Authenticity analysis of personal identity documents by the methods of holographic interferometry

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 ofthe 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.Original Abstract: Pastaraisiais metais sparciai didejant valstybes siena kertanciu asmenu skaiciui labai aktualu yra nustatyti siu asmenu tapatybes dokumentu autentiskuma. Todel labai svarbiu tampa tiek zmogiskojo faktoriaus, tiek tinkamu techniniu priemoniu ir nauju metodu, leidzianciu aptikti dalinius pakeitimus dokumente ar visiskai klastota dokumenta, taikymas pirminiam dokumentu tikrinimui vaid-muo. Sis darbas skirtas asmens tapatybes dokumento - paso duomenu lapo autentiskumo tyrimams paremtiems neardancios kontroles - holografines interferometrijos metodais ir nustatant paso duomenu lapo siluminio pletimosi itaka jo pavirsiaus deformacijai. Atlikti eksperimentiniai tyrimai su originaliais ir suklastotais pasais, nustatytos duomenu lapo itvirtinimo salygos spccialiame laikiklyje, nustatyti temperaturinio apkrovimo parametrai. Gauti tyrimu rezultatai holografiniu interferogramu pavidalu patvirtino iskeltos hipotezes teiginius, kad suklastotu pasu duomenu lapo pavirsiaus deformacijos akivaizdziai skiriasi nuo originaliu pasu duomenu lapu. Gauti eksperimentiniai rezultatai patvirtina galimybe taikyti pasirinkta neardancios kontroles tyrimo metodika pasu autentiskumui nustatyti.