UNSPECIFIED (1996) Radiated fields of an air-coupled ultrasonic capacitance transducer. In: Ultrasonics International 1995 (UI 95), JUL 05-07, 1995, EDINBURGH, SCOTLAND.

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Abstract

The use and development of ultrasonic air-coupled transducers that can operate above 100 kHz have been of recent interest. Applications of these devices include location and imaging of objects for production engineering and non destructive evaluation of materials. In previously published work, investigation into the held characteristics of ultrasonic transducers has produced a mathematical theory that models the pressure field variations for a plane piston transducer. With modification to the mathematical theory a model of the pressure field variations for a range of transducer geometries and driving signals has been developed. The pressure held of a capacitance air-coupled transducer was measured by scanning a miniature detector through the field. Thus, it was possible to compare the experimentally obtained pressure held with the theoretical pressure held. This has enabled us to design air-coupled ultrasonic transducers with optimum characteristics for air-coupled non-contact imaging of materials.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) R Medicine
Journal or Publication Title:	ULTRASONICS
Publisher:	BUTTERWORTH-HEINEMANN LTD
ISSN:	0041-624X
Date:	June 1996
Volume:	34
Number:	2-5
Number of Pages:	4
Page Range:	pp. 169-172
Publication Status:	Published
Title of Event:	Ultrasonics International 1995 (UI 95)
Location of Event:	EDINBURGH, SCOTLAND
Date(s) of Event:	JUL 05-07, 1995
URI:	http://wrap.warwick.ac.uk/id/eprint/18536

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