Nomex蜂窝夹芯板冲击损伤试验研究

针对某型飞机上应用的Nomex蜂窝夹芯板,通过冲击损伤试验,研究了蜂窝夹芯板厚度对其抗冲击损伤能力的影响、试件损伤面积与冲击能量之间的关系以及穿透损伤对夹芯板轴压承载性能的影响。结果表明:20 mm与8 mm厚度板在分别承受40 J与25 J冲击能量时出现穿透损伤,厚板比薄板具有更高的抗冲击损伤能力;相同冲击能量时,20 mm厚板损伤面积比8 mm板的小;随冲击能量的增大,两种板的损伤面积逐渐增大;当冲击能量超过一定值时,8 mm板损伤面积增速明显加快;20 mm蜂窝夹芯板冲击后的剩余强度为完好件的56.7%,8 mm蜂窝夹芯板冲击后的剩余强度为完好件的67.5%。

Study on the Nomex Honeycomb Impact Damage Experiment

In allusion to Nomex Honeycomb Sandwich applied in a certain plane, through impact damage experiment, the effect of Honeycomb Sandwich thickness on its anti-impact damage and the relationship between damage area and impact energy and the effect of penetrating damage on axial compression bearing capacity are studied. The results show that 20mm and 8mm sandwiches appear penetrating damage under 40J and 25J impact energy respectively and the damage area of 20mm sandwich is smaller at the same impact damage. When impact energy exceeds a certain value, damage area of 8mm sandwich grows faster. The residual intensity of 20mm and 8mm sandwiches after impact is 56.7% and 67.5% of non-impact respectively.