Surface transient temperature inversion for hidden corrosion characterisation: theory and applications
| Parent link: | International Journal of Heat and Mass Transfer Vol. 39, iss. 2.— 1996.— P. 355-371 |
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| Daljnji autori: | , , , , |
| Sažetak: | Corrosion in metals is simulated with variations in plate thickness which are laterally infinite in a 1D model and are represented by milled flat-bottom holes in a 2D model. Temperature contrast over corroded areas is chosen as an informative parameter, quite independent of absorbed thermal energy in the infra-red thermographic test. It is shown that, due to lower sensitivity to rear-side effects at the beginning of the thermal process and increasing 3D heat diffusion effects at the end of the process, there is an optimum time to detect corrosion. A robust inversion function is proposed and its stability against variations in tested material, heat pulse duration and observation time is analysed using numerical modelling. Corrosion in a steel specimen of 1.3 mm thickness is experimentally studied, having proved the validity of the inversion algorithm with an average accuracy of 17% for material loss ranging from 74 to 14%. В фонде НТБ ТПУ отсутствует |
| Izdano: |
1996
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| Teme: | |
| Format: | Poglavlje knjige |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=599054 |