Enhancing the performance of piezoelectric ultrasound transducers by the use of multiple matching layers

A. Mulholland, S.N. Ramadas, R.L. O'Leary, A.C.S. Parr, G. Hayward, Alexandre Troge, R.A. Pethrick

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A linear system model is developed for a composite piezoelectric transducer with multiple matching layers. The large number of degrees of freedom in this model and the sensitivity of the device performance to these parameters make the inverse problem, of choosing these parameters to optimize the device's performance, an extremely difficult task. However, by accepting a small number of assumptions on the nature of the propagating waves in the device a Chebyshev polynomial approach is used to reduce the degrees of freedom and arrive at an algorithm for a device design. A typical device is investigated using this approach and it is shown that a threefold improvement in the device performance can be achieved over the standard single-matching-layer design. The modelling also indicated that great care has to be taken in bonding the matching layers together to ensure the homogeneity of the bonds. A transducer with four matching layers was subsequently manufactured and the experimental results show a significant improvement in the device performance, in agreement with the model predictions.
LanguageEnglish
Pages936-949
Number of pages14
JournalIMA Journal of Applied Mathematics
Volume73
Issue number6
DOIs
Publication statusPublished - Dec 2008

Fingerprint

Ultrasound
Transducer
Transducers
Ultrasonics
Piezoelectric transducers
Inverse problems
Linear systems
Polynomials
Degree of freedom
Composite materials
Chebyshev Polynomials
Threefolds
Homogeneity
Prediction Model
Inverse Problem
Linear Systems
Composite
Optimise
Experimental Results
Modeling

Keywords

  • impedance
  • systems
  • design
  • ultrasonic transducers
  • multiple matching layers
  • Chebyshev

Cite this

Mulholland, A. ; Ramadas, S.N. ; O'Leary, R.L. ; Parr, A.C.S. ; Hayward, G. ; Troge, Alexandre ; Pethrick, R.A. / Enhancing the performance of piezoelectric ultrasound transducers by the use of multiple matching layers. In: IMA Journal of Applied Mathematics. 2008 ; Vol. 73, No. 6. pp. 936-949.
@article{1e19c194a4bf4ee4ad536472cb224294,
title = "Enhancing the performance of piezoelectric ultrasound transducers by the use of multiple matching layers",
abstract = "A linear system model is developed for a composite piezoelectric transducer with multiple matching layers. The large number of degrees of freedom in this model and the sensitivity of the device performance to these parameters make the inverse problem, of choosing these parameters to optimize the device's performance, an extremely difficult task. However, by accepting a small number of assumptions on the nature of the propagating waves in the device a Chebyshev polynomial approach is used to reduce the degrees of freedom and arrive at an algorithm for a device design. A typical device is investigated using this approach and it is shown that a threefold improvement in the device performance can be achieved over the standard single-matching-layer design. The modelling also indicated that great care has to be taken in bonding the matching layers together to ensure the homogeneity of the bonds. A transducer with four matching layers was subsequently manufactured and the experimental results show a significant improvement in the device performance, in agreement with the model predictions.",
keywords = "impedance, systems, design, ultrasonic transducers, multiple matching layers, Chebyshev",
author = "A. Mulholland and S.N. Ramadas and R.L. O'Leary and A.C.S. Parr and G. Hayward and Alexandre Troge and R.A. Pethrick",
year = "2008",
month = "12",
doi = "10.1093/imamat/hxn030",
language = "English",
volume = "73",
pages = "936--949",
journal = "IMA Journal of Applied Mathematics",
issn = "0272-4960",
number = "6",

}

Enhancing the performance of piezoelectric ultrasound transducers by the use of multiple matching layers. / Mulholland, A.; Ramadas, S.N.; O'Leary, R.L.; Parr, A.C.S.; Hayward, G.; Troge, Alexandre; Pethrick, R.A.

In: IMA Journal of Applied Mathematics, Vol. 73, No. 6, 12.2008, p. 936-949.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Enhancing the performance of piezoelectric ultrasound transducers by the use of multiple matching layers

AU - Mulholland, A.

AU - Ramadas, S.N.

AU - O'Leary, R.L.

AU - Parr, A.C.S.

AU - Hayward, G.

AU - Troge, Alexandre

AU - Pethrick, R.A.

PY - 2008/12

Y1 - 2008/12

N2 - A linear system model is developed for a composite piezoelectric transducer with multiple matching layers. The large number of degrees of freedom in this model and the sensitivity of the device performance to these parameters make the inverse problem, of choosing these parameters to optimize the device's performance, an extremely difficult task. However, by accepting a small number of assumptions on the nature of the propagating waves in the device a Chebyshev polynomial approach is used to reduce the degrees of freedom and arrive at an algorithm for a device design. A typical device is investigated using this approach and it is shown that a threefold improvement in the device performance can be achieved over the standard single-matching-layer design. The modelling also indicated that great care has to be taken in bonding the matching layers together to ensure the homogeneity of the bonds. A transducer with four matching layers was subsequently manufactured and the experimental results show a significant improvement in the device performance, in agreement with the model predictions.

AB - A linear system model is developed for a composite piezoelectric transducer with multiple matching layers. The large number of degrees of freedom in this model and the sensitivity of the device performance to these parameters make the inverse problem, of choosing these parameters to optimize the device's performance, an extremely difficult task. However, by accepting a small number of assumptions on the nature of the propagating waves in the device a Chebyshev polynomial approach is used to reduce the degrees of freedom and arrive at an algorithm for a device design. A typical device is investigated using this approach and it is shown that a threefold improvement in the device performance can be achieved over the standard single-matching-layer design. The modelling also indicated that great care has to be taken in bonding the matching layers together to ensure the homogeneity of the bonds. A transducer with four matching layers was subsequently manufactured and the experimental results show a significant improvement in the device performance, in agreement with the model predictions.

KW - impedance

KW - systems

KW - design

KW - ultrasonic transducers

KW - multiple matching layers

KW - Chebyshev

U2 - 10.1093/imamat/hxn030

DO - 10.1093/imamat/hxn030

M3 - Article

VL - 73

SP - 936

EP - 949

JO - IMA Journal of Applied Mathematics

T2 - IMA Journal of Applied Mathematics

JF - IMA Journal of Applied Mathematics

SN - 0272-4960

IS - 6

ER -