The contact sponge method is applied on a piece of clay brick. According to the standard, the spo... more The contact sponge method is applied on a piece of clay brick. According to the standard, the sponge is moistened with water, applied on the surface of the material by means of a cup, and weighted before and after the application. It allows us to determine the amount of water absorbed by the porous material by unit area and unit time. After the application, the moistened area begins to evaporate and cool down. The IR camera is used to monitor the temperature variation of the imprint of the sponge. Meanwhile, moisture diffuses on the material as well. The IR camera is used to monitor the in-plane diffusion of moisture by following the imprint of the sponge that enlarges with time. A suitable model is used to evaluate the shape of the imprint that varies with time.
Proceedings of the 2021 International Conference on Quantitative InfraRed Thermography
In this work, we propose to monitor the diffusion of water in the porous material, both in time a... more In this work, we propose to monitor the diffusion of water in the porous material, both in time and space by collecting a sequence of IR images, after the application of the contact sponge. The first experimentation was done in situ during a restoration campaign. To improve the understanding of the phenomena, it was planned to carry on some experiments on porous materials that are homogeneous as much as possible. A fired clay brick and a sand stone pietra serena have been used to apply the contact sponge technique and to monitor the induced effects by IRT in a controlled environment
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
The conservation of built heritage is a complex process that necessitates cooperative efforts. Ho... more The conservation of built heritage is a complex process that necessitates cooperative efforts. Holistic, integrated documentation constitutes a crucial step towards conservation by contributing to diagnosis and by extension to the effective decision-making about the required preventive and restorative interventions. It involves the recording of interdisciplinary data to produce objective diagnostical conclusions concerning the state of preservation. Although the developments in close-range sensing techniques allow increasingly accurate and rich data recording for heritage building condition surveys, the problem of combining them (to allow integrated processing) often remains unsolved. This is particularly true when surveys include vastly heterogenous documentation data. This work aims to discuss methodologies and implications of such integrations through a monumental heritage survey case-the Castello del Valentino in Turin (Italy). Visible-spectrum and infrared imagery is combined with photogrammetric techniques, terrestrial LiDAR, and microwave measurements conducted on the historical façades' surfaces, to examine the comprehensiveness of the data fusion results, as well as conclusions that can be drawn regarding previous interventions and the current condition of the monument.
This paper presents the results of a project in which a correlation was made between the results ... more This paper presents the results of a project in which a correlation was made between the results of qualitative and quantitative analyses of the state of plaster on the facade of Valentino Castle in Turin, Italy. The aim of the project was to assess its condition in order to plan restoration work.
The 16th International Workshop on Advanced Infrared Technology and Applications (AITA 2021) was ... more The 16th International Workshop on Advanced Infrared Technology and Applications (AITA 2021) was held online on 26–28 October 2021.
The work originates from the necessity of looking into the conservation conditions of the Valenti... more The work originates from the necessity of looking into the conservation conditions of the Valentino Castle's plasters in a not destructive way, in view of a possible programme of restoration. The first stage of this research concerned the application of the IR qualitative analysis. Afterwards a comparison was performed, by overlap, of the thermal anomalies recorded during two surveys carried out in opposite seasonal conditions. Moreover an inspection survey was carried out on sample spots by knocking test. In the second stage, executed on two sample areas in opposite exposure conditions, the thermal transitory was analysed by quantitative method in a case in heating, in the other one in cooling. From this research we infer the possibility of qualitative analysis use on wide surfaces to single out the possible defective zones, and the importance of the quantitative analysis use on samples to mark the different defects and to examine the influence of surface colours on thermal beh...
It is well known that IRT is among the preferred instruments in the qualitative monitoring of hum... more It is well known that IRT is among the preferred instruments in the qualitative monitoring of humidity in buildings. The evaporation of water leads to a sink of thermal energy that eventually manifests as a decreasing of the temperature. The imaging and non-contact characteristics of IRT make the monitoring of this temperature decrease particularly easy and effective. Nonetheless, the quantitative extraction of some figures that make the qualitative observation more reliable is still an open problem.
The subflorescence and efflorescence phenomena are widely acknowledged as the major causes of per... more The subflorescence and efflorescence phenomena are widely acknowledged as the major causes of permanent damage to fresco wall paintings. They are related to the occurrence of cycles of dry/wet conditions inside the walls. Therefore it is essential to identify the presence of water on the decorated surfaces and inside the walls. Additionally it is important to evaluate the source and the effects of dynamic environmental conditions on the water over time. In the artistic heritage conservation field, non-invasive imaging techniques such as infrared thermography are now largely used, mainly to pair with other quantitative local analysis. NDT testing in industrial applications have confirmed that active infrared thermography with continuous timed images acquisition can improve the outcomes of thermal analysis. In spite of that, in cultural heritage investigations these techniques have not been yet used extensively on regular basis. This paper illustrates an application of these principle...
The ancient ceramics are a class of artefacts intensely affected by cases of art forgery. Faux ce... more The ancient ceramics are a class of artefacts intensely affected by cases of art forgery. Faux ceramic wares can be the outcome of miscellaneous assemblage of genuine and fake fragments or may be forged from scratch. Among non destructive approaches for detecting counterfeit objects, thermal methods allow to get very revealing outcomes, especially when based on non invasive techniques such as infrared thermography. This technique is applicable directly on-site by studying the temperature trend over time to identify areas with abnormal thermal behaviour. The possibility to develop an analytical technique to facilitate the recognition of the authenticity of all or part of the ancient vases, based on the detection of thermophysical parameters, is considered. This paper illustrates the determination of fundamental thermophysical properties such as emissivity and thermal diffusivity on an assortment of ceramic samples dating between 5th and 1st century B.C.. In particular a procedure for...
The contact sponge method is applied on a piece of clay brick. According to the standard, the spo... more The contact sponge method is applied on a piece of clay brick. According to the standard, the sponge is moistened with water, applied on the surface of the material by means of a cup, and weighted before and after the application. It allows us to determine the amount of water absorbed by the porous material by unit area and unit time. After the application, the moistened area begins to evaporate and cool down. The IR camera is used to monitor the temperature variation of the imprint of the sponge. Meanwhile, moisture diffuses on the material as well. The IR camera is used to monitor the in-plane diffusion of moisture by following the imprint of the sponge that enlarges with time. A suitable model is used to evaluate the shape of the imprint that varies with time.
Proceedings of the 2021 International Conference on Quantitative InfraRed Thermography
In this work, we propose to monitor the diffusion of water in the porous material, both in time a... more In this work, we propose to monitor the diffusion of water in the porous material, both in time and space by collecting a sequence of IR images, after the application of the contact sponge. The first experimentation was done in situ during a restoration campaign. To improve the understanding of the phenomena, it was planned to carry on some experiments on porous materials that are homogeneous as much as possible. A fired clay brick and a sand stone pietra serena have been used to apply the contact sponge technique and to monitor the induced effects by IRT in a controlled environment
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
The conservation of built heritage is a complex process that necessitates cooperative efforts. Ho... more The conservation of built heritage is a complex process that necessitates cooperative efforts. Holistic, integrated documentation constitutes a crucial step towards conservation by contributing to diagnosis and by extension to the effective decision-making about the required preventive and restorative interventions. It involves the recording of interdisciplinary data to produce objective diagnostical conclusions concerning the state of preservation. Although the developments in close-range sensing techniques allow increasingly accurate and rich data recording for heritage building condition surveys, the problem of combining them (to allow integrated processing) often remains unsolved. This is particularly true when surveys include vastly heterogenous documentation data. This work aims to discuss methodologies and implications of such integrations through a monumental heritage survey case-the Castello del Valentino in Turin (Italy). Visible-spectrum and infrared imagery is combined with photogrammetric techniques, terrestrial LiDAR, and microwave measurements conducted on the historical façades' surfaces, to examine the comprehensiveness of the data fusion results, as well as conclusions that can be drawn regarding previous interventions and the current condition of the monument.
This paper presents the results of a project in which a correlation was made between the results ... more This paper presents the results of a project in which a correlation was made between the results of qualitative and quantitative analyses of the state of plaster on the facade of Valentino Castle in Turin, Italy. The aim of the project was to assess its condition in order to plan restoration work.
The 16th International Workshop on Advanced Infrared Technology and Applications (AITA 2021) was ... more The 16th International Workshop on Advanced Infrared Technology and Applications (AITA 2021) was held online on 26–28 October 2021.
The work originates from the necessity of looking into the conservation conditions of the Valenti... more The work originates from the necessity of looking into the conservation conditions of the Valentino Castle's plasters in a not destructive way, in view of a possible programme of restoration. The first stage of this research concerned the application of the IR qualitative analysis. Afterwards a comparison was performed, by overlap, of the thermal anomalies recorded during two surveys carried out in opposite seasonal conditions. Moreover an inspection survey was carried out on sample spots by knocking test. In the second stage, executed on two sample areas in opposite exposure conditions, the thermal transitory was analysed by quantitative method in a case in heating, in the other one in cooling. From this research we infer the possibility of qualitative analysis use on wide surfaces to single out the possible defective zones, and the importance of the quantitative analysis use on samples to mark the different defects and to examine the influence of surface colours on thermal beh...
It is well known that IRT is among the preferred instruments in the qualitative monitoring of hum... more It is well known that IRT is among the preferred instruments in the qualitative monitoring of humidity in buildings. The evaporation of water leads to a sink of thermal energy that eventually manifests as a decreasing of the temperature. The imaging and non-contact characteristics of IRT make the monitoring of this temperature decrease particularly easy and effective. Nonetheless, the quantitative extraction of some figures that make the qualitative observation more reliable is still an open problem.
The subflorescence and efflorescence phenomena are widely acknowledged as the major causes of per... more The subflorescence and efflorescence phenomena are widely acknowledged as the major causes of permanent damage to fresco wall paintings. They are related to the occurrence of cycles of dry/wet conditions inside the walls. Therefore it is essential to identify the presence of water on the decorated surfaces and inside the walls. Additionally it is important to evaluate the source and the effects of dynamic environmental conditions on the water over time. In the artistic heritage conservation field, non-invasive imaging techniques such as infrared thermography are now largely used, mainly to pair with other quantitative local analysis. NDT testing in industrial applications have confirmed that active infrared thermography with continuous timed images acquisition can improve the outcomes of thermal analysis. In spite of that, in cultural heritage investigations these techniques have not been yet used extensively on regular basis. This paper illustrates an application of these principle...
The ancient ceramics are a class of artefacts intensely affected by cases of art forgery. Faux ce... more The ancient ceramics are a class of artefacts intensely affected by cases of art forgery. Faux ceramic wares can be the outcome of miscellaneous assemblage of genuine and fake fragments or may be forged from scratch. Among non destructive approaches for detecting counterfeit objects, thermal methods allow to get very revealing outcomes, especially when based on non invasive techniques such as infrared thermography. This technique is applicable directly on-site by studying the temperature trend over time to identify areas with abnormal thermal behaviour. The possibility to develop an analytical technique to facilitate the recognition of the authenticity of all or part of the ancient vases, based on the detection of thermophysical parameters, is considered. This paper illustrates the determination of fundamental thermophysical properties such as emissivity and thermal diffusivity on an assortment of ceramic samples dating between 5th and 1st century B.C.. In particular a procedure for...
The First Seminar of the Construction History Group (Politecnico di Torino, DAD)
12th February, ... more The First Seminar of the Construction History Group (Politecnico di Torino, DAD)
12th February, 2021 - Politecnico di Torino (Valentino Castle, room 1V) and on Microsoft Teams The seminar is organised by the members of the Construction History Group (Politecnico di Torino) with the partnership of the Department of Architecture and Design (DAD). The seminar will take place on 12th February 2021, on Microsoft Teams.
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Papers by Monica Volinia
12th February, 2021 - Politecnico di Torino (Valentino Castle, room 1V) and on Microsoft Teams
The seminar is organised by the members of the Construction History Group (Politecnico di Torino) with the partnership of the Department of Architecture and Design (DAD). The seminar will take place on 12th February 2021, on Microsoft Teams.