Vibration Analysis of Graphene Reinforced Hybrid Jute/Basalt Natural Nanocomposite Beam

Systematic experimental assessment of graphene—enhanced natural fiber hybrid composites for vibration performance is a relatively unexplored domain. The aim is to experimentally investigate the influence of graphene nanoplatelet inclusion, boundary condition and impact position on vibrational behavior of hybrid jute basalt natural fiber reinforced composite beam. Natural frequency, damping factor and mode shapes are evaluated. Seven samples of composite beams were prepared- pure basalt, pure jute, hybrid jute/ basalt and hybrid jute /basalt with graphene nanoplatelets of varying composition 0.2wt. %, 0.4wt.%, 0.6wt.% and 1wt.%. Natural frequency test was performed on all beams experimentally using fast fourier transform (FFT) analyzer at two boundary conditions: clamped- clamped and clamped free condition using moving rover method. Basalt fibre composite showed highest natural frequency and least damping factor and jute fibre composite showed least natural frequency and highest damping factor. Concentration of graphene significantly influenced natural frequency and damping factor. Hybrid jute/basalt composite beam with 0.6wt% graphene showed highest natural frequency and composite with 0.4wt% graphene showed highest damping factor. The hybrid jute-basalt fiber composite exhibited a balanced performance, demonstrating intermediate values of both natural frequency and damping factor—positioning it effectively between its individual constituents in terms of dynamic behavior. The incorporation of graphene significantly influenced the natural frequency and damping properties of hybrid natural composites.