An ultrasonic testing method for wall thickness of turbine blades | |
Zhou B(周波)1,2; Tian TT(田同同)1,2; Zhu G(朱光).1,2; Zhao JB(赵吉宾)1,2; Liu DH(刘殿海)1,2 | |
刊名 | Measurement: Journal of the International Measurement Confederation |
2022 | |
卷号 | 198页码:1-17 |
关键词 | Turbine blade Wall thickness value Ultrasonic testing Support vector machine Positionin |
ISSN号 | 0263-2241 |
产权排序 | 1 |
英文摘要 | Compared with inner solid structures, the inner hollow structures of turbine blades show excellent mechanical properties and better physical properties, e.g., excellent heat dissipation and diversion effects, and light weight. Its complex inner structures cannot be detected accurately by traditional testing methods. Among all non-destructive testing (NDT) methods, ultrasonic testing method has certain advantages in measurement accuracy and efficiency for measuring wall thickness values. The accuracy of measurement results is provided by four criteria: precision, accuracy, stability, and efficiency. However, ultrasonic testing method still faces new challenges that are barely explored, e.g., inner structures have unique characteristics of complex geometrical features, the measurement process need to meet high-precision positioning and quickly detecting requirements. In this paper, in order to improve the detection accuracy and efficiency, an industrial robot is used to substitute the existing detection methods: once a new blade is clamped by terminal mechanism, a new calibration method adopted the six-point positioning scheme was provided to solve the problem of rapid and accurate updating tool coordinate system. The support vector machine (SVM) system was used to output regression results of the adjustment parameters based on the geometric features of distorted wave shapes. Two kinds of measurement paths were used to measure the wall thickness values for accurate measurement. The experimental results show the superiority and effectiveness of our method in terms of measuring stability, accuracy and testing efficiency. |
语种 | 英语 |
WOS记录号 | WOS:000807471400005 |
资助机构 | Central Government Guides the Local Science and Technology Development Fund Plan (grant no. 2021JH6/10500123) ; National Natural Science Foundation of China (grant no. 5160547) |
内容类型 | 期刊论文 |
源URL | [http://ir.sia.cn/handle/173321/31040] |
专题 | 工艺装备与智能机器人研究室 |
通讯作者 | Zhao JB(赵吉宾) |
作者单位 | 1.Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China 2.Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China |
推荐引用方式 GB/T 7714 | Zhou B,Tian TT,Zhu G,et al. An ultrasonic testing method for wall thickness of turbine blades[J]. Measurement: Journal of the International Measurement Confederation,2022,198:1-17. |
APA | Zhou B,Tian TT,Zhu G,Zhao JB,&Liu DH.(2022).An ultrasonic testing method for wall thickness of turbine blades.Measurement: Journal of the International Measurement Confederation,198,1-17. |
MLA | Zhou B,et al."An ultrasonic testing method for wall thickness of turbine blades".Measurement: Journal of the International Measurement Confederation 198(2022):1-17. |
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