Nondestructive evaluation of delaminations in fresco plaster using transient infrared thermography

E. Grinzato, P. Bison, S. Marinetti, V. Vavilov

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)


A transient method of thermal nondestructive testing is applied to detect subsurface delaminations in fresco plaster as a part of restoration work that is being conducted in Italy. A two-dimensional cylindrical model is used to estimate temperature distribution in materials with defects of various sizes and depths. The possibility of testing plaster with thickness up to 30 mm is illustrated. The choice of heating technique, which is supposed to be really nondestructive to ancient frescoes and powerful enough to create reasonable temperatures signals, is considered. Test duration and optimum sampling interval are discussed also. The structural noise of plaster and the influence of surface painting are investigated.

Original languageEnglish
Pages (from-to)257-274
Number of pages18
JournalResearch in Nondestructive Evaluation
Issue number4
Publication statusPublished - Dec 1994

ASJC Scopus subject areas

  • Materials Science (miscellaneous)

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