基于CART决策树的分层数据无损检测  

Nondestructive Testing of Hierarchical Data Based on CART Decision Tree

作　　者：宋甫成 李艳军[1] 曹愈远[1] 张兴成 SONG Fu-cheng;LI Yan-jun;CAO Yu-yuan;ZHANG Xing-cheng(College of Civil Aviation,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China)

机构地区：[1]南京航空航天大学民航学院,江苏南京211106

出　　处：《航空计算技术》2020年第6期34-37,42,共5页Aeronautical Computing Technique

基　　金：国家自然科学基金项目资助(50705097);南京航空航天大学研究生开放基金项目资助(kfjj20200725)。

摘　　要：敲击检测是无损检测技术中最有效的方法之一。针对自由装填式药柱界面粘接质量中可能出现的多种类型粘接方式,使用敲击检测技术采集到粘接质量的分层数据,通过对敲击检测分层数据的研究,提出了一种结合CART决策树的航空装备无损检测方法。实验证明基于CART决策树的智能敲击检测技术能够有效检测出自由装填式药柱界面多种类型粘接方式中的脱粘缺陷,能够避免传统数字敲击检测中面对多种类型粘接缺陷需要重复设置标准值的局限。Coin tap is one of the most effective methods in non destructive testing technology.For the various types of bonding methods that may appear in the bonding quality of the interface of the free filled grain,the layering data of the bonding quality is collected using the coin tap technology.Through the research on the striking detection layered data,a non destructive testing method for aviation equipment combined with CART decision tree is proposed.The experiment proved that the intelligent coin tap technology based on the CART decision tree can effectively detect the various types of debonding defects at the interface of the freely loaded grain,and can avoid the limitation of setting standard values repeatedly that traditional digital coin tap can′t avoid when face the multiple types of bonding defects.

关 键 词：敲击检测 自由装填式药柱界面脱粘 分层数据 CART决策树 

分 类 号：TB302.5[一般工业技术—材料科学与工程] V250.2[航空宇航科学与技术—航空宇航制造工程]