• 机械基础工程 •

### 复杂型面构件超声检测中的路径校验方法

1. 1.中南大学,长沙,410075
2.重庆大学机械传动国家重点实验室,重庆,400044
3.长沙理工大学,长沙,410114
4.中国兵器科学研究院宁波分院,宁波,315103
• 出版日期:2010-08-10 发布日期:2010-09-19
• 基金资助:
重庆大学机械传动国家重点实验室开放基金资助项目(SKLMT-KFKT-200810)

### Path Checking in Curved Component Ultrasonic Inspection

Li Xiongbing1,2;Yang Yue1,2;Hu Hongwei3;Ni Peijun4;Yang Cheng1

1. 1.Central South University, Changsha, 410075
2.State Key Laboratory of Mechanical Transmission, Chongqing University,Chongqing, 400044
3.Changsha University of Science and Technology, Changsha, 410114
4.The Ningbo Branch of Ordnance Science Institute of China, Ningbo,Zhejiang, 315103
• Online:2010-08-10 Published:2010-09-19

An efficient and practical methodology was proposed to realize the path checking: a virtual cylinder was obtained when the transducer was prolonged in the direction of ultrasonic beam, then the path checking was replaced by interference detection between the virtual cylinder and the surface of component. In the interference detection, firstly the surface of component was discretized into many patches presented by bounding box. Secondly the algorithm of orthographic projections was used to detect the collision between the virtual cylinder and bounding box. After that, the patches of the component which interfere with bounding box were subdivided into many quadrangles, finally interference detection between cylinder and quadrangles was conducted so that the accurate results of path checking can be obtained. The influence on algorithm’s performance of choosing bounding boxes was discussed. The results of many experiments show the validity of this method.

Abstract:

component with curved surface; ultrasonic inspection; path checking; projection