Imaging using air-coupled polymer-membrane capacitive ultrasonic arrays
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.Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.ultras.2004.01.065
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)|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)
|Journal or Publication Title:||ULTRASONICS|
|Publisher:||ELSEVIER SCIENCE BV|
|Official Date:||April 2004|
|Number of Pages:||6|
|Page Range:||pp. 859-864|
|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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