Akademik Veri Yönetim Sistemi
25th International Conference on Advances in Materials & Processing Technologies AMPT2024, İstanbul, Türkiye, 30 Ekim - 01 Kasım 2024, ss.1-6
Fibre-reinforced polymers (FRP) are widely used in the aerospace, automotive and other industries because of their high specific strength and corrosion resistance. In-situ condition monitoring of FRP composites is critical to maintaining their structural integrity in service condition. The electrical resistance change (ERC) method is a promising approach for in situ damage detection. In this study, the effect of fibre orientation on the ERC properties of multi-walled carbon nanotube (MWCNT)-filled unidirectional glass fibre reinforced epoxy composites was investigated in three point bending tests. 0.3 wt% MWCNTs were used to obtain the electrical conductivity within the composites, based on preliminary work. The composites were fabricated by the vacuum bagging method using unidirectional 300 gr/m2 glass fibres at angles of 15º, 30º, 45º, 60º, 75º and 90º. The electrical resistance of the samples throughout tests were carefully measured using a multimeter. The results showed that the ERC characteristic of composites were significantly influenced by the orientation of the reinforcing elements of the glass fibre composites. The lowest initial resistance were obtained when the fibres were oriented in the direction of the electric current.