Santa Maria di Collemaggio Church (L'Aquila, Italy)

Historical reconstruction by non-destructive testing techniques

Stefano Sfarra, Abdelhakim Bendada, Clemente Ibarra-Castanedo, Dario Ambrosini, Domenica Paoletti, Xavier Maldague

Research output: Contribution to journalReview article

17 Citations (Scopus)

Abstract

The main goal of this work was the non-destructive testing (NDT) of an ancient fresco (15th century) preserved in the Santa Maria di Collemaggio Church (L'Aquila, Italy) and damaged after the 2009 earthquake. Active infrared thermography (IRT), near-infrared (NIR) reflectography and ultraviolet imaging (UV) were used. In addition, the state of the fresco prior to the earthquake was analyzed by electronic speckle pattern interferometry (ESPI), digital speckle correlation (DSC), raking light, tap, and chemical NDT techniques. The use of these techniques was important for the monitoring of new damages and for a comparison between the results over the years. Square heating thermography (SHT) data were processed using principal component thermography (PCT) and pulsed phase thermography (PPT) algorithms, in order to improve the defects' signature and to reduce the impact of non-uniform heating and emissivity variations due to the painting's pigments. A multi-analysis approach, segmentation operators and a specific data correlation method emphasize the overall study of the fresco. Furthermore, the facade and the high altar area were inspected by passive thermography and ground-penetrating radar (GPR), respectively. In the present case, the combined use of NDT techniques was useful to fill in the gaps in the construction history of the building.

Original languageEnglish
Pages (from-to)367-390
Number of pages24
JournalInternational Journal of Architectural Heritage
Volume9
Issue number4
DOIs
Publication statusPublished - 1 Jan 2015
Externally publishedYes

Fingerprint

Religious buildings
Nondestructive examination
Speckle
Earthquakes
Heating
Facades
Correlation methods
Painting
Interferometry
Pigments
Mathematical operators
Radar
Historical Reconstruction
Nondestructive Testing
Fresco
Italy
Infrared radiation
Imaging techniques
Defects
Monitoring

Keywords

  • Active infrared thermography
  • Church
  • Coin tap test
  • Earthquake
  • Electronic speckle pattern interferometry
  • Fresco
  • Near-infrared reflectography
  • Raking light
  • Segmentation algorithms
  • Speckle decorrelation

ASJC Scopus subject areas

  • Conservation
  • Architecture
  • Visual Arts and Performing Arts

Cite this

Santa Maria di Collemaggio Church (L'Aquila, Italy) : Historical reconstruction by non-destructive testing techniques. / Sfarra, Stefano; Bendada, Abdelhakim; Ibarra-Castanedo, Clemente; Ambrosini, Dario; Paoletti, Domenica; Maldague, Xavier.

In: International Journal of Architectural Heritage, Vol. 9, No. 4, 01.01.2015, p. 367-390.

Research output: Contribution to journalReview article

Sfarra, Stefano ; Bendada, Abdelhakim ; Ibarra-Castanedo, Clemente ; Ambrosini, Dario ; Paoletti, Domenica ; Maldague, Xavier. / Santa Maria di Collemaggio Church (L'Aquila, Italy) : Historical reconstruction by non-destructive testing techniques. In: International Journal of Architectural Heritage. 2015 ; Vol. 9, No. 4. pp. 367-390.
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