caa a22 4500 606172912 CHVBK 20210128100730.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s10921-015-0297-5 doi (NATIONALLICENCE)springer-10.1007/s10921-015-0297-5 Time-Dependent Passive Building Thermography for Detecting Delamination of Adhered Ceramic Cladding [Elektronische Daten] [Ecem Edis, Inês Flores-Colen, Jorge De Brito] Time-dependent passive infrared thermography (td-PIRT) is an inspection technique that can be used to detect delamination. td-PIRT was used to inspect two buildings in Lisbon (Portugal) with adhered ceramic cladding to evaluate its potential to detect delamination problems in such claddings, which is a common problem and has safety risks. The td-PIRT data were analysed quantitatively by means of simple image subtraction (SIS), nonnegative matrix factorisation (NMF), and principal component analysis (PCA). Comparative evaluations showed that td-PIRT has a great potential to detect delamination problems in adhered ceramic cladding, depending on the analysis method selected. PCA and NMF were found to be efficient methods because of their good, consistent performance in revealing defective areas. Springer Science+Business Media New York, 2015 Time-dependent passive infrared thermography nationallicence Delamination nationallicence Adhered ceramic tile nationallicence Simple image subtraction nationallicence Nonnegative matrix factorisation nationallicence Principal component analysis nationallicence h: : Hour nationallicence I $$_{\mathrm{dh}}$$ dh : : Direct solar load on the horizontal surface (W/m $$^{2})$$ 2 ) nationallicence MC: : Relative surface moisture content (%) nationallicence RH: : Relative humidity (%) nationallicence T: : Air temperature ( $$^\circ $$ ∘ C) nationallicence $$_{\mathrm{ext}}$$ ext : : Exterior nationallicence $$_{\mathrm{int}}$$ int : : Interior nationallicence $$_{\mathrm{hgc}}$$ hgc : : Solar and/or convective heat gain period nationallicence $$_{\mathrm{hlc}}$$ hlc : : Assumed convective heat loss period nationallicence $$_{\mathrm{wh}}$$ wh : : Whole inspection period nationallicence $$_{\mathrm{w}}$$ w : : Weighted PCA nationallicence Edis Ecem Faculty of Architecture, Istanbul Technical University, Taskisla Caddesi, 34437, Taksim, Istanbul, Turkey aut Flores-Colen Inês DECivil-IST, University of Lisbon, Av. Rovisco Pais, 1049-001, Lisbon, Portugal aut De Brito Jorge DECivil-IST, University of Lisbon, Av. Rovisco Pais, 1049-001, Lisbon, Portugal aut Journal of Nondestructive Evaluation Springer US; http://www.springer-ny.com 34/3(2015-09-01), 1-16 0195-9298 34:3<1 2015 34 10921 https://doi.org/10.1007/s10921-015-0297-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10921-015-0297-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Edis Ecem Faculty of Architecture, Istanbul Technical University, Taskisla Caddesi, 34437, Taksim, Istanbul, Turkey aut NATIONALLICENCE 700 1- Flores-Colen Inês DECivil-IST, University of Lisbon, Av. Rovisco Pais, 1049-001, Lisbon, Portugal aut NATIONALLICENCE 700 1- De Brito Jorge DECivil-IST, University of Lisbon, Av. Rovisco Pais, 1049-001, Lisbon, Portugal aut NATIONALLICENCE 773 0- Journal of Nondestructive Evaluation Springer US; http://www.springer-ny.com 34/3(2015-09-01), 1-16 0195-9298 34:3<1 2015 34 10921