J. Phys. IV France
Volume 125, June 2005
Page(s) 511 - 513

J. Phys. IV France 125 (2005) 511-513

DOI: 10.1051/jp4:2005125118

Thermographic observation of heat transport in solid foams

U. Netzelmann, M. Abuhamad and G. Walle

Fraunhofer-Institute for Nondestructive Testing, University, Bldg. 37, 66123 Saarbrücken, Germany

Heat transport in solid foams was studied by flash lamp heated dynamic thermography. For polyurethane foams, a movement of the peak temperature from the heated surface into the depth could be observed. This could be modelled by assuming a Beer optical absorber with non-adiabatic boundary. For large open pores, individual temperature-time curves were observed in the thermographic image. There is evidence for non-conductive heat transfer in the bulk of mixed-cell foams. In SiSiC ceramic foams, indications for sub-surface defects were detected.

© EDP Sciences 2005