Event Title

A Perturbation Method to Model Interdigital Transducers for Use in Smart Structures

Location

Snowbird, UT, USA

Start Date

1-1-1999 12:00 AM

Description

There is a need in many industries for a Structural Health Monitoring System based on a smart structure approach. We are mainly concerned in this paper with the study of permanently attached interdigital transducers (IDT) that have been developed at Imperial college [1,2] on the basis of conceptually similar devices used for the generation and reception of ultrasonic SAW in piezoelectric substrates in the electronics industry [3–5]. The specific application to the generation and reception of Lamb waves in non- piezoelectric substrates by means of IDT needs some further theoretical development in order to predict signal parameters such as the amplitude generated by the transducer for a given voltage input, the attenuation as the wave travels, and mode conversion at defects.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

18A

Chapter

Chapter 4: UT Transducers and Fields, Sensors

Section

UT Transducers and Arrays

Pages

1037-1044

DOI

10.1007/978-1-4615-4791-4_133

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

A Perturbation Method to Model Interdigital Transducers for Use in Smart Structures

Snowbird, UT, USA

There is a need in many industries for a Structural Health Monitoring System based on a smart structure approach. We are mainly concerned in this paper with the study of permanently attached interdigital transducers (IDT) that have been developed at Imperial college [1,2] on the basis of conceptually similar devices used for the generation and reception of ultrasonic SAW in piezoelectric substrates in the electronics industry [3–5]. The specific application to the generation and reception of Lamb waves in non- piezoelectric substrates by means of IDT needs some further theoretical development in order to predict signal parameters such as the amplitude generated by the transducer for a given voltage input, the attenuation as the wave travels, and mode conversion at defects.