Title :
Sub-terahertz imaging of a painted steel
Author :
Kurabayashi, Toru ; Sakai, Shuhei ; Fujino, Kazuo
Author_Institution :
Iwate Prefectural Univ., Iwate, Japan
Abstract :
Terahertz spectroscopy of paint films has been studied in a range from 0.1 to 18 THz. The paint layers in actual use showed strong-absorption at higher frequency range, however they showed transparent characteristics in sub-THz range. Hence, sub-terahertz imaging of a painted steel plate as a method of nondestructive inspection was performed using a wave ranging from 100 to 200 GHz. An invisible rusty area covered with multiple paint layers on steel in actual use was effectively detected by power-reflection imaging.
Keywords :
millimetre wave imaging; nondestructive testing; paints; steel; submillimetre wave imaging; terahertz spectroscopy; terahertz wave imaging; frequency 0.1 THz to 18 THz; frequency 100 GHz to 200 GHz; nondestructive inspection; paint film; painted steel; subTHz range; subterahertz imaging; terahertz spectroscopy; Films; Imaging; Paints; Spectroscopy; Steel; Substrates;
Conference_Titel :
Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4244-6655-9
DOI :
10.1109/ICIMW.2010.5612796
