CHURCH OF SÃO FRANCISCO DE ASSIS: CHARACTERIZATION OF HERITAGE BY INFRARED THERMOGRAPHY

Nathália Freire Azevedo; Daniele Dias; Peter Ludvig; RACHEL JARDIM MARTINI SANTOS

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Summary

Paper Title

CHURCH OF SÃO FRANCISCO DE ASSIS: CHARACTERIZATION OF HERITAGE BY INFRARED THERMOGRAPHY

Authors

Nathália Freire Azevedo
Daniele Dias
Peter Ludvig
RACHEL JARDIM MARTINI SANTOS

Modality

Abstract

Subject area

4. Contemporary Challenges in Heritage Discourse - A critical examination of the state of the art in heritage discussions, considering the evolving perspectives and challenges that have emerged since the inception of the Venice Charter. Examining the relevance of the Venice Charter in the current context, with a focus on challenges posed by the Western divide between nature and culture, the growing importance of metropolises, social inequities, the environmental impact of human activities, disasters and conflicts, among others.

Publishing Date

11/04/2025

Country of Publishing

Brazil | Brasil

Language of Publishing

Inglês

Paper Page

https://www.even3.com.br/anais/icomos-scientific-symposium-2024-439820/848611-church-of-sao-francisco-de-assis--characterization-of-heritage-by-infrared-thermography

ISBN

978-65-272-1284-3

Keywords

thermography, ceramic tiles, detachment, rehabilitation, heritage,

Summary

The Church dedicated to São Francisco de Assis, built in 1940, is a masterpiece of the Pampulha Modern Ensemble and the first church to be built within the modern spirit in Brazil. It features inventive and original architecture, with the back facade of the Church adorned by a panel of artistic ceramic tiles by Cândido Portinari, which will be the subject of this study. Considering Article 4 of the Venice Charter, which advocates that the conservation of monuments requires, above all, permanent maintenance, and considering that this cultural asset has already been the subject of inspections by safeguarding agencies at both state and federal levels, in which points of detachment of the artistic ceramic tiles were identified through visual inspection. During one of these visits, it was verified that two ceramic tiles are displaced relative to the masonry surface, and through percussion testing, it was detected that four more ceramic tiles produce a hollow sound, indicating the possibility of also being unattached. Considering the state of the art of the cultural asset and the time elapsed between the report's and the present moment, the use of infrared thermography is proposed, a technique that can be used in the characterization of heritage, with the aim of understanding the state of conservation of the asset in question. Thermography is a non-destructive test that quantifies and records the temperature on the surface of a material according to emissivity, and has proven use in the literature for identifying loss of adhesion in ceramic tiles. In this sense, the objective of this research is to characterize the thermal behavior of the ceramic tiles that constitute the artistic panel on the back facade of the Church, seeking to identify areas of detachment. The results confirm the hypothesis that the areas of detachment absorb heat more quickly during the heating phase and dissipate it first during the cooling phase, thus making it possible to identify them accurately. To this end, an inspection was conducted during different periods of the day using a thermal camera, especially in the morning, during the heating period, and in the afternoon, during the cooling period, and the collected data being analyzed. In conclusion, with this work, and according to the objectives presented, it was possible to confirm the viability and efficiency of the thermography technique in identifying the detachment of ceramic tiles.

Title of the Event: ICOMOS SCIENTIFIC SYMPOSIUM 2024
City of the Event: Ouro Preto
Title of the Proceedings of the event: ICOMOS 2024 Scientific Symposium Proceedings
Name of the Publisher: Even3
Means of Dissemination: Meio Digital

How to cite

AZEVEDO, Nathália Freire et al.. CHURCH OF SÃO FRANCISCO DE ASSIS: CHARACTERIZATION OF HERITAGE BY INFRARED THERMOGRAPHY.. In: ICOMOS 2024 Scientific Symposium Proceedings. Anais...Ouro Preto(MG) Convention Center / UFOP/ UFMG Campus, 2024. Available in: https//www.even3.com.br/anais/icomos-scientific-symposium-2024-439820/848611-CHURCH-OF-SAO-FRANCISCO-DE-ASSIS--CHARACTERIZATION-OF-HERITAGE-BY-INFRARED-THERMOGRAPHY. Access in: 20/07/2025