X射线实时成像技术在炭纤维预制体及其复合材料中的应用  

Application of X-ray Real-time Imaging Technology on Detection of Carbon Fiber Preform and Its Composites

作　　者：陈腾飞[1] 刘磊[2] 徐惠娟[1] 刘杰[1] 卢超[3] 

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083 [2]湖南科技大学机电工程学院,湖南湘潭411201 [3]南昌航空大学无损检测技术教育部重点实验室,江西南昌330063

出　　处：《金属材料与冶金工程》2011年第1期39-41,共3页Metal Materials and Metallurgy Engineering

基　　金：无损检测技术教育部重点实验室开放基金(ZD200729010)

摘　　要：炭纤维预制体及其复合材料在制备和使用过程中可能产生不同程度的缺陷,对其进行无损检测非常重要。本工作采用X射线实时成像技术对炭纤维预制体及炭/炭复合材料进行无损检测。结果表明:X射线实时成像技术对炭纤维预制体中可能存在的缺陷和夹杂以及炭/炭复合材料的结构均匀性进行无损检测是有效的。炭纤维预制体中存在锥状断针和局部结构疏松缺陷,采用X射线实时成像技术分析得到的密度分布与取样实测的密度分布结果相吻合,这为炭/炭复合材料制备过程中的无损检测提供了快速、可靠手段。It is necessary to carry out nondestructive testing on the possible-existed defects in carbon fiber preform and its composites.Nondestructive testing on carbon fiber preform and carbon-carbon composites was carried out by X-ray real-time imaging technology in the present work.Results showed that X-ray real-time imaging technology worked effectively on nondestructive test of possible-existed defects and impurities in and the structural homogeneity of carbon-carbon composites.Broken taper-needle and partially loose defects existed in carbon fiber preform.The obtained density distribution of the carbon-carbon composites by X-ray real-time imaging technology was indentical to that obtained by real sample from the composites.It is a rapid and reliable nondestructive testing method for carbon-carbon composites during their preparation.

关 键 词：X射线实时成像技术 炭纤维预制体 炭/炭复合材料 缺陷 

分 类 号：TG115.28[金属学及工艺—物理冶金] TB332[金属学及工艺—金属学]