Crawling spot thermal nondestructive testing (NDT) for plaster inspection and comparison with dynamic thermography with extended heating; Thermosense XVII, Orlando, FL, United States, April 17, 1995

Crawling spot thermal nondestructive testing (NDT) for plaster inspection and comparison with dynamic thermography with extended heating; Thermosense XVII, Orlando, FL, United States, April 17, 1995

Bibliographic Details
Parent link:Thermosense XVII, Orlando, FL, United States, April 17, 1995.— 1995.— [P. 53-63]
Other Authors: Bison P. Paolo, Braggiotti А. Alberto, Bressan Ch. Chiara, Marinetti S. Sergio, Mazzoldi A. Andrea, Vavilov V. P. Vladimir Platonovich
Summary:Title screen
Defects in building materials located parallel to the front surface, like plaster detachment, or perpendicularly, such as cracks, are detected creating a space-varying heat flux. A variant of the `flying spot' technique called `crawling spot' was developed in order to fit requirements of these materials. This nondestructive method is performed with a localized radiant heating of the surface and synchronized local temperature measurement in the IR band. The identification of delaminations and cracks was theoretically and experimentally studied using two different procedures. Results obtained for plaster detachments were compared with dynamic thermography, applied with an extended excitation of the surface and analysis of the normalized thermal contrast both in amplitude and time. Another technique requires a continuously moving spot to heat the surface while a sequence of thermograms is recorded. The temperature profile of each pixel has to be reconstructed according to the spot speed and trajectory. This procedure was applied to stone crack detection. The experimental apparatus is thoroughly described
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 1995
Subjects:
электронный ресурс
труды учёных ТПУ
инфракрасная термография
infrared thermography
thermal nondestructive testing
тепловой неразрушающий контроль
Online Access:http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=999258
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=637185

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