L型构件R区的超声相控阵检测方法

doi:10.7527/S1000-6893.2013.0048

Abstract

Abstract:

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.

Key words: L-shaped component, ultrasonic phased array, nondestructive testing, linear array transducer, finite difference

CLC Number:

V262
TB553

XU Na, ZHOU Zhenggan, LIU Weiping, ZHOU Hui, YU Guang. Ultrasonic Phased Array Inspection Method for the Corner of L-shaped Components[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013, 34(2): 419-425.

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Ultrasonic Phased Array Inspection Method for the Corner of L-shaped Components

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