ScholarLens Back to search
1981•Unpublished venueRequires access

SAW Transducers for NDE Applications Using Interdigital Bulk Wave Transducers

Masao Takeuchi, A. Hiwasa, H. Shimizu

Open publisher page 1 citations

Abstract

A new SAW transducer for NDE applications utilizing bulk-to-surface mode conversion is proposed and studied in theory and experiment. In this transducer an interdigital electrode on a piezoelectric block is used to generate and detect the angle beam of bulk waves. In order to reduce too large perturbation of the piezoelectric block against the SAW guide, a solid coupling layer is bonded to the block. Mode conversion characteristics of the transducer are theoretically analyzed taking account of the leaky wave phenomena. It is demonstrated experimentally that radial (diverging and converging) SAW and steerable SAW transducers can be easily realized using the interdigital transducer with curved fingers. An application of the transducer to SAW velocity measurements is also described.

About this research paper

What this paper is about

A new SAW transducer for NDE applications utilizing bulk-to-surface mode conversion is proposed and studied in theory and experiment. In this transducer an interdigital electrode on a piezoelectric block is used to generate and detect the angle beam of bulk waves. In order to reduce too large perturbation of the piezoelectric block against the SAW guide, a solid coupling layer is bonded to the block. Mode conversion characteristics of the transducer are theoretically analyzed taking account of the leaky wave phenomena. It is demonstrated experimentally that radial (diverging and converging) SAW and steerable SAW transducers can be easily realized using the interdigital transducer with curved fingers. An application of the transducer to SAW velocity measurements is also described.

Why it matters

OpenAlex reports 1 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

A new SAW transducer for NDE applications utilizing bulk-to-surface mode conversion is proposed and studied in theory and experiment. In this transducer an interdigital electrode on a piezoelectric block is used to generate and detect the angle beam of bulk waves. In order to reduce too large perturbation of the piezoelectric block against the SAW guide, a solid coupling layer is bonded to the block. Mode conversion characteristics of the transducer are theoretically analyzed taking account of the leaky wave phenomena. It is demonstrated experimentally that radial (diverging and converging) SAW and steerable SAW transducers can be easily realized using the interdigital transducer with curved fingers. An application of the transducer to SAW velocity measurements is also described.

Key concepts: Transducer, Interdigital transducer, Acoustics, Piezoelectricity, Materials science, Surface acoustic wave, Physics

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
SAW Transducers for NDE Applications Using Interdigital Bulk Wave Transducers — Research Paper | ScholarLens