Location

Williamsburg, VA

Start Date

1-1-1986 12:00 AM

Description

The detection of critical flaws in ceramics requires the use of high frequency ultrasonics. Whilst shorter wavelengths are necessary to detect low micrometer range flaws, so the higher the frequency, the higher the attenuation and so ultimate power and sensitivity is required from examining transducers. This paper outlines the development of such devices. Satisfactory transducers in the frequency range 30–100 MHz are not available commercially and the characteristics of a number of piezoelectric materials for the purpose of their development are being established. Properties such as composition, electrodes, backing and lenses are being investigated.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

5A

Chapter

Chapter 3: Sensors and Signal Processing

Section

Sensors

Pages

605-613

DOI

10.1007/978-1-4615-7763-8_62

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

High Frequency Transducer Development for Ultrasonic Tests on Ceramic Components

Williamsburg, VA

The detection of critical flaws in ceramics requires the use of high frequency ultrasonics. Whilst shorter wavelengths are necessary to detect low micrometer range flaws, so the higher the frequency, the higher the attenuation and so ultimate power and sensitivity is required from examining transducers. This paper outlines the development of such devices. Satisfactory transducers in the frequency range 30–100 MHz are not available commercially and the characteristics of a number of piezoelectric materials for the purpose of their development are being established. Properties such as composition, electrodes, backing and lenses are being investigated.