摘要
对含低速冲击损伤的蜂窝夹芯板试样进行了拉－拉、压－压和拉－压等３种疲劳试验，以及疲劳后的静载拉伸、压缩破坏试验。用Ｘ光技术、热揭层技术和外观检测等对疲劳损伤的扩展和疲劳后静载的破坏进行了研究，分析了疲劳损伤对蜂窝夹芯板性能的影响。结果表明，低速冲击后蜂窝夹芯板单向疲劳性能良好，而双向疲劳性能可能较差。
Tension/tension , compression/compression and tension/compression fatigue tests were carried out on composite honeycomb core sandwich specimens after low velocity impact. Then they were tested to fail by tensile or compressive loads. Some methods were used to study the fatigue damage development and static failure after fatigue: X ray, deply, and visual inspection. The influences of fatigue damage on the properties of Nomex honeycomb core sandwich panels were analyzed.The results showed that the unidirectional fatigue properties of honeycomb core sandwich planes after low velocity impact were very good.The bidirectional fatigue properties of honeycomb core sandwich planes after low velocity impact might be worse.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1998年第6期740-743,共4页
Acta Aeronautica et Astronautica Sinica
基金
航空科学基金
关键词
蜂窝结构
冲击
疲劳
拉伸强度
压缩强度
honeycomb structure, impact , fatigue, tensile strength, compressive strength
