纳米碳纤维复合材料断裂电发射试验研究  

Experimental study of the electrical emission associated with fracture of carbon nanofibers composite

作　　者：梅启林[1] 王福玲[1] 王继辉[1] 黄志雄[1] 

机构地区：[1]武汉理工大学材料科学与工程学院,湖北武汉430070

出　　处：《功能材料》2007年第A09期3660-3662,共3页Journal of Functional Materials

基　　金：湖北省自然科学基金资助项目（2005ABA010）

摘　　要：采用超声波分散的方法制备了纳米碳纤维／环氧树脂复合材料，研究了纳米碳纤维／环氧树脂复合材料在拉伸和弯曲破坏时的电发射现象，并对其电发射机理进行了探讨。研究结果表明：纳米碳纤维／环氧树脂复合材料在受荷开裂和裂纹扩展过程中均存在明显的电发射现象，这一特性将为复合材料结构的在线监测及非损伤诊断提供新的方法和途径。By the means of ultrasonic dispersion, carbon nanofibers reinforced epoxy resin composite was prepared in the lab, the electrical emissions of carbon nanofibers composite under tensile stress and bending stress were studied, also the mechanism of electrical emissions was discussed. The experiment exhibited apparent electrical emissions when the cracks generated and propagated. It will provide a new method and solution for the on line monitor and healthy diagnosis of composite structure without any damage.

关 键 词：纳米碳纤维 断裂 电发射 

分 类 号：TB332[一般工业技术—材料科学与工程]