Design, fabrication, and characterization of single-element interdigital transducers for NDT applications
| Autor: | Jeong K. Na, Samuel J. Kuhr, James L. Blackshire |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Frequency response
Materials science business.industry Interdigital transducer Acoustics Metals and Alloys Condensed Matter Physics Laser Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention symbols.namesake Optics Surface wave law Nondestructive testing symbols Ultrasonic sensor Electrical and Electronic Engineering Rayleigh wave business Instrumentation Beam divergence |
| Zdroj: | Sensors and Actuators A: Physical. 148:359-365 |
| ISSN: | 0924-4247 |
| Popis: | Single-element interdigital transducers (IDTs) are designed, fabricated, and characterized as a complimentary sensor approach for traditional ultrasonic transducers used in nondestructive testing (NDT). The frequency of interest is in the lower megahertz range, 2–10 MHz. In this paper, a simple five-finger paired IDT is described, where laser micro-machining techniques were used to shape the electrode patterns for an IDT resonance frequency of ∼3 MHz. Detailed characterization of the Rayleigh surface waves generated by the IDT is performed using a scanning laser interferometry system. Wave properties such as beam profile, beam divergence, energy decay, frequency response, and phase dependence are reported. |
| Databáze: | OpenAIRE |
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