Issue 50

E. D. Pasiou, Frattura ed Integrità Strutturale, 50 (2019) 560-572; DOI: 10.3221/IGF-ESIS.50.47 571 emphasized that all three of them are in excellent accordance to each other, despite the fact that the results obtained are of qualitative nature. This observation renders their use a “treasure” in the hands of researchers. However, research in the laboratories should be somehow projected in real life. These techniques could be welcome for monitoring problematic members of a monument which will be always indicated by the scientists involved in the project, e.g., archeologists, architects, civil engineers etc. Taking into account the fact that a large number of structural members of most monuments are more or less cracked, these techniques could, for example, be used for monitoring existing cracks susceptible to propagate in order to alert the scientists about upcoming fractures in order to undertake the proper actions. R EFERENCES [1] Livadefs, C. J. (1956). 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