中国物理B ›› 2020, Vol. 29 ›› Issue (3): 34304-034304.doi: 10.1088/1674-1056/ab69ed

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

Ultrasonic beam focusing characteristics of shear-vertical waves for contact-type linear phased array in solid

Yu-Xiang Dai(戴宇翔), Shou-Guo Yan(阎守国), Bi-Xing Zhang(张碧星)   

  1. 1 Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2019-12-14 修回日期:2020-01-09 出版日期:2020-03-05 发布日期:2020-03-05
  • 通讯作者: Shou-Guo Yan E-mail:daiyuxiang@mail.ioa.ac.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11774377 and 11574343).

Ultrasonic beam focusing characteristics of shear-vertical waves for contact-type linear phased array in solid

Yu-Xiang Dai(戴宇翔)1,2, Shou-Guo Yan(阎守国)1, Bi-Xing Zhang(张碧星)1,2   

  1. 1 Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China;
    2 University of Chinese Academy of Sciences, Beijing 100190, China
  • Received:2019-12-14 Revised:2020-01-09 Online:2020-03-05 Published:2020-03-05
  • Contact: Shou-Guo Yan E-mail:daiyuxiang@mail.ioa.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11774377 and 11574343).

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摘要： We investigate the beam focusing technology of shear-vertical (SV) waves for a contact-type linear phased array to overcome the shortcomings of conventional wedge transducer arrays. The numerical simulation reveals the transient excitation and propagation characteristics of SV waves. It is found that the element size plays an important role in determining the transient radiation directivity of SV waves. The transient beam focusing characteristics of SV waves for various array parameters are deeply studied. It is particularly interesting to see that smaller element width will provide the focused beam of SV waves with higher quality, while larger element width may result in erratic fluctuation of focusing energy around the focal point. There exists a specific range of inter-element spacing for optimum focusing performance. Moreover, good beam focusing performance of SV waves can be achieved only at high steering angles.

关键词: beam focusing, shear-vertical (SV) waves, contact-type linear phased array, solid

Abstract: We investigate the beam focusing technology of shear-vertical (SV) waves for a contact-type linear phased array to overcome the shortcomings of conventional wedge transducer arrays. The numerical simulation reveals the transient excitation and propagation characteristics of SV waves. It is found that the element size plays an important role in determining the transient radiation directivity of SV waves. The transient beam focusing characteristics of SV waves for various array parameters are deeply studied. It is particularly interesting to see that smaller element width will provide the focused beam of SV waves with higher quality, while larger element width may result in erratic fluctuation of focusing energy around the focal point. There exists a specific range of inter-element spacing for optimum focusing performance. Moreover, good beam focusing performance of SV waves can be achieved only at high steering angles.

Key words: beam focusing, shear-vertical (SV) waves, contact-type linear phased array, solid

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)