Infrared thermographic detector of hidden corrosion; Sensor Review; Vol. 40, iss. 3

Bibliografiske detaljer
Parent link:	Sensor Review Vol. 40, iss. 3.— 2020.— [7 р.]
Hovedforfatter:	Simonov D. A. Denis Andreevich
Corporate Authors:	Национальный исследовательский Томский политехнический университет Инженерная школа неразрушающего контроля и безопасности Центр промышленной томографии Научно-производственная лаборатория "Тепловой контроль", Национальный исследовательский Томский политехнический университет Инженерная школа неразрушающего контроля и безопасности Центр промышленной томографии Научно-производственная лаборатория "Бетатронная томография крупногабаритных объектов"
Andre forfattere:	Vavilov V. P. Vladimir Platonovich, Chulkov A. O. Arseniy Olegovich
Summary:	Title screen Purpose Active infrared (IR) thermography, because of its high productivity and illustrativeness, is a promising technique in nondestructive testing (NDT). The purpose of this paper is to discuss a concept and practical implementation of a portable experimental unit intended for IR thermographic NDT of corrosion in metallic shells. Design/methodology/approach The basic theory relates to the analysis of heat conduction in a plate with rear-surface material loss subjected to pulse, thermal wave or arbitrary heating. Findings The amplitude of temperature anomalies over defects and their characteristic observation times depend on material loss, size and shape of corrosion defects. A flexible architecture of the inspection unit is proposed to include flash tubes, halogen lamps and laser-emitting diode (LED) panels as sources of stimulating thermal radiation. In particular, LED heaters might be perspective due to their narrow spectral band, which is beyond a spectral sensitivity of modern IR imagers. It has been found that the IR thermographic technique is convenient for detecting material loss of up to 15-20 per cent in uniformly painted steel shells with thickness up to 8 mm. The concept of signal-to-noise ratio has been applied to evaluate efficiency of data processing techniques, such as Fourier transform and principal component analysis. Originality/value The developed equipment and inspection guidelines can be used for detecting hidden corrosion in metallic objects, such as above-ground tanks, pipes, containers, etc. Режим доступа: по договору с организацией-держателем ресурса
Sprog:	engelsk
Udgivet:	2020
Fag:	электронный ресурс труды учёных ТПУ corrosion infrared thermography data processing material loss коррозии инфракрасная термография обработка данных материальные потери
Online adgang:	https://doi.org/10.1108/SR-12-2019-0322
Format:	Electronisk Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662330