Application of Laser-Induced Graphene Flexible Sensor in Monitoring Large Deformation of Reinforced Concrete Structure
When cracks appear in reinforced concrete (RC) structures, the tensile load will be borne by steel bars with high ductility, resulting in a large deformation. Traditional strain sensors have difficulties in achieving good performance for large deformations in concrete structures. In this paper, base...
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MDPI AG
2024-11-01
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| Online Access: | https://www.mdpi.com/1424-8220/24/23/7444 |
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| author | Lina Liu Chenning Cai Zhenghua Qian Peng Li Feng Zhu |
| author_facet | Lina Liu Chenning Cai Zhenghua Qian Peng Li Feng Zhu |
| author_sort | Lina Liu |
| collection | DOAJ |
| description | When cracks appear in reinforced concrete (RC) structures, the tensile load will be borne by steel bars with high ductility, resulting in a large deformation. Traditional strain sensors have difficulties in achieving good performance for large deformations in concrete structures. In this paper, based on a laser-induced graphene (LIG) technique, a flexible sensor is proposed for monitoring large deformations of concrete structures. Polyimide film is used as the carbon precursor to prepare LIG through laser scanning and then LIG is transferred onto a polydimethylsiloxane (PDMS) substrate to form the flexible sensor. The calibration and performance verification of the flexible sensor are completed through tensile tests. The applicability of the flexible sensor in monitoring large deformations of concrete is verified through beam bending experiments. The fatigue resistance of the flexible sensor is verified through fatigue tests on a full-scale beam. The experimental results showed that the flexible sensor has the advantages of low cost, simple preparation, and stable performance, making it suitable for applications in the field of large deformation monitoring of RC structures. |
| format | Article |
| id | doaj-art-5f0eab3c32d9487c9384ed36f4a7dd0d |
| institution | OA Journals |
| issn | 1424-8220 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-5f0eab3c32d9487c9384ed36f4a7dd0d2025-08-20T02:38:48ZengMDPI AGSensors1424-82202024-11-012423744410.3390/s24237444Application of Laser-Induced Graphene Flexible Sensor in Monitoring Large Deformation of Reinforced Concrete StructureLina Liu0Chenning Cai1Zhenghua Qian2Peng Li3Feng Zhu4College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of General Aviation and Flight, Nanjing University of Aeronautics and Astronautics, Liyang 213300, ChinaWhen cracks appear in reinforced concrete (RC) structures, the tensile load will be borne by steel bars with high ductility, resulting in a large deformation. Traditional strain sensors have difficulties in achieving good performance for large deformations in concrete structures. In this paper, based on a laser-induced graphene (LIG) technique, a flexible sensor is proposed for monitoring large deformations of concrete structures. Polyimide film is used as the carbon precursor to prepare LIG through laser scanning and then LIG is transferred onto a polydimethylsiloxane (PDMS) substrate to form the flexible sensor. The calibration and performance verification of the flexible sensor are completed through tensile tests. The applicability of the flexible sensor in monitoring large deformations of concrete is verified through beam bending experiments. The fatigue resistance of the flexible sensor is verified through fatigue tests on a full-scale beam. The experimental results showed that the flexible sensor has the advantages of low cost, simple preparation, and stable performance, making it suitable for applications in the field of large deformation monitoring of RC structures.https://www.mdpi.com/1424-8220/24/23/7444laser-induced grapheneflexible sensortransfer processlarge deformation monitoringreinforced concrete structure |
| spellingShingle | Lina Liu Chenning Cai Zhenghua Qian Peng Li Feng Zhu Application of Laser-Induced Graphene Flexible Sensor in Monitoring Large Deformation of Reinforced Concrete Structure Sensors laser-induced graphene flexible sensor transfer process large deformation monitoring reinforced concrete structure |
| title | Application of Laser-Induced Graphene Flexible Sensor in Monitoring Large Deformation of Reinforced Concrete Structure |
| title_full | Application of Laser-Induced Graphene Flexible Sensor in Monitoring Large Deformation of Reinforced Concrete Structure |
| title_fullStr | Application of Laser-Induced Graphene Flexible Sensor in Monitoring Large Deformation of Reinforced Concrete Structure |
| title_full_unstemmed | Application of Laser-Induced Graphene Flexible Sensor in Monitoring Large Deformation of Reinforced Concrete Structure |
| title_short | Application of Laser-Induced Graphene Flexible Sensor in Monitoring Large Deformation of Reinforced Concrete Structure |
| title_sort | application of laser induced graphene flexible sensor in monitoring large deformation of reinforced concrete structure |
| topic | laser-induced graphene flexible sensor transfer process large deformation monitoring reinforced concrete structure |
| url | https://www.mdpi.com/1424-8220/24/23/7444 |
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