Thermography is used for nondestructive testing of different materials in order to detect imperfections of the material. The numerical simulation of the temperature evolution in pulse thermography is difficult due to the important boundary layers. We develop analytically supported adaptive numerical simulation methods for the reliable simulation of thermography of concrete, and model both heating procedure and initial temperature profile in order to reproduce measurements.
Additionally, we develop fast, heuristic reconstruction algorithm providing quantitative data about defect location and shape.

Publications

2013
Fast Defect Shape Reconstruction Based on the Travel Time in Pulse Thermography Nondestructive Testing of Materials and Structures, Vol.6, pp. 83-89, 2013 Sebastian Götschel, Martin Weiser, Christiane Maierhofer, Regina Richter, Mathias Röllig BibTeX
Simulation and Identification in Thermography
2012
Data Enhancement for Active Thermography E-book Proceedings, 11th International Conference on Quantitative Infrared Thermography, Naples, Gennaro Cardone (Ed.), 2012 (preprint available as ZIB-Report 12-20) Sebastian Götschel, Martin Weiser, Christiane Maierhofer, Regina Richter PDF
PDF (ZIB-Report)
BibTeX
Simulation and Identification in Thermography
2010
Development and test of a numerical model for pulse thermography in civil engineering Heat and Mass Transfer, 46(11-12), pp. 1419-1428, 2010 (preprint available as ZIB-Report 08-45) Martin Weiser, Mathias Röllig, Ralf Arndt, Bodo Erdmann PDF (ZIB-Report)
BibTeX
Simulation and Identification in Thermography