A point-focus PVDF transducer for Lamb wave measurements

Yung-Chun Lee, Yi Fan Tein, Yu Yi Chao

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This paper reports the development of a point-focused PVDF transducer with a large aperture surface and its application on measuring Lamb wave dispersion curves. The point-focused transducer is constructed by forcing a piezoelectric PVDF film into a concave spherical shape. The acoustic waves radiated from the PVDF film are then focused into a point without using any acoustic lens. Similar to its line-focused counterpart, the point-focused transducer is capable of measuring dispersion curves of lamb waves provided its aperture angle is large enough. To verify this, experimental testing is carried out on several thin metal plates and good measurement results are observed. Future improvements and applications on the transducer will be addressed.

Original languageEnglish
Pages (from-to)29-33
Number of pages5
JournalJournal of Mechanics
Volume18
Issue number1
DOIs
Publication statusPublished - 2002 Jan 1

Fingerprint

Lamb Waves
Lamb waves
Transducer
Surface waves
Transducers
transducers
Dispersion Curves
apertures
Acoustic imaging
Plate metal
metal plates
acoustics
wave dispersion
curves
Acoustic Waves
Forcing
Lens
Acoustics
Metals
lenses

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Applied Mathematics

Cite this

Lee, Yung-Chun ; Tein, Yi Fan ; Chao, Yu Yi. / A point-focus PVDF transducer for Lamb wave measurements. In: Journal of Mechanics. 2002 ; Vol. 18, No. 1. pp. 29-33.
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A point-focus PVDF transducer for Lamb wave measurements. / Lee, Yung-Chun; Tein, Yi Fan; Chao, Yu Yi.

In: Journal of Mechanics, Vol. 18, No. 1, 01.01.2002, p. 29-33.

Research output: Contribution to journalArticle

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