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TECHNICAL PAPERS: Thermal Systems

Analysis of the Thermal Stress and Strain on Arrigo Fiammingo’s Artistic Window in the Cathedral of Perugia

[+] Author and Article Information
Cinzia Buratti

Department of Industrial Engineering, University of Perugia, Via G. Duranti 1-A/4, 06125 Perugia, Italye-mail: cburatti@unipg.it

J. Heat Transfer 123(6), 1173-1180 (Feb 01, 2001) (8 pages) doi:10.1115/1.1404120 History: Received May 02, 2000; Revised February 01, 2001
Copyright © 2001 by ASME
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References

Figures

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Arrigo Fiammingo’s window in the Cathedral of Perugia in its current state, with forced ventilation system in the space between artistic and protective glass
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Finite elements to analyze temperature, strain and stress distribution on Arrigo Fiammingo’s glass; 1, 2, and 3 are the sections of the glass first examined
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Temperature distribution with direct and diffused sunlight (situation A): (a) without external protective glass; (b) with external protective glass and natural ventilation of the inner space; (c) with external protective glass and forced ventilation of the inner space.
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Temperature distribution with only diffused sunlight (situation B): (a) without external protective glass; (b) with external protective glass and natural ventilation of the inner space; (c) with external protective glass and forced ventilation of the inner space.
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Finite elements in glass sections (1), (2), (3)
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Dilatation trends in glass sections (1), (2), (3)
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Dilatation trends on the artistic glass subjected to direct and diffused sunlight (situation A) and to only diffused sunlight (situation B)
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Dilatation trend on the glass (situation A) when only lead is considered. the dashed lines show the dilatation differences of Fig. 7(a) (when only glass is considered).
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Von Mises’ stress trends on the glass in the situations (A) and (B), with protective glass and forced ventilation in the internal space.
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Numerical accuracy: temperature (a), strain b) and stress (c) values in 30 significant nodes, with different mesh refinements.
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Current lesions (dashed lines) and lesions repaired with added lead (dotted lines) during the 1998 restoration and before

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