Study on interface bonding properties of CFRP-steel bonding at different temperatures

doi:10.19936/j.cnki.2096-8000.20250328.006

Abstract

Abstract: In this paper, the mechanical properties of steel and carbon fiber composite bonded by RN136N/HN136N two-component adhesive at 10~90 ℃ were studied. Firstly, the mechanical behavior of the interface was simulated based on the cohesive force model. Secondly, the tensile shear test of carbon fiber composite and steel single bond sample was carried out at different temperatures. The failure mode and ultimate bearing capacity of the interface were studied. The results show that the failure mode of the sample has a great correlation with the temperature. The ultimate bearing capacity of the sample is the highest at 30 ℃, and the ultimate bearing capacity and interface bond stiffness increase first and then decrease with the increase of temperature. The simulated ultimate bearing capacity is in good agreement with the experimental results. It is also found that the overall stress distribution of the joint is more uniform under low stress conditions. At higher stress levels, the middle of the joint will bear larger tensile stress and the two sides will bear larger shear stress.

Key words: carbon fiber reinforced plastic, bonded interface, cohesive unit, failure mode, ultimate bearing capacity

CLC Number:

TB332

LIU Wei, YANG Ji, YUAN Chunhui, XIA Xu, ZHANG Jinguang. Study on interface bonding properties of CFRP-steel bonding at different temperatures[J]. COMPOSITES SCIENCE AND ENGINEERING, 2025, 0(3): 39-45.

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