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Vibro-acoustic characteristics of multifunctional carbon fiber reinforced panel

Defence Technology（防务技术） 2023年第6期24卷 129-139页

作者： Liberata Guadagno Marialuigia Raimondo Luigi Vertuccio giuseppina barra Maurizio Arena Massimo Viscardi Department of Industrial Engineering University of SalernoVia Giovanni Paolo II13284084FiscianoSAItaly Department of Engineering University of Campania“Luigi Vanvitelli”Via Roma 29I-81031AversaItaly Department of Industrial Engineering Aerospace SectionUniversity of Naples“Federico Ⅱ”Via Claudio 2180125NaplesItaly

This paper deals with the assessment of vibro-acoustic properties of a multifunctional carbon fiber reinfo rced panel manu factured by bulk infu sion,a modified resin film infusion *** components of the epoxy resin were chosen to contrast the electrical insulating property and poor flame resistance of the epoxy resins impregnating carbon woven *** confer electrical conductivity to the resin a percentage of 0.5 wt%of Multi-Wall Carbon Nanotubes(MWCNTs)was dispersed in the resin,whereas to increase flame resistance a percentage of 5 wt%of Glycidil Polyhedral Oligomeric Silsesquioxanes(GPOSS)was solubilized in the epoxy ***,as hardener agents,a mixture of 4,4’-DiaminoDiphenyl Sulfone(DDS)(53.4 wt%)and Bis(3-Aminophenyl)Methyl Phosphine Oxide(BAMPO)(46.7 wt%)was *** values of the electrical conductivity were found satisfactory enough,being4.02×10^(-2)S/m for the multifunctional resin and 1.39×10^(4)S/m for the in-plane conductivity of the panel,whereas the Limiting Oxygen Index(LOI)value of the multifunctional resin was found to increase from 27%to 36%.Considering these promising results,an experimental assessment of the vibro-acoustic properties of the manufactured multifunctional panel was also *** panel was tested mainly to evaluate its low-frequency vibration damping and sound insulation *** manufactured panel demonstrated an improved efficiency if compared to a baseline configuration,presenting almost the double modal damping and a gain of 10 dB on the global noise reduction.

关键词： Composite materials Electrical properties Damping Tunneling atomic force microscopy(TUNA) Vibro-acoustic properties

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