中国物理B ›› 2019, Vol. 28 ›› Issue (11): 114302-114302.doi: 10.1088/1674-1056/ab4d41

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Simulation of acoustic fields emitted by ultrasonic phased array in austenitic steel weld

Zhong-Cun Guo(郭忠存), Shou-Guo Yan(阎守国), Bi-Xing Zhang(张碧星)   

  1. 1 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2019-09-01 修回日期:2019-09-17 出版日期:2019-11-05 发布日期:2019-11-05
  • 通讯作者: Shou-Guo Yan E-mail:yanshouguo@mail.ioa.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11474308, 11574343, and 11774377).

Simulation of acoustic fields emitted by ultrasonic phased array in austenitic steel weld

Zhong-Cun Guo(郭忠存)1,2, Shou-Guo Yan(阎守国)1, Bi-Xing Zhang(张碧星)1,2   

  1. 1 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2019-09-01 Revised:2019-09-17 Online:2019-11-05 Published:2019-11-05
  • Contact: Shou-Guo Yan E-mail:yanshouguo@mail.ioa.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11474308, 11574343, and 11774377).

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摘要： Ultrasonic inspection of austenitic steel weld is a great challenge due to skewed and distorted beam in such a highly anisotropic and inhomogeneous material. To improve the ultrasonic measurement in this situation, it is essential to have an in-depth understanding of ultrasound characteristics in austenitic steel weld. To meet such a need, in the present study we propose a method which combines the weld model, Dijkstra's path-finding algorithm and Gaussian beam equivalent point source model to calculate the acoustic fields from ultrasonic phased array in such a weld. With this method, the acoustic field in a steel-austenitic weld-steel three-layered structure for a linear phase array transducer is calculated and the propagation characteristics of ultrasound in weld are studied. The research results show that the method proposed here is capable of calculating the acoustic field in austenitic weld. Additionally, beam steering and focusing can be still realized in the austenitic steel weld and the beam distortion is more severe in the middle of weld than at other positions.

关键词: simulation of acoustic field, ultrasonic phased array, austenitic steel weld

Abstract: Ultrasonic inspection of austenitic steel weld is a great challenge due to skewed and distorted beam in such a highly anisotropic and inhomogeneous material. To improve the ultrasonic measurement in this situation, it is essential to have an in-depth understanding of ultrasound characteristics in austenitic steel weld. To meet such a need, in the present study we propose a method which combines the weld model, Dijkstra's path-finding algorithm and Gaussian beam equivalent point source model to calculate the acoustic fields from ultrasonic phased array in such a weld. With this method, the acoustic field in a steel-austenitic weld-steel three-layered structure for a linear phase array transducer is calculated and the propagation characteristics of ultrasound in weld are studied. The research results show that the method proposed here is capable of calculating the acoustic field in austenitic weld. Additionally, beam steering and focusing can be still realized in the austenitic steel weld and the beam distortion is more severe in the middle of weld than at other positions.

Key words: simulation of acoustic field, ultrasonic phased array, austenitic steel weld

中图分类号:  (General linear acoustics)

  • 43.20.+g
43.35.+d (Ultrasonics, quantum acoustics, and physical effects of sound) 43.38.+n (Transduction; acoustical devices for the generation and reproduction of sound)