strengthened with CFRP using epoxy resin. MethodsThe reparative effects are evalua...
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| Format: | Article |
| Language: | English |
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Editorial Office of Chinese Journal of Ship Research
2021-12-01
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| Series: | Zhongguo Jianchuan Yanjiu |
| Subjects: | |
| Online Access: | http://www.ship-research.com/cn/article/doi/10.19693/j.issn.1673-3185.02408 |
| _version_ | 1818333475811360768 |
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| author | Zixian YU Wei LUO Zhiyuan SHEN Jingxi LIU |
| author_facet | Zixian YU Wei LUO Zhiyuan SHEN Jingxi LIU |
| author_sort | Zixian YU |
| collection | DOAJ |
| description | ObjectivesIn order to study the bearing characteristics and failure modes of a cracked pipe wrapped in carbon fiber-reinforced polymer (CFRP), a three-point bending test is carried out on a cracked aluminum alloy pipe strengthened with CFRP using epoxy resin. MethodsThe reparative effects are evaluated by comparing the load-displacement curves before and after the repair, and the effects of crack length and repair width and thickness on the bearing capacity and failure mode of the samples are further discussed. A three-point bending simulation model of the cracked pipe repaired by CFRP is established to simulate the failure of the adhesive layer and carbon fiber cloth. The experimental results are compared with the simulation results. ResultsThe test and simulation results show that the use of a three-layer carbon fiber cloth can effectively inhibit crack propagation. With the increase in the number and length of reinforcement layers, the ultimate bearing capacity of the sample increases. The maximum bearing capacity of samples repaired with four-layer carbon fiber cloth greatly exceeds that of uncracked pipes, but the ductility and shear bearing capacity of the pipes are reduced. For the same repair layer, the ultimate bearing capacity after repair shows a greater downward trend with the increase in crack length. ConclusionsThe results of this study have certain guidance and reference significance for cracked pipe reinforcement in engineering. |
| first_indexed | 2024-12-13T13:52:14Z |
| format | Article |
| id | doaj.art-5e6296d1ac0b431a8f942dd7272b1849 |
| institution | Directory Open Access Journal |
| issn | 1673-3185 |
| language | English |
| last_indexed | 2024-12-13T13:52:14Z |
| publishDate | 2021-12-01 |
| publisher | Editorial Office of Chinese Journal of Ship Research |
| record_format | Article |
| series | Zhongguo Jianchuan Yanjiu |
| spelling | doaj.art-5e6296d1ac0b431a8f942dd7272b18492022-12-21T23:43:06ZengEditorial Office of Chinese Journal of Ship ResearchZhongguo Jianchuan Yanjiu1673-31852021-12-0116Supp19710510.19693/j.issn.1673-3185.02408ZG2408Three-point bending test and simulation study on pipe with crack repaired by composite materialZixian YU0Wei LUO1Zhiyuan SHEN2Jingxi LIU3School of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaChina Ship Development and Design Center, Wuhan 430064, ChinaSchool of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Naval Architecture and Ocean Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaObjectivesIn order to study the bearing characteristics and failure modes of a cracked pipe wrapped in carbon fiber-reinforced polymer (CFRP), a three-point bending test is carried out on a cracked aluminum alloy pipe strengthened with CFRP using epoxy resin. MethodsThe reparative effects are evaluated by comparing the load-displacement curves before and after the repair, and the effects of crack length and repair width and thickness on the bearing capacity and failure mode of the samples are further discussed. A three-point bending simulation model of the cracked pipe repaired by CFRP is established to simulate the failure of the adhesive layer and carbon fiber cloth. The experimental results are compared with the simulation results. ResultsThe test and simulation results show that the use of a three-layer carbon fiber cloth can effectively inhibit crack propagation. With the increase in the number and length of reinforcement layers, the ultimate bearing capacity of the sample increases. The maximum bearing capacity of samples repaired with four-layer carbon fiber cloth greatly exceeds that of uncracked pipes, but the ductility and shear bearing capacity of the pipes are reduced. For the same repair layer, the ultimate bearing capacity after repair shows a greater downward trend with the increase in crack length. ConclusionsThe results of this study have certain guidance and reference significance for cracked pipe reinforcement in engineering.http://www.ship-research.com/cn/article/doi/10.19693/j.issn.1673-3185.02408aluminum-alloy pipescrackcarbon fiber cloththree-point bendingbearing capacity |
| spellingShingle | Zixian YU Wei LUO Zhiyuan SHEN Jingxi LIU Three-point bending test and simulation study on pipe with crack repaired by composite material Zhongguo Jianchuan Yanjiu aluminum-alloy pipes crack carbon fiber cloth three-point bending bearing capacity |
| title | Three-point bending test and simulation study on pipe with crack repaired by composite material |
| title_full | Three-point bending test and simulation study on pipe with crack repaired by composite material |
| title_fullStr | Three-point bending test and simulation study on pipe with crack repaired by composite material |
| title_full_unstemmed | Three-point bending test and simulation study on pipe with crack repaired by composite material |
| title_short | Three-point bending test and simulation study on pipe with crack repaired by composite material |
| title_sort | three point bending test and simulation study on pipe with crack repaired by composite material |
| topic | aluminum-alloy pipes crack carbon fiber cloth three-point bending bearing capacity |
| url | http://www.ship-research.com/cn/article/doi/10.19693/j.issn.1673-3185.02408 |
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