Experimental Investigation of Impacted Composite Plates

This paper presents an experiment and simulation of the impact strength of fibre-reinforced polymer composite, comparing glass and rayon fibre. The results showed more response with fibre type than with fibre orientation. Rayon-fibre composite showed more brittleness than glass-fibre composite. The impact velocity was set at 8m/s to obtain a thorough break of the material by the impactor. The DIN-ISO-6603-2 and the ASTM-D3763-10E-1 standards were compared. Critical mechanical properties in impact such as total energy (J), puncture energy (J), puncture deflection (mm), energy to maximum force (J), deflection at maximum force (mm) and total energy up to 5% of highest force and peak energy were evaluated. The plots were obtained and compared. Experimental material properties were used to define the model in simulation. The force-displacement and energy-displacement curves were plotted.  

Keywords: composite, velocity, puncture, impact, energy, displacement


Engineering material plays a crucial role in the design of modern structures. Most systems have materials subjected to various application loads, including tensile, bending, torsional, shear and impact loads. During impact, composite materials absorb a lot of force. Impact and flexural behaviour in a coupled manner have been used to investigate fibre-composite behaviour [1, 2]. For low-velocity impact, the whole structure deforms during impact as the energy of the impact is involved in high-frequency energy attenuation [3].

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