Design, fabrication of line-focus lens-less polyvinylidene fluoride transducers and applications on measuring surface acoustic waves with V(f, z) analytical method

Cunfu He, Yan Lü, Guorong Song, Bin Wu, Yung-Chun Lee

研究成果: Article

6 引文 (Scopus)

摘要

Line-focus-beam ultrasonic material property characterization system enables accurate measurements on the phase velocities of leaky surface acoustic waves (LSAW) or rayleigh-type leaky surface acoustic waves. But in view of the lens of the conventional acoustic microscopy is expensive and difficult to produce, new method of design and fabrication of two line-focus lens-less polyvinylidene fluoride (PVDF) transducers is presented for acoustic microscopy system utilizing a 40 μm thick piezoelectric PVDF film to construct the active element. The transducers introduced here centre around 5 MHz and 11 MHz respectively. Different from high cost of equipments and measuring the oscillation period Δz on an operation of tone-burst mode, an improved V(f, z) method based on tow-dimensional Fourier transform is developed for the broadband measurements. A defocusing system for measuring surface acoustic waves is established and a non-contact immersion experiment of a polished fused quartz is carried out. The LSAW velocity extracted by V(f, z) analytical technique is compared with the theoretical one and they both are in good agreement.

原文English
頁(從 - 到)1-7
頁數7
期刊Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
47
發行號24
DOIs
出版狀態Published - 2011 十二月 20

指紋

Surface Acoustic Wave
Transducer
Analytical Methods
Surface waves
Lens
Transducers
Lenses
Fabrication
Acoustic waves
Line
Microscopy
Acoustics
Phase Velocity
Phase velocity
Non-contact
Acoustic wave velocity
Immersion
Burst
Rayleigh
Material Properties

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Computer Science Applications
  • Applied Mathematics

引用此文

@article{eb02110202a2406c8b9c24b64b73ecd8,
title = "Design, fabrication of line-focus lens-less polyvinylidene fluoride transducers and applications on measuring surface acoustic waves with V(f, z) analytical method",
abstract = "Line-focus-beam ultrasonic material property characterization system enables accurate measurements on the phase velocities of leaky surface acoustic waves (LSAW) or rayleigh-type leaky surface acoustic waves. But in view of the lens of the conventional acoustic microscopy is expensive and difficult to produce, new method of design and fabrication of two line-focus lens-less polyvinylidene fluoride (PVDF) transducers is presented for acoustic microscopy system utilizing a 40 μm thick piezoelectric PVDF film to construct the active element. The transducers introduced here centre around 5 MHz and 11 MHz respectively. Different from high cost of equipments and measuring the oscillation period Δz on an operation of tone-burst mode, an improved V(f, z) method based on tow-dimensional Fourier transform is developed for the broadband measurements. A defocusing system for measuring surface acoustic waves is established and a non-contact immersion experiment of a polished fused quartz is carried out. The LSAW velocity extracted by V(f, z) analytical technique is compared with the theoretical one and they both are in good agreement.",
author = "Cunfu He and Yan L{\"u} and Guorong Song and Bin Wu and Yung-Chun Lee",
year = "2011",
month = "12",
day = "20",
doi = "10.3901/JME.2011.24.001",
language = "English",
volume = "47",
pages = "1--7",
journal = "Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering",
issn = "0577-6686",
publisher = "Editorial Office of Chinese Journal of Mechanical Engineering",
number = "24",

}

TY - JOUR

T1 - Design, fabrication of line-focus lens-less polyvinylidene fluoride transducers and applications on measuring surface acoustic waves with V(f, z) analytical method

AU - He, Cunfu

AU - Lü, Yan

AU - Song, Guorong

AU - Wu, Bin

AU - Lee, Yung-Chun

PY - 2011/12/20

Y1 - 2011/12/20

N2 - Line-focus-beam ultrasonic material property characterization system enables accurate measurements on the phase velocities of leaky surface acoustic waves (LSAW) or rayleigh-type leaky surface acoustic waves. But in view of the lens of the conventional acoustic microscopy is expensive and difficult to produce, new method of design and fabrication of two line-focus lens-less polyvinylidene fluoride (PVDF) transducers is presented for acoustic microscopy system utilizing a 40 μm thick piezoelectric PVDF film to construct the active element. The transducers introduced here centre around 5 MHz and 11 MHz respectively. Different from high cost of equipments and measuring the oscillation period Δz on an operation of tone-burst mode, an improved V(f, z) method based on tow-dimensional Fourier transform is developed for the broadband measurements. A defocusing system for measuring surface acoustic waves is established and a non-contact immersion experiment of a polished fused quartz is carried out. The LSAW velocity extracted by V(f, z) analytical technique is compared with the theoretical one and they both are in good agreement.

AB - Line-focus-beam ultrasonic material property characterization system enables accurate measurements on the phase velocities of leaky surface acoustic waves (LSAW) or rayleigh-type leaky surface acoustic waves. But in view of the lens of the conventional acoustic microscopy is expensive and difficult to produce, new method of design and fabrication of two line-focus lens-less polyvinylidene fluoride (PVDF) transducers is presented for acoustic microscopy system utilizing a 40 μm thick piezoelectric PVDF film to construct the active element. The transducers introduced here centre around 5 MHz and 11 MHz respectively. Different from high cost of equipments and measuring the oscillation period Δz on an operation of tone-burst mode, an improved V(f, z) method based on tow-dimensional Fourier transform is developed for the broadband measurements. A defocusing system for measuring surface acoustic waves is established and a non-contact immersion experiment of a polished fused quartz is carried out. The LSAW velocity extracted by V(f, z) analytical technique is compared with the theoretical one and they both are in good agreement.

UR - http://www.scopus.com/inward/record.url?scp=84862927626&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84862927626&partnerID=8YFLogxK

U2 - 10.3901/JME.2011.24.001

DO - 10.3901/JME.2011.24.001

M3 - Article

AN - SCOPUS:84862927626

VL - 47

SP - 1

EP - 7

JO - Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering

JF - Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering

SN - 0577-6686

IS - 24

ER -