The generation and detection of logitudinal guided waves in thin fibres using a conical transformer

D.C. Atkinson, G. Hayward

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper describes a technique to couple ultrasonic energy from a piezoceramic disc transducer into a fiber waveguide to induce longitudinal propagation. A polymer cone is utilized to bond the fiber waveguide onto the surface of the disc and to behave as a mechanical transformer, converting lateral displacements at its base into longitudinal displacements at its apex. Wideband finite element analysis (FEA) results are provided to show that the bond efficiently couples the radial modes of a disc transducer into fiber waveguides for longitudinal mode excitation. Furthermore, narrowband FEA is utilized to investigate how the geometry and material properties of the bond and waveguide influence the coupling efficiency. The technique is then quantified in terms of signal-to-coherent noise ratio (SCNR), reflecting its ability to generate the desired longitudinal waveguide mode and reject erroneous modes. Finally, design parameters are outlined for the successful implementation of this technique.
LanguageEnglish
Pages1046-1053
Number of pages7
JournalIEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Volume48
Issue number4
DOIs
Publication statusPublished - Jul 2001

Fingerprint

Guided electromagnetic wave propagation
transformers
Waveguides
waveguides
fibers
Fibers
Transducers
transducers
Finite element method
narrowband
Cones
Materials properties
cones
apexes
ultrasonics
Ultrasonics
broadband
propagation
Geometry
polymers

Keywords

  • acoustic waveguides
  • finite element analysis
  • piezoelectric transducers
  • ultrasonic transducers

Cite this

@article{2a15a4d919d2421ab0cabcd7236cfa2b,
title = "The generation and detection of logitudinal guided waves in thin fibres using a conical transformer",
abstract = "This paper describes a technique to couple ultrasonic energy from a piezoceramic disc transducer into a fiber waveguide to induce longitudinal propagation. A polymer cone is utilized to bond the fiber waveguide onto the surface of the disc and to behave as a mechanical transformer, converting lateral displacements at its base into longitudinal displacements at its apex. Wideband finite element analysis (FEA) results are provided to show that the bond efficiently couples the radial modes of a disc transducer into fiber waveguides for longitudinal mode excitation. Furthermore, narrowband FEA is utilized to investigate how the geometry and material properties of the bond and waveguide influence the coupling efficiency. The technique is then quantified in terms of signal-to-coherent noise ratio (SCNR), reflecting its ability to generate the desired longitudinal waveguide mode and reject erroneous modes. Finally, design parameters are outlined for the successful implementation of this technique.",
keywords = "acoustic waveguides, finite element analysis, piezoelectric transducers, ultrasonic transducers",
author = "D.C. Atkinson and G. Hayward",
year = "2001",
month = "7",
doi = "10.1109/58.935721",
language = "English",
volume = "48",
pages = "1046--1053",
journal = "IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control",
issn = "0885-3010",
number = "4",

}

The generation and detection of logitudinal guided waves in thin fibres using a conical transformer. / Atkinson, D.C.; Hayward, G.

In: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Vol. 48, No. 4, 07.2001, p. 1046-1053.

Research output: Contribution to journalArticle

TY - JOUR

T1 - The generation and detection of logitudinal guided waves in thin fibres using a conical transformer

AU - Atkinson, D.C.

AU - Hayward, G.

PY - 2001/7

Y1 - 2001/7

N2 - This paper describes a technique to couple ultrasonic energy from a piezoceramic disc transducer into a fiber waveguide to induce longitudinal propagation. A polymer cone is utilized to bond the fiber waveguide onto the surface of the disc and to behave as a mechanical transformer, converting lateral displacements at its base into longitudinal displacements at its apex. Wideband finite element analysis (FEA) results are provided to show that the bond efficiently couples the radial modes of a disc transducer into fiber waveguides for longitudinal mode excitation. Furthermore, narrowband FEA is utilized to investigate how the geometry and material properties of the bond and waveguide influence the coupling efficiency. The technique is then quantified in terms of signal-to-coherent noise ratio (SCNR), reflecting its ability to generate the desired longitudinal waveguide mode and reject erroneous modes. Finally, design parameters are outlined for the successful implementation of this technique.

AB - This paper describes a technique to couple ultrasonic energy from a piezoceramic disc transducer into a fiber waveguide to induce longitudinal propagation. A polymer cone is utilized to bond the fiber waveguide onto the surface of the disc and to behave as a mechanical transformer, converting lateral displacements at its base into longitudinal displacements at its apex. Wideband finite element analysis (FEA) results are provided to show that the bond efficiently couples the radial modes of a disc transducer into fiber waveguides for longitudinal mode excitation. Furthermore, narrowband FEA is utilized to investigate how the geometry and material properties of the bond and waveguide influence the coupling efficiency. The technique is then quantified in terms of signal-to-coherent noise ratio (SCNR), reflecting its ability to generate the desired longitudinal waveguide mode and reject erroneous modes. Finally, design parameters are outlined for the successful implementation of this technique.

KW - acoustic waveguides

KW - finite element analysis

KW - piezoelectric transducers

KW - ultrasonic transducers

UR - http://dx.doi.org/10.1109/58.935721

U2 - 10.1109/58.935721

DO - 10.1109/58.935721

M3 - Article

VL - 48

SP - 1046

EP - 1053

JO - IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control

T2 - IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control

JF - IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control

SN - 0885-3010

IS - 4

ER -