FLUIDEX

Forgery of personal identity documents is an integral part of organized crime, the precondition of international smuggling drugs, weapons and other goods, illegal immigration, human trafficking, terrorism, mobility, fraud, money laundering. These sides of organized crime puts the greatest threat to internal security of the EU, while the harm to made to the economy, including distortions of the domestic market, can reach hundreds of billions of euros. Therefore, expeditious inspection of personal identity documents continues to remain a very important issue for law enforcement bodies (officers of migration, police, State Border Guard Service). This research deals with the authenticity inspection of personal identity document – passport data page – which is based on non-destructive testing – holographic interferometry methods and the analysis of thermal behaviour impact on the MPR data page surface deformation. Original and forged passports were investigated, thermal load parameters on the data page and its fixation conditions in a special holder were determined. The analysis of the obtained holographic interferograms allowed confirming the hypothesis claims that the character of surface deformation of forged MPR data page significantly differs from the character of original MPR data. Computational model of MPR data page thermal behaviour was developed. Simulation of the process of data page surface deformation with the applied thermal loading was carried out. Theoretical and experimental results confirming the application possibility of non-destructive testing methodology for determining authenticity of the passports were obtained.

In recent years, when rapid growth of the number of people crossing state borders is observed it is very important to identify the authenticity of identity documents. Therefore it is becoming very important the impact of both the human factor and the role of application of appropriate technical measures and new methods on the possibility to detect partial changes in the document or forged in whole documents at the stage of primary inspection. This research is dedicated to the identity document - passport data page authenticity tests which are based on non-destructive testing - holographic interferometry methods and the determination of passport data page thermal expansion effect on the surface deformation. Tests were performed with original and forged passports, the data page fixing conditions in a special holder, and thermal load parameters were determined. The obtained results in the form of holographic interferograms confirmed the hypothesis claims that surface deformation of the data page in counterfeit passport is clearly different from the original passport's data page. The obtained experimental results confirm the possibility to apply the selected non-destructive testing methodology for determining authenticity of the passports.

Under the effect of globalization and constantly increasing number of persons crossing state borders reliable authenticity assessment of personal identity documents is of crucial importance. As for inspection of the document only a few minutes are allocated, in the presence of signs of falsification or counterfeiting effective methods based on the application of technical devices are necessary. The research presents a method for structural integrity verification of a data sheet of multilayer structure polycarbonate - teslin by the analysis of heat exchange process in it. The change of physical parameters (thermal conductivity) at the mechanically damaged and nondamaged zones of the data sheet was experimentally researched. Mathematical model of heat exchange process through the thickness of the data sheet was built. Simulation results of the process indicate that difference of temperature on the sheet’s surface is sufficient for detection by modern devices, its duration and heating temperature are reasonable for practical implementation of the method in inspection of travel documents.

The paper presents the methodology for obtaining holograms by the methods of stroboholography and techniques for their analysis when three-dimensional vibrations of an object are conditioned by the signal of one or two harmonic frequencies or non harmonic signal. A method of strobo light pulse formation and synchronization with the selected phase of oscillations to ensure a robust and stable synchronization is presented. The methodology for analysis of the obtained holograms evaluating the duration of strobo pulses and the hologram exposure time is presented. The cases of the separation of vibration components of the object are analyzed, the results obtained with the rational and irrational ratios of the oscillation frequencies are presented.