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Article

Study on the Interface Constitutive Relation between Carbon Fiber Fabric and Steel

1
Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Southwest University of Science and Technology, Mianyang 621010, China
2
Key Laboratory of Icing and Anti/De-icing, China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China
3
School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China
*
Author to whom correspondence should be addressed.
Materials 2020, 13(15), 3263; https://doi.org/10.3390/ma13153263
Received: 17 June 2020 / Revised: 18 July 2020 / Accepted: 20 July 2020 / Published: 23 July 2020
(This article belongs to the Special Issue Advanced Composite Materials: Theory, Design and Applications)
Peeling failure at the interface is one of the main failure modes for CFRP (Carbon Fiber-Reinforced Polymer)-reinforced steel structures. However, there are very few reported studies on the bond-slip relationship at the CFRP-steel interface. A series of simple shear tests were carried out in the present paper. The influence of the fiber fabric’s width and thickness, the surface roughness of the steel sheet, and the thickness of the adhesive layer on the bonding performance of the CFRP fabric to steel interface was considered. The interface constitutive model and bonding strength model were further established under multiple factors. The results show that with the decrease of the surface roughness, the interface’ ultimate peeling load increases gradually, and the failure has a tendency to develop from a glue-steel interface to a glue-CFRP interface. The test pieces that were subjected to sand blasting obtained the peak value of the ultimate peeling load. This indicates that sand blasting can effectively enhance the interface bonding strength. The theoretical values obtained via the interface prediction model are consistent with the experimental values. This proves that the newly developed interface prediction model can effectively predict the local bonding slip and bonding strength of the interface. View Full-Text
Keywords: carbon fiber fabric; steel; interface constitutive model; bonding strength model carbon fiber fabric; steel; interface constitutive model; bonding strength model
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MDPI and ACS Style

Shi, J.; Jia, B.; Ren, Y.; Zhang, X.; Luo, J. Study on the Interface Constitutive Relation between Carbon Fiber Fabric and Steel. Materials 2020, 13, 3263. https://doi.org/10.3390/ma13153263

AMA Style

Shi J, Jia B, Ren Y, Zhang X, Luo J. Study on the Interface Constitutive Relation between Carbon Fiber Fabric and Steel. Materials. 2020; 13(15):3263. https://doi.org/10.3390/ma13153263

Chicago/Turabian Style

Shi, Jianjun, Bin Jia, Yinyin Ren, Xiaomei Zhang, and Jian Luo. 2020. "Study on the Interface Constitutive Relation between Carbon Fiber Fabric and Steel" Materials 13, no. 15: 3263. https://doi.org/10.3390/ma13153263

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