TY - CONF A1 - Arndt, Ralf A1 - Maierhofer, Christiane A1 - Röllig, Mathias T1 - Quantitative Pulse-Phase-Thermography for Masonry and Concrete Structures T2 - 9th European Conference on NDT N2 - An advanced quantitative approach of pulse-phase-thermography for nondestructive testing in civil engineering is described in this contribution. The characteristic frequency of the maximum phase-contrast between defects and sound areas is used as a means for the characterization of its depth. The new approach is tested in the laboratory on concrete structures with defects of polystyrene. The surfaces of the structures were heated with IR-radiators for varying time periods. The presented investigations were funded by the Deutsche Forschungsgemeinschaft (DFG) and were carried out in co-operation with the Technical University of Berlin (TUB). T2 - 9th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 KW - Quantitative non-destructive investigation KW - Impulse-thermography KW - Pulse-phase-thermography KW - Blind / characteristic frequency KW - Concrete PY - 2006 SN - 3-931381-86-2 SP - 1(?) EP - 8(?) PB - European Federation for Non-Destructive Testing CY - Berlin AN - OPUS4-13793 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -