Bending Natural Frequency Analysis on the FML Plates Made up of Different Nano Fillers Using Experimental and Numerical Means

Fiber Metal Laminates (FML) are cutting-edge materials that combine the strength of fibers with the versatility of metals. This study prepared FML plates with different compositions, including glass fiber, epoxy resin, multi-walled carbon nano tubes (MWCNT), Layered double hydroxide (LDH), and nano clay. These materials are increasingly used in the aircraft industry for their high performance. Our research, which includes free vibration analysis, is crucial for the design process of such structures, offering practical insights for engineers and researchers in the field.

The bending natural frequencies for the free-free, cantilevered, and clamp-clamped boundary conditions of the FML plates were ascertained using experimental and numerical analysis. The experimental and numerical analysis vibration analysis of FML plates was carried out using the Fast Fourier Transform (FFT) analyzer and Finite Element Analysis software, i.e., ANSYS, respectively.

In this study, the bending natural frequencies for the free-free, cantilevered, and clamp-clamped boundary conditions were investigated experimentally and numerically. Firstly, numerical results were obtained using Finite Element Analysis software, and then these results were compared with the experimental results. The bending natural frequencies predicted by means of the experimental and numerical analysis were observed to be in good agreement.

It was identified that the natural frequency of the FML composite plates increased with the inclusion of nanofillers, according to the results of both the experimental and numerical investigations. It was discovered that the clamped-clamped boundary condition specimens have a greater natural frequency than the cantilevered boundary condition specimens for similar setups. It was also discovered that the free-free boundary condition specimens behaved as rigid bodies up to the first six modes.