发动机涡轮叶片孔探眼动行为的研究  

Research on Eye Movement Behavior of Engine Turbine Blade Borescope

作　　者：钱锋[1] 贺强[1] QIAN Feng;HE Qiang(Aviation Engineering Institute,Civil Aviation Flight University of China,Sichuan Guanghan 618307,China)

机构地区：[1]中国民用航空飞行学院航空工程学院,四川广汉618307

出　　处：《机械设计与制造》2023年第10期41-45,共5页Machinery Design & Manufacture

基　　金：四川省科技计划项目(2021YJ0537)。

摘　　要：高压涡轮叶片的孔探检测是航空发动机维修中最重要的检测项目,为了研究不同经验下的发动机涡轮叶片孔探的眼动行为,通过眼动仪获取不同孔探人员检测过程中的眼动数据,并依据高压涡轮叶片的本体结构将检测过程中人员的视野平面划分成了4块注视区域,并利用马尔可夫链理论对叶根、叶尖、叶身、前缘这4块注视区域进行求解,获取了视觉一步转移概率以及注意力平稳分布矩阵,根据计算结果发现熟练孔探人员在检测过程中会反复确认涡轮叶片的前缘和叶尖这两个特定结构区域是否存在故障,而非熟练孔探人员则没有一定的针对性更偏向视野平面的全域搜索,可见通过该研究能有效了解经验丰富的孔探人员在孔探过程中的视觉搜索模式,帮助缺乏检测经验的人员学习孔探检测技巧,提升检测效率。High pressure turbine blade borescope detection is an important detection item in aeroengine maintenance.In order to study the eye movement behavior of HPT blades borescope by different experience,the eye movement data of different borescope per-sonnel in the detection process are obtained by using the Tobii Glasses 2.Combined with the structure of HPT blade,the field of vi-sion plane of personnel in the detection process is divided into four types of fixation areas.Then,the visual transfer probabilities of four types of gaze regions are solved by Markov chain theory and the attention distribution matrix is obtained.According to the matrix,it is found that skilled borescope personnel will continue to pay attention to the specific structural area of HPT blades,while the unskilled detectives have no certain pertinence and prefer the global search of field of view plane.Using this conclusion can help us effectively understand the skilled’svisual search mode in HPT borescope,on the other hand can help those who lack of detection experience learn borescope skills and improve detection efficiency.

关 键 词：高压涡轮叶片 孔探 眼动 检测经验 马尔科夫链 平稳分布矩阵 

分 类 号：TH16[机械工程—机械制造及自动化] V219[航空宇航科学与技术—航空宇航推进理论与工程]