Quantitative evaluations by infrared thermography in optically semi-transparent paper-based artefacts
| Autor: | G. Caruso, N. Orazi, Ugo Zammit, Stefano Paoloni, F. Mercuri, C. Cicero |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Optically semi-transparent materials
Infrared Computer science Acoustics Quantitative Evaluations 02 engineering and technology Semi transparent 01 natural sciences Signal 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Instrumentation Hidden graphic elements Applied Mathematics 020208 electrical & electronic engineering 010401 analytical chemistry Settore FIS/07 Paper based Condensed Matter Physics Finite element method 0104 chemical sciences Characterization (materials science) Cultural heritage artefacts Infrared thermography Thermography |
| Popis: | In this paper, infrared thermography is applied to the quantitative characterization of optically semi-transparent media by using a newly introduced mathematical model. The method is specifically aimed to the detection and evaluations in graphic features buried beneath the surface of some particular kind of cultural heritage artefacts, such as books and documents. A numerical approach based on the finite element method, is proposed for solving the model equations. The computed thermographic signal depends on different inspected material physical properties, which have been selectively evaluated by comparing the theoretical results with the experimental ones in specifically designed test samples. Thereafter, the model is applied to the analysis of the results obtained in the case of graphic elements buried within samples constituted by the same previously characterized materials. |
| Databáze: | OpenAIRE |
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