L型构件R区的超声相控阵检测方法
收稿日期: 2012-05-08
修回日期: 2012-07-19
网络出版日期: 2012-08-11
基金资助
国家商用飞机制造工程技术研究中心创新基金
Ultrasonic Phased Array Inspection Method for the Corner of L-shaped Components
Received date: 2012-05-08
Revised date: 2012-07-19
Online published: 2012-08-11
Supported by
Fund of National Engineering and Research Center for Commercial Aircraft Manufacturing
徐娜 , 周正干 , 刘卫平 , 周晖 , 于光 . L型构件R区的超声相控阵检测方法[J]. 航空学报, 2013 , 34(2) : 419 -425 . DOI: 10.7527/S1000-6893.2013.0048
Since the conventional ultrasonic testing approach is not competent for the corner inspection of L-shaped components, an ultrasonic phased array inspection method is studied for this purpose, which has the advantage that the beam can be controlled flexibly. Taking this into consideration, an inspection method of L-shaped components with linear array transducers was proposed. The delay time for the inspection of multilayer media was calculated according to Fermat’s principle. A finite difference numerical simulation and a testing experiment were conducted to verify the scheme of phased array inspection and the method of delay time calculation. Finally, a composite L-shaped specimen was detected and the experimental results were similar to the actual information of the specimen. The results show that it is feasible and effective for the ultrasonic phased array technique to detect the corner of L-shaped components with linear array transducers.
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