Abstract
Sandwich structures made up of honeycomb composites have high-strength structural applications because of their low weight and high stiffness. High flexural stiffness is a major aspect in developing structures with several multilayer materials. Statistical tests analyze the behavior of loads to which a body can sustain without failure and dynamic behavior defines the overall failure modes and the vibration characteristics. In this study, static and dynamic responses of honeycomb sandwich structures are performed under static load conditions. The structures made up of carbon fiber reinforcement including various volume fractions of carbon nanotubes (CNT) used as face sheets and aluminum 3003 as core were prepared. Four distinct combinations were examined in this investigation, including one where the face sheet was made primarily of carbon fiber and epoxy without CNT and three others where CNT was added into the matrix with 2 w%, 5 w% and 7.5 w%, respectively. The three-point bending test was performed according to the ASTM standard C393 experimentally and the validation was performed computationally using ANSYS. Free vibration test was carried out analyzing different mode shapes and natural frequencies. In static tests, there was a high correlation between experimental and simulation results. The obtained results reveal the exceptional behavior of the proposed honeycomb structure. The proposed material combination is anticipated to show a high degree of pragmatism in aeronautical applications based on the findings.
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Chandra, S., Amulani, A., Thomas, S.B. et al. Influence of CNT volume fractions on static and dynamic behavior of aluminum honeycomb-cored carbon-fiber-reinforced honeycomb sandwich structure. J Braz. Soc. Mech. Sci. Eng. 44, 507 (2022). https://doi.org/10.1007/s40430-022-03825-z
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DOI: https://doi.org/10.1007/s40430-022-03825-z