T. Kurabayashi, Takuya Inoue, Haruka Iguchi, S. Yodokawa, Takeshi Ando, S. Kosaka
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Identification of fabric fibers and their blending ratio by terahertz spectroscopy
Absorption spectra of cellulosic fibers in THz region show discriminative absorptions which are derived from crystallized cellulose, when we prepare the samples by cutting at a length of about 0.1-0.2 mm. The blending ratio of two different kinds of fibers has been examined by using this method, and the spectra were analyzed by an analysis of principal component as a multiple classification analysis after the first derivation of the spectra. The result means the blending ratio can be identified with considerable accuracy at a few percent of reliability.
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