The effect of nickel‐titanium alloy particles on the vibration response and the mechanical properties of carbon fiber laminates

This study discussed the effects of different contents of Nickel‐titanium alloy particles (NiTip) on the vibration properties of carbon fiber reinforced polymers (CFRP) and further verified the test results by dynamic mechanical analysis tests while analyzing the effects of NiTip on the thermal stability of CFRP. The test results showed that 1.0 vol% of NiTip was the most effective in reducing the vibration transmission rate of the CFRP while improving its thermal stability. The modal of the CFRP composite cantilever beam is analyzed using the finite element method. In addition, the mechanical properties of CFRP with different NiTip contents were tested, including tensile, flexural, interlaminar shear and impact properties. The test results showed that 1.0 vol% of NiTip was most effective in improving the flexural properties, tensile properties and interlayer shear properties of CFRP. At the same time, 3.0 vol% of NiTip was most effective in improving the impact properties of CFRP. In addition, the fracture surfaces of CFRP reinforced with different NiTip contents were microanalysed to elucidate the enhancement mechanism. This study developed a multifunctional composite material with both vibration damping and high performance. These results provide essential guidelines for the optimal design and application of NiTip reinforced composites in vibration control, structural and aerospace applications.Highlights The effects of different Nickel‐titanium alloy particles (NiTip) levels on the vibration and mechanical properties of carbon fiber reinforced polymers (CFRP) were investigated. The influence of NiTip addition on the loss factor and thermal stability of CFRP was evaluated. SEM images were used to analyze the influence mechanism of uniform dispersion of NiTip on the reduction of vibration transmission rate of CFRP and the improvement of mechanical properties of CFRP.