Detection of overheated parts in low-density polyethylene by terahertz absorption spectroscopy and imaging

Tomoyuki Izutsu, Daisuke Odaka, Takuya Kozai, Marina Komatsu, Yoshimichi Ohki*, Takashi Saitou, Takanori Yamazaki

*この研究の対応する著者

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Overheating during the manufacturing process of a cross-linked polyethylene-insulated cable often induces brownish resin, which may become a starting point of breakdown and water trees. In this study, an XLPE sheet was overheated and cut to many pieces of squares with various sizes from 0.5×0.5 to 10×10 mm2. Then, each piece was sandwiched between two sheets of low-density polyethylene and its absorption intensity was measured at terahertz (THz) frequencies. Furthermore, the spatial distribution of absorption was measured in the form of a two-dimensional image by scanning the sample. As a result, it has become clear that the whole absorption increases in a range from 0.5 to 5.0 THz when the volume of overheated part becomes bigger. Moreover, the distribution of overheated parts can be visualized by the THz absorption imaging.

本文言語English
ページ(範囲)603-608
ページ数6
ジャーナルIEEJ Transactions on Fundamentals and Materials
136
9
DOI
出版ステータスPublished - 2016

ASJC Scopus subject areas

  • 電子工学および電気工学

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