EFFECT OF PMI FOAM ON LOW-VELOCITY IMPACT RESISTANCE OF CARBON FIBER COMPOSITES

Abstract

Abstract: In this paper, the effect of PMI foam on the low-velocity impact resistance of carbon fiber composites was studied by drop weight impact test. Experiments were carried out on carbon fiber composite laminates with a thickness of 5 mm and PMI foam (3 mm thick) sandwich carbon fiber composites (2.5 mm each for upper and lower skins) with low-velocity impact energy of 5 J, 10 J, 20 J, 40 J, respectively. The experimental results show that the energy absorption effect of foam sandwich carbon fiber composites is better than that of carbon fiber composite laminates. Along with the increase of impact energy, the impact energy absorption effect between the foam sandwich composite material and the carbon fiber composite laminate is getting smaller and smaller, but the impact damage of the sandwich panel is better than that of the laminate. As the impact energy increases, the ratio of the absorbed impact energy of the carbon fiber composite laminate increases gradually and the foam sandwich carbon fiber composite decreases gradually. However, under the impact energy of 40 J and below, the absorption energy ratio of the carbon fiber composite laminate is lower than that of the foam sandwich carbon fiber composite.

Key words: composite material, foam sandwich, impact energy, drop weight impact

CLC Number:

TB332

WANG Shi-jie, SUN Ze-yu, TAO Lei, YANG Qing. EFFECT OF PMI FOAM ON LOW-VELOCITY IMPACT RESISTANCE OF CARBON FIBER COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2019, 0(8): 53-58.

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