Abstract
In recent years there has been an increasing interest in applying adhesive bonding to structural components of the vehicles manufactured by the automotive industry. When adhesive joints are used in automotive applications, additional factors such as the strength under impact loads play a decisive role. Under impact conditions, the bonded joints must provide sufficient strength to transmit the transient load without fracturing, ensuring the safety of the vehicle occupants. The main objective of this study was to evaluate the impact strength of single lap joints with carbon fibre reinforced plastic adherends, bonded using an epoxy adhesive. The joints were tested in a drop weight impact machine, in order to simulate impact conditions typical of the automotive industry. Quasi static-tests were also performed, allowing to compare the static and impact performance of the bonded joints. Numerical models, using cohesive zone elements were developed in ABAQUS® and the numerical results were validated with experimental results. Overall, the results of this study show that different overlap lengths considerably affect the impact response of the composite Single Lap Joints (SLJs). The results obtained with the use of analytical and numerical approaches were found to be in good agreement with the experimental data.
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Varajão, J.F.D., Carbas, R.J.C., Marques, E.A.S., da Silva, L.F.M. (2021). The Behaviour of CFRP Adhesive Joints Under Different Loading Rates. In: da Silva, L.F.M., Adams, R.D. (eds) 6th International Conference on Adhesive Bonding 2021. Proceedings in Engineering Mechanics. Springer, Cham. https://doi.org/10.1007/978-3-030-87668-5_9
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