Application of laser methods for identification of authenticity of documents fabricated from thermoplastic composite material

S. Greičius, A. Bubulis, R. Vasiliauskas, V. Jūrėnas

Journal of Vibroengineering, Vol. 12, Issue 3, 2010, p. 292-299.
Received 24 July 2010; accepted 10 September 2010; published 30 September 2010

Copyright © 2010 Vibroengineering This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Abstract. Processes of globalization and integration are pervasive all over the world, and rapid innovation of advanced transportation systems resulted in enormous increase in number of persons travelling cross-border. Normally, persons crossing the border are checked at the first control line. Therefore, application of innovative methods that allow identification of partial alterations in a document or a fully counterfeit document, for initial checking of documents remains a relevant issue. The holographic interferometry represents one of the non-destructive control methods applicable for document check that enables assessment of defects in the entire area of a document being checked. This paper presents validation of the real-time method of holographic interferometry used for document check as well as parameters of a holographic setup, description of document investigation and analysis of the obtained findings

Keywords: holographic interferometry, mechanical vibration, acoustic excitation source, travel documents.