Nomex蜂窝复合材料冲击损伤及剩余压缩强度试验

Impact Damage and Post-Impact Compressive Strength Experiment of Nomex Honeycomb Sandwich Panel

针对Nomex蜂窝复合材料冲击损伤问题,研究蜂窝材料在冲击作用下的损伤行为。对试件进行预制冲击损伤试验和冲击形貌分析。测试剩余压缩强度,根据试件应变值变化情况得出试件的屈曲载荷和破坏载荷,并与未进行冲击试件对比分析。结果表明:冲击损伤后,Nomex蜂窝复合材料试件压缩屈曲载荷保持率为80.0%左右,破坏载荷的保持率为67.7%左右,破坏最大应变的保持率为62.9%。

Focused on the impact damage problem of nomex honeycomb sandwich panel,the damaged behavior of the honeycomb sandwich panel was studied after impact.Impact damage was prefabricated on the specimen and the form of specimen after impact was analyzed.The residual compressive strength test was carried out and the change of strain values was observed.Consequently,the flexural load and the breaking load were obtained and compared to that of before impact damage.The results show that the rate of remained flexural load is about 80.0％ and the rate of remained breaking load is about 67.7％.Furthermore the rate of the max break strain is 62.9％ after impact damage.