Modulating Lamb waves with a tunable ultrasonic lens

被引：0
作者：
Yin, Xiaowei [1 ]
Shen, Yanfeng [1 ,2 ]
Qin, Xianggui [3 ]
机构：
[1] Shanghai Jiao Tong Univ, Univ Michigan Shanghai Jiao Tong Univ Joint Inst, Shanghai 200240, Peoples R China
[2] Shanghai Key Lab Digital Maintenance Bldg & Infra, Shanghai 200240, Peoples R China
[3] China Aviat Ind Chengdu Aircraft Ind Grp Co, Chengdu 610091, Peoples R China
来源：
HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS XV | 2021年 / 11593卷
基金：
中国国家自然科学基金;
关键词：
tunable surface structure; shape memory alloy; wave manipulation; wave front control; guided waves; ultrasonics; MEMORY; PROPAGATION;
D O I：
10.1117/12.2582495
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
This paper presents a tunable ultrasonic lens for the flexible control and modulation of Lamb waves. The lens is comprised of layered slice structures using Shape Memory Alloy (SMA) which could change its material properties under thermal loads. Numerical investigations on the wave dispersion characteristics demonstrate the tuning capability of wave speeds in the slice waveguide. Harmonic and transient dynamic modeling results further present the wave steering and focusing phenomena to a desired direction and focal point, covering a scanning area. Such a capability possesses great application potential to enhance the performance of Lamb wave based SHM and NDE systems.
引用
收藏
页数：10
相关论文
共 14 条
  • [11] Wavefront modulation and controlling for Lamb waves using surface bonded slice lenses
    Tian, Zhenhua
    Yu, Lingyu
    [J]. JOURNAL OF APPLIED PHYSICS, 2017, 122 (23)
  • [12] Focusing Ultrasonic Wave using Metamaterial-based Device with Cross Shape
    Vu, Anh Hoang
    Hwang, Young-In
    Kim, Hak-Joon
    Song, Sung-Jin
    [J]. JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2019, 74 (03) : 274 - 279
  • [13] Focusing guided waves using surface bonded elastic metamaterials
    Yan, Xiang
    Zhu, Rui
    Huang, Guoliang
    Yuan, Fuh-Gwo
    [J]. APPLIED PHYSICS LETTERS, 2013, 103 (12)
  • [14] Negative refraction of elastic waves at the deep-subwavelength scale in a single-phase metamaterial
    Zhu, R.
    Liu, X. N.
    Hu, G. K.
    Sun, C. T.
    Huang, G. L.
    [J]. NATURE COMMUNICATIONS, 2014, 5
12