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The use of pulse-compression thermography for detecting defects in paintings

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Laureti, S., Sfarra, S., Malekmohammadi, H., Burrascano, P., Hutchins, David A., Senni, L., Silipigni, G., Maldague, X. P. V. and Ricci, M. (2018) The use of pulse-compression thermography for detecting defects in paintings. NDT & E International, 98 . pp. 147-154. doi:10.1016/j.ndteint.2018.05.003

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Official URL: http://dx.doi.org/10.1016/j.ndteint.2018.05.003

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Abstract

Interest in the conservation of paintings grows year by year. Their periodic inspection is essential for their conservation over the time. Thermographic non-destructive inspection is one technique useful for paintings, but it is essential to be able to detect buried defects while minimising the level of thermal stimulus. This paper describes a pulse-compression infrared thermography technique whereby defect detection is optimized while minimising the rise in temperature. To accomplish this task, LED lamps driven by a coded waveform based on a linear frequency modulated chirp signal have been used on paintings on both a wooden panel and a canvas layer. These specimens contained artificially fabricated defects. Although the physical condition of each painting was different, the experimental results show that the proposed signal processing procedure is able to detect defects using a low temperature contrast.

Item Type: Journal Article
Subjects: N Fine Arts > ND Painting
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH): Painting -- Conservation and restoration, Thermography
Journal or Publication Title: NDT & E International
Publisher: Elsevier Sci Ltd.
ISSN: 0963-8695
Official Date: September 2018
Dates:
DateEvent
September 2018Published
26 May 2018Available
10 May 2018Accepted
Volume: 98
Page Range: pp. 147-154
DOI: 10.1016/j.ndteint.2018.05.003
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
722134 – NDTonAIRH2020 Marie Skłodowska-Curie Actionshttp://dx.doi.org/10.13039/100010665

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