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Imaging using air-coupled polymer-membrane capacitive ultrasonic arrays
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UNSPECIFIED (2004) Imaging using air-coupled polymer-membrane capacitive ultrasonic arrays. In: Ultrasonics International 2003 Meetng, Granada, SPAIN, JUN 30-JUL 03, 2003. Published in: ULTRASONICS, 42 (1-9). pp. 859-864. doi:10.1016/j.ultras.2004.01.065 ISSN 0041-624X.
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Official URL: http://dx.doi.org/10.1016/j.ultras.2004.01.065
Abstract
Polymer-membrane capacitive ultrasonic linear and 2-D arrays have been fabricated for use in air-coupled imaging. By using arrays as receivers, there is a possibility of much faster imaging as the need for physically moving the receiver to scan a sample can be replaced by electronic multiplexing. In order to utilise this, a through-thickness air-coupled image of a composite plate has been made using a 2-D array as a receiver and a comparatively large planar Source in air. This was made possible by the use of a chirp drive signal and cross-correlation on the measured waveform. Larger 2-D arrays with an increased number of elements have been simulated using a small scanned single receiver, and excellent imaging potential demonstrated. In addition two array receivers have been used in conjunction with two methods of post-processing, SAFT and ellipse crossing, to locate objects accurately. (C) 2004 Elsevier B.V. All rights reserved.
Item Type: | Conference Item (UNSPECIFIED) | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) R Medicine |
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Journal or Publication Title: | ULTRASONICS | ||||
Publisher: | ELSEVIER SCIENCE BV | ||||
ISSN: | 0041-624X | ||||
Official Date: | April 2004 | ||||
Dates: |
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Volume: | 42 | ||||
Number: | 1-9 | ||||
Number of Pages: | 6 | ||||
Page Range: | pp. 859-864 | ||||
DOI: | 10.1016/j.ultras.2004.01.065 | ||||
Publication Status: | Published | ||||
Title of Event: | Ultrasonics International 2003 Meetng | ||||
Location of Event: | Granada, SPAIN | ||||
Date(s) of Event: | JUN 30-JUL 03, 2003 |
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