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Proceedings Paper

Removal of graffiti paintings from the Mansion de Mattis site in Corato (Bari), Italy: Laser deveiling or complete cleaning?
Author(s): G. Daurelio; E. S. Andriani; A. Albanese; I. M. Catalano; G. Teseo; D. Marano
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Paper Abstract

Nowadays one the main problem of stone monuments conservation is not only the natural environment deterioration but the defaced, in particular esthetic, due to graffiti. This paper presents the different stages of the cleaning graffiti research: the laboratory study phase, in which the aims were to investigate the laser cleaning effect on substrate and testing user-friendly and efficient solutions for in situ application; the application phase in which the study results were applied in the restoration of Palazzo de Mattis facade. The graffiti cleaning were carried out by using a Q-Switch Nd:YAG laser source (λ=1064 nm with pulse duration, t=8 ns, f=2 to 20 Hz, energy per impulse up to 280 mJ) in dry, wet and Very wet modes adopting the Daurelio technique n.1 (blade spot laser). The Q-Switch Nd:Yag laser source has demonstrated to be the most suitable for a fully or, according to new restoring theory, "de veiling" graffiti ablation.

Paper Details

Date Published: 21 April 2009
PDF: 7 pages
Proc. SPIE 7131, XVII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 713129 (21 April 2009); doi: 10.1117/12.816822
Show Author Affiliations
G. Daurelio, Univ. degli Studi di Bari (Italy)
E. S. Andriani, Univ. degli Studi di Bari (Italy)
A. Albanese, Univ. degli Studi di Bari (Italy)
I. M. Catalano, Univ. degli Studi di Bari (Italy)
G. Teseo, Soprintendenza per i Beni Artistici Architettonici Ambientali e Storici della Puglia (Italy)
D. Marano, Univ. degli Studi di Bari (Italy)

Published in SPIE Proceedings Vol. 7131:
XVII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Rui Vilar; Olinda Conde; Marta Fajardo; Luís O. Silva; Margarida Pires; Andrei Utkin, Editor(s)

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