Journal
NDT & E INTERNATIONAL
Volume 40, Issue 3, Pages 208-214Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ndteint.2006.10.007
Keywords
radar; remote sensing; interferometry; dynamic monitoring; structural test
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A novel microwave sensor capable of remote detection of structural displacements is experimented as geotechnical instrument for static and dynamic testing of bridges. The sensor is based on an interferometric radar providing range imaging capability and submillimetric accuracy range displacement measurement. Dynamic monitoring calls for sampling rate high enough for transient analysis, while static monitoring requires long-term stability. The instrument has been designed in order to provide both these features. The results of a validation campaign on a railway bridge during the final test before going into service are reported. (C) 2006 Elsevier Ltd. All rights reserved.
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