The combined use of IRT and LDV for the investigation of historical thin vaults

Quagliarini, Enrico; Esposito, Enrico; Conte, Antonio del

doi:10.1016/j.culher.2012.01.004

Cited by 10 publications

(6 citation statements)

References 10 publications

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“…This is the case, for example, when diffused lowerings are present and the vault must be uplifted: before any intervention the risk of damaging the historical lower surface must be assessed, in [13].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Following the good results from [13], this paper presents the first results of an experimental laboratory campaign on the use of LDV for the assessment of the state of conservation of historical plasters (usually bearing frescoes or stuccoes) on historical thin vaults, made by timber arches, reeds, and mortar: an ancient construction technique frequently found in many historical and monumental Italian buildings built between the 16 th and the 19 th century [14][15][16].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…These thin vaults are oftenin fact in a hazardous state of conservation as a result of a lack of maintenance over time [13][14][15][16]: many of them have begun to present cracks and sinkings on their lower surface, often due to i.e. the detachment between different plaster re-casting or to the detachment of the reeds from their timber arches.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

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Nondestructive Evaluation of Plasters on Historical Thin Vaults by Scanning Laser Doppler Vibrometers

Martarelli

Castellini

Quagliarini

et al. 2014

Research in Nondestructive Evaluation

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Non destructive evaluation of plasters on historical thin vaults by scanning laser Doppler vibrometers was attempted in this article. The aim was to investigate the state of conservation of historical plasters hanged from thin light vaults made by plaster and reeds that often carried on their lower surface frescoes and stuccos of high historical, artistic and architectural value. SLDV could represent an effective support for the diagnostic process of these construction system. In particular, the first results underline that processing the data so asto estimate the so-called Operational Deflection Shapes (ODS)does not seem to be helpful as a damage indicator, on the contrary modal analysis seems to be effective in localizing damages present in the specimen. KEYWORDS: thin vaults; SLDV; historical plaster; NTD; diagnostic of cultural heritage; plaster and reeds vaults.

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Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

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Nondestructive Evaluation of Plasters on Historical Thin Vaults by Scanning Laser Doppler Vibrometers

Martarelli

Castellini

Quagliarini

et al. 2014

Research in Nondestructive Evaluation

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“…The laser Doppler vibrometry (LDV) technique has demonstrated its large potential in terms of spatial resolution [1][2][3][4], moreover, as a non-destructive method, is suitable for ancient and delicate artworks [5,6]. Several authors addressed the diagnostic of artworks through laser-based methods successfully [7][8][9]. Other NDT techniques such as thermography [10], tag-recognition [11] and microwave reflectometry [12] has been also applied to delicate cultural heritage artworks.…”

Section: Introductionmentioning

confidence: 99%

Application of a non-invasive measurement technique to detect anomalies in frescoes at the US Capitol

Vignola

Corvaro

Vignola

et al. 2022

J. Phys.: Conf. Ser.

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Delamination is one of the most common issue that can affect frescoes and wall painting in general. Non-destructive techniques (NDT) are considered an effective analysis method for frescoes conservation status detection. The objective of this work was to determine the structural integrity of plaster in the United States Capitol Building through structural vibration analysis. The plaster was excited with sound, causing it to vibrate at a miniscule level. The resulting vibrations were measured using a laser vibrometer and then utilized to reveal the location and size of unseen irregularities in the structure. More than 50 individual scans were performed and analyzed using scanning laser Doppler vibrometer (LDV). The analysis identified many anomalies and assessed the status of some areas that were intact. This procedure was performed on each of the frescoes adorning the walls and ceiling of the rooms to discover areas where the painted plaster has lost adherence to the underlying architecture. The frescos were classified into three categories: intact, anomalous, in need of further analysis. A comparison with data recorded in 2004 of the same frescoes has been also performed.

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“…Clutter is usually produced as consequence of reflections on the walls and roofs close to the antenna, and obscures the records because the external anomalies are superimposed to the anomalies produced by the Laser vibrometer has been used in art diagnostic applications (i.e. Castellini et al, 1996 and2003;Borri and Grazini, 2006;Quagliarini et al, 2013). In all cases, the artworks have been excited by some actuator or loudspeakers with white noise.…”

mentioning

confidence: 99%

Integrated GPR and Laser Vibration Surveys to Preserve Prehistorical Painted Caves: Cueva Pintada Case Study

Caselles

Clapés

Sagasti

et al. 2019

International Journal of Architectural Heritage

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The study of structural safety when it is covered by important paintings require a careful analysis without affecting the paintings. Therefore, non-destructive surveys are the only feasible method to obtain data about its state. In Cueva Pintada case, the problem requires a detailed but noninvasive analysis because this cave was dug in volcanic tuff. The tuff present poor consolidation. This geological material is very sensitive to vibration. Furthermore, the proximity to the city downtown increases vibrations due to traffic. Recently, a small rock fall produces damage and alerted of the cave state of conservation. The painting walls constraint many of the NDT surveys. Two methodologies have been applied: ground-penetrating radar (GPR) and passive seismic. GPR analysis allowed determining the inner structure of the tuff cave, and results were used to determine the zones that required a wider and dense vibration study. Radar images shown important anomalies at depths of about 0.2 m to 0.8 meters and from 1.5 meters to the top of the roof, almost horizontal. Amplification factor measured by passive seismic survey range from 0.03 to 93 with near half of the ceil with amplifications higher than 5 and about 10% with amplifications over 50 times.

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The combined use of IRT and LDV for the investigation of historical thin vaults

Cited by 10 publications

References 10 publications

Nondestructive Evaluation of Plasters on Historical Thin Vaults by Scanning Laser Doppler Vibrometers

Nondestructive Evaluation of Plasters on Historical Thin Vaults by Scanning Laser Doppler Vibrometers

Application of a non-invasive measurement technique to detect anomalies in frescoes at the US Capitol

Integrated GPR and Laser Vibration Surveys to Preserve Prehistorical Painted Caves: Cueva Pintada Case Study

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