テラヘルツ波を用いた溶融亜鉛メッキ鋼板上腐食生成物の定性及び定量非破壊検査応用に向けて
Qualitative and quantitative non-destructive diagnosis application on hot-dip galvanizing steel sheet by using terahertz spectroscopy
著者:
木村 隆 Takashi KIMURA 黒尾 健太 Kenta KUROO 小山 裕 Yutaka OYAMA 田邉 匡生 Tadao TANABE 西原 克浩 Katsuhiro NISHIHARA
発刊日:
公開日:
hot-dip galvanizing steelimagingnon-destructive diagnosissspectroscopyterahertz
概要
Hot-dip galvanizing steel sheet has been used as building materials or various types of steel sheets for automobiles due to its high corrosion resistance by forming oxide composites layers. It has been difficult to detect metal corrosion products on painted galvanized steel sheet surface qualitatively and quantitatively by using existing inspection methods. In this study, the corrosion products of Zinc and Aluminum on hot-dip galvanizing steel sheet was assigned by comparing the results of terahertz spectroscopy and terahertz reflection imaging. To assign the metal corrosion products more accurately, it is necessary to establish terahertz absorption database of metal corrosion products. Besides higher frequency range than 4.5THz is also required for practical use. As more database of metal corrosion is established, terahertz wave techniques is available non-destructive diagnosis for metal corrosion products on surface qualitatively and qualitatively.
