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Article
An ultrasonic array sensor for spacecraft leak direction finding
Ultrasonics
  • Stephen D. Holland, Iowa State University
  • Ronald A. Roberts, Iowa State University
  • Dale E. Chimenti, Iowa State University
  • Junho Song, Iowa State University
Document Type
Article
Disciplines
Publication Date
12-1-2006
DOI
10.1016/j.ultras.2006.07.020
Abstract
We have developed an ultrasonic array sensor useable for locating air leaks in manned spacecraft and have found that this sensor locates leaks in a 1-m2 plate to within 2 cm. The sensor consists of a 63-element multiplexed array plus a reference element, all constructed from a single PZT disc and a printed circuit board. Cross-correlations of signals from the array elements with signals from the single reference element provide a measurement of the leak noise passing through the spacecraft skin under the array. A spatial Fourier transform reveals the dominant direction of propagation. Triangulation from multiple sensor locations can be used to find the source of the leak.
Comments

This is a post-print of an article from Ultrasonics, 45, no. 1–4 (December 2006): 121–126, doi: 10.1016/j.ultras.2006.07.020.

Copyright Owner
Elsevier B.V.
Language
en
File Format
application/pdf
Citation Information
Stephen D. Holland, Ronald A. Roberts, Dale E. Chimenti and Junho Song. "An ultrasonic array sensor for spacecraft leak direction finding" Ultrasonics Vol. 45 Iss. 1–4 (2006) p. 121 - 126
Available at: http://works.bepress.com/stephen_holland/32/