2601 実時間2次元テラヘルツ断層イメージング法の開発(S22-1 非破壊評価とモニタリング(1),S22 非破壊評価とモニタリング)

概要

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We propose real-time two-dimensional (2D) terahertz (THz) tomography for 2D crosssectional imaging of moving objects. The proposed method does not require mechanical scanning elements for time delay and sample position, which are essential for conventional THz tomography. For this purpose, a 2D spatiotemporal THz image is acquired at a frame rate of 10frame/s by a combination of electro-optical time-to-space conversion and line focusing of a THz beam on a sample. We demonstrate the use of real-time 2D THz tomography for real-time monitoring of the paint thickness in a moving paint sample and the drying progress in a wet paint film. The proposed method provides a powerful tool for non-ionizing and non-contact probing in the fields of nondestructive testing and biomedical diagnostics.
社団法人日本機械学会の論文
2007-09-07