On November 30, 2018, the phased array ultrasonic testing technology seminar sponsored by Henan HATA Testing Technology Co., Ltd. and the School of Mechanical Engineering and Automation of Beijing University of Aeronautics and Astronautics was successfully held in the new main building of Beijing University of Aeronautics and Astronautics. The meeting was awarded the Henan Boiler and Pressure Vessel Safety Inspection Research Institute, China Ship Jianghua Heavy Industry Co., Ltd., Qingdao Xinlitong Industrial Co., Ltd., Shanghai Weilai Automobile Co., Ltd., Beijing Aerospace Special Equipment Inspection and Development Co., Ltd., Yanshan University National Defense. Institute of Scientific Research, Guilin Southern Testing Co., Ltd., Sichuan Jiacheng Oil and Gas Pipeline Quality Testing Co., Ltd., Aerospace Eighth Institute, China Aerospace Science and Technology Sixth Research Institute 210, Kaifeng Air Separation Group Co., Ltd., CIMC Enric Gas Machinery Co., Ltd. and other non-destructive testing institutes, large-scale testing companies, high-end manufacturing and industrial enterprises and business community friends, a total of more than 60 non-destructive testing technology leaders, senior engineers, manufacturers representatives attended the seminar.
At the beginning of the conference, Mr. Yuan Shilei, the general manager of the organizer Henan HATA Testing Technology Co., Ltd. delivered a speech. He said that he is very happy to meet with everyone in Beihang and participate in the phased array ultrasonic testing technology seminar. I hope that through the seminar, we can solve some technical problems in engineering practice.
Subsequently, the Vice Chairman of the Non-destructive Testing Branch of the Chinese Society of Mechanical Engineering and Professor Zhou Zhenggan of the Beijing University of Aeronautics and Astronautics introduced the principles of ultrasonic testing technology and array ultrasonic testing technology from the shallower to the deeper, and Beihang's advanced ultrasonic testing technology. Part of the results.
Figure 1 Beihang uses a circular array ultrasonic transducer to detect titanium alloy additive manufacturing samples. The sample is a cube with a side length of 60 mm. The adjacent three faces are drilled with 5 mm deep and Ø0.8 mm flat bottom holes. .
Figure 2 Cylindrical diffusion weld array ultrasonic testing software interface, including A-type display, C-type display and 3D display.
The array ultrasonic testing technology has more complicated detection principle than the conventional single-channel ultrasonic testing technology. It is necessary to design the transducer, wedge and sound beam excitation receiving scheme in combination with the detection object and detection requirements. How to synthesize the detection scheme based on acoustic theory The analysis of the action mechanism of the sound beam and the internal defects of the test piece is the key to improving the detection accuracy. The Beijing University of Aeronautics and Astronautics Non-destructive Testing Laboratory has independently developed a detection system including detection of sound beam path, sound field and defect response simulation. The simulation accuracy is high, the speed is fast, and the results are intuitive. The self-developed set supports phase control and full focus. The array ultrasonic inspection system verifies the correctness of the system through the application of various aerospace structural components.
During the discussion session, the participants discussed the difficulties encountered in their respective work and had a heated discussion with Professor Zhou Zhenggan and his team members. Through further discussion of exchanges, delegates have a deeper understanding of array ultrasonic testing technology, and hope to use and use array ultrasonic testing technology in future work.
With the rapid development of modern science and industrial technology, high efficiency, convenience and intelligence are important development directions of non-destructive testing technology. Henan HATA Detection Technology Co., Ltd. will further strengthen cooperation with Beijing University of Aeronautics and Astronautics to promote array ultrasonic testing technology, improve defect detection capability and efficiency of complex structural parts, solve practical problems in non-destructive testing, and provide more accurate and intelligent customers. s solution.