复合材料夹芯结构的数字化敲击检测技术研究

摘要

In this article, with the demand of composite sandwich NDT, the tap force time criterion theory of digital tap test was introduced. The portable tap test imaging system was designed. To different type and damage dimension sand-wich structure, the tap test validate experiment was studied, and the NDT experiment results were discussed and analyzed. The experiment proves that the digital tap test technique can effectively detect the delamination and debonding defects of honeycomb and foam sandwich structures.%从复合材料夹芯结构的无损检测需求出发,简述了基于敲击力时间判据的数字化敲击检测技术原理,介绍了便携式数字化敲击检测成像系统的设计过程,针对不同结构类型和不同损伤尺寸的夹芯结构试件开展了敲击检测试验验证,并对检测结果进行了讨论和分析.试验证明数字化敲击检测技术能够有效检测蜂窝夹芯结构和泡沫夹芯结构中的分层和脱粘缺陷.