Crack detection in aluminum parts by using ultrasound-excited infrared thermography

Crack detection in aluminum parts by using ultrasound-excited infrared thermography

Бібліографічні деталі
Parent link:Infrared Physics & Technology
Vol. 61.— 2013.— [P. 149-156]
Автор: Xingwang Guo
Інші автори: Vavilov V. P. Vladimir Platonovich
Резюме:Title screen
Ultrasound-stimulated IR thermography, thanks to its large-area imaging capability, high test productivity and safety, is a powerful tool for the inspection of cracks in heavy aluminum structures. In thick aluminum parts, the most important defect detection parameters are the differential temperature signal and signal-to-noise ratio (SNR), which typically reach their maximums at shortly (under 1 s) after the beginning of the ultrasonic excitation. In the IR inspection of non-metals, the ultrasonic excitation may be relatively long, while in the case of highly-conductive aluminum, short-pulse (burst) stimulation (from 0.4 to 1 s) is sufficient The crack detectability can be improved by evaluating temperature images at the times when maximum SNR values occur. Further enhancement of test results can be achieved by applying some data processing algorithms which can be 1D, i.e. applied to temperature evolutions in time, or 2D, i.e. applied to spatial coordinates, or a single image.
Режим доступа: по договору с организацией-держателем ресурса
Мова:Англійська
Опубліковано: 2013
Предмети:
электронный ресурс
труды учёных ТПУ
infrared thermography
инфракрасная термография
трещины
image processing
обработка
изображения
вейвлет-анализ
wavelet analysis
Онлайн доступ:http://www.sciencedirect.com/science/article/pii/S1350449513001576#
Формат: Електронний ресурс Частина з книги
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=637068

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