Emanuele Piuzzi, Erika Pittella, Stefano Pisa, Andrea Cataldo, Egidio De Benedetto, Giuseppe Cannazza
In this work, a noninvasive microwave-based system for monitoring water content in stone materials used in Cultural Heritage structures is presented. By placing a planar resonator in contact with the considered stone sample, through reflection scattering parameter measurements, it is possible to associate the resonant frequency of the resonator to the moisture content of the stone sample. In this way, an experimental relationship between resonant frequency and moisture content can be obtained. Experimental tests are carried out on two types of materials, namely gentile and carparo stones:...
TC4 MetroArchaeo 2017
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Fabio Leccese, Marco Cagnetti, Simonetta Tuti, Pietro Gabriele, Eduardo De Francesco, Rada Durović-Pejčev, Alessandro Pecora
A modified version of LEACH routing protocol has been implemented and simulated in Castalia simulator to verify if it was good to manage a WSN dedicated for necropolis. Simulation results seem to show the valence of our idea.
TC4 MetroArchaeo 2017
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Paolo D'Atanasio, Alessandro Zambotti, Stefano Pisa, Erika Pittella, Emanuele Piuzzi
In this paper, preliminary results of complex permittivity measurements of clay-brick material will be presented. The general aim of the experimental project is to correlate the measured permittivity of construction materials with the content of water and salt, in order to obtain information on the condition of ancient walls by using non-invasive techniques. The complex permittivity values reported in this paper have been obtained by waveguide measurements on samples of clay-brick dried and then immersed in demineralized water or in a saturated solution of demineralized water and NaCl.
TC4 MetroArchaeo 2017
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Fabio Mangini, Lorenzo Dinia, Fabrizio Frezza, Andrea Beccarini, Mauro Del Muto, Enrico Federici, Stefano Godi, Andrea Segneri
In this paper, a new methodology for measuring the cracking for the Structural Health Monitoring (SHM) of cultural heritage, is presented. This methodology is characterized by being minimally invasive on the artifact to preserve, which is one of the main qualities required in this field. The approach used is to determine the relative distance between two optical tags, using advanced fitting algorithms for the objective function. In this work, we have taken into account different objective-function kinds, in order to find the best configuration to determine the fitting parameters, useful to...
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Michele Caponero, Rosaria D'Amato, Andrea Polimadei, Gaetano Terranova
Novel relative humidity (RH) sensors, based on fibre Bragg gratings (FBGs) technology, have been fabricated using different moisture-sensitive materials, namely agar, poly(vinylalcohol) and poly(ethyleneoxide), on the fiber sensor. The sensor is specifically intended to monitor stones of cultural heritage buildings and monuments, in particular for being positionedunder hydrophobic coatings used for protecting stones from absorption of water and dissolved chemicals, thus providing early warning of coating deterioration by RH monitoring. The feature of the prototypes was first tested exposing...
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Ivan Roselli, Angelo Tatì, Vincenzo Fioriti, Irene Bellagamba, Marialuisa Mongelli, Mariarosaria Barbera, Marina Magnani Cinetti, Roberto Romano, Gerardo De Canio
The structural diagnosis of historic buildings should integrate on-site and in-thelaboratory experimental testing techniques, with no harmful effects on the structural and aesthetic health of the monument. In the present paper several nondestructive tests (NDTs) were conducted to study an archeological ruined building located in Rome, the socalled Temple of Minerva Medica. In particular, the experimental program comprised 3D geometric surveys by laser scanning and stereophotogrammetry, thermal imaging, microclimatic parameters acquisition, sonic testing and ambient vibration monitoring. The...
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Barone Fabrizio, Giordano Gerardo
The dynamic structural analysis of historical monuments for health evaluation and long term preservation requires a long term acquisition of linear and angular displacements, mainly in the low frequency region (
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Maria Danese, Maria Sileo, Nicola Masini
The monitoring of the state of conservation of frescoes is still nowadays a crucial problem in the field of cultural heritage protection. With this aim, in the last years non-invasive diagnostics techniques have been introduced. However, even if they are widely considered an essential tool for knowledge, diagnostics for conservation is still struggling to establish itself in the operational practice. This is due to several reasons, including the still high costs, the difficulty of processing and interpretation of the acquired data, the lack of recognized operating protocols. In particular,...
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S. Fontul, M. Solla, H. Cruz, J. S. Machado, L. Pajewski
This paper describes a study conducted by LNEC to assess the health and safety conditions of the floor of the Noble Hall of the National Theater of São Carlos. In a multidisciplinary approach, an extensive field work was carried out, involving the identification of type and location of floor beams in the various areas of the floor using a Ground Penetrating Radar (GPR), local inspection openings to visually assess the geometry, timber species and conservation state of structural members at those points and assessment of the conservation state of timber beam ends, using drilling equipment....
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A. E. Bonomo, G. Prosser, G. Rizzo, M. Sileo
In Matera, the 2019 Culture Capital and UNESCO site, the Pleistocene Gravina Calcarenite is the main natural stone used to build. This gives a unique aspect to the ancient part of the town called Sassi. It's an awesome example of a rock-cut settlement where architecture is fit to the geological features. Unfortunately, constructions are currently in a deteriorated state and it is possible to see on the 'calcareous tuffs' several degradation morphologies. This work analyses the connection between geological features and alteration patterns in order to obtain useful informations to preserve...
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