8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-587-C7-590
Performance of a line-scanning thermal nondestructive evaluation system applied to low-diffusivity materialsR. Lehtiniemi1, J. Rantala1, J. Hartikainen2, J. Varis1 and M. Luukkala1
1 Department of Physics, University of Helsinki, P.O. Box 9, 00014 Helsinki, Finland
2 Finnish Naval Headquarters, P.O. Box 105, 00201 Helsinki, Finland
Performance of a thermal line scanning nondestructive evaluation system for low-diffusivity materials was studied using PVC samples having flat bottom holes. The measurements were also simulated numerically, and these results were compared with the experimental results. Multiple scans over the damaged area were found to significantly improve the contrast in thermal images.
© EDP Sciences 1994