Low Velocity Impact Strength of Cryogenic Treated Glass-Carbon Fiber Reinforced Composite Panels

FRP composites are considered potential materials for electric vehicle body parts. Researchers are constantly working to improve the properties of these materials using a variety of methods. In this work, laminates are treated at cryogenic temperature to enhance their properties. A multi-layer composite material reinforced with glass fiber and carbon fiber in different orientations was prepared. Tensile properties such as ultimate tensile strength, tensile Modulus, and Poisson’s Ratio of flat laminates were determined by static tension tests based on the ASTM D3039 standard. The low-velocity impact test was performed using a drop-weight impact test to determine the peak load, energy absorbed, and deformation values. The Young’s modulus and Poison’s ratio value of the treated and untreated glass-epoxy laminate material were studied and compared. The damaged area of the specimen was calculated by taking an x-ray image of the test specimen. From the above tests, we understand that treated laminate composite material has better performance than untreated laminate.