TY - JOUR A1 - Weritz, Friederike A1 - Arndt, Ralf A1 - Röllig, Mathias A1 - Maierhofer, Christiane A1 - Wiggenhauser, Herbert T1 - Investigation of concrete structures with pulse phase thermography N2 - The applicability of pulse phase thermography (PPT) for the investigation of structures is studied systematically on concrete test specimens and on a plastered sandstone column. In the test specimens, voids and delaminations are implemented in different depths and with different sizes, modelling real voids, honeycombing and debonding. Delaminations of plaster in concrete and masonry and behind tiles on concrete are investigated. PPT is based on the frequency analysis of the cooling down process of actively heated surfaces. Therefore, it is contactless and thus completely non-destructive (if overheating of the surface is prevented), fast and allows the inspection of large surface areas. The interpretation of amplitude and phase images gives semi-quantitative information about the observed defects. The phase images provide a deeper probing up to 10–15 cm in relation to the interpretation of the thermograms and to the amplitude images. In addition, the influence of surface inhomogeneities and non-uniform heating is reduced. KW - Pulse phase thermography KW - Impulse thermography KW - Concrete KW - Voids KW - Honeycombing PY - 2005 DO - https://doi.org/10.1007/BF02481657 SN - 1359-5997 SN - 1871-6873 VL - 38 IS - 9 SP - 843 EP - 849 PB - Springer CY - Dordrecht AN - OPUS4-12300 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Arndt, Ralf T1 - Impuls-Thermografie und Puls-Phasen-Thermografie zur Qualitätssicherung von Beschichtungen T2 - Workshop zur Anwendung der Impuls-Thermografie im Bauwesen CY - Berlin, Germany DA - 2005-04-21 PY - 2005 AN - OPUS4-11288 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Arndt, Ralf A1 - Maierhofer, Christiane A1 - Röllig, Mathias A1 - Hillemeier, B. A1 - Rieck, C. A1 - Scheel, H. A1 - Walther, A. T1 - Struktur- und Feuchteuntersuchungen von Bauteil- und Bauwerksoberflächen mit der Impuls-Thermografie T2 - Thermografie-Kolloquium der DGZfP CY - Stuttgart, Deutschland DA - 2005-09-22 KW - Impulse-Thermografie KW - Zerstörungsfreie Prüfung im Bauwesen KW - Beton KW - Mauerwerk PY - 2005 SN - 3-931381-68-4 N1 - Serientitel: DGZfP-Berichtsband – Series title: DGZfP-Berichtsband IS - 98-CD SP - 1(?) EP - 12(?) PB - DGZfP CY - Berlin AN - OPUS4-11491 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - GEN A1 - Röllig, Mathias A1 - Arndt, Ralf A1 - Maierhofer, Christiane T1 - Quantitative Untersuchung von Fehlstellen in Beton mit der Impuls-Thermografie und der Puls-Phasen-Thermografie T2 - Thermographie-Kolloquium 2005 CY - Stuttgart, Deutschland DA - 2005-09-22 KW - Impulse-Thermografie KW - Puls-Phasen-Thermografie KW - Zerstörungsfreie Prüfung im Bauwesen KW - Beton KW - Fehlstellen PY - 2005 SN - 3-931381-68-4 N1 - Serientitel: DGZfP-Berichtsband – Series title: DGZfP-Berichtsband IS - 98-CD SP - 1(?) EP - 13(?) PB - DGZfP CY - Berlin AN - OPUS4-11684 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -