High Frequency Transducer Development for Ultrasonic Tests on Ceramic Components
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
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Abstract
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.