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Expanded two-color thermography considering temperature-dependent emissivity of tungsten for ITER divertor infrared thermography
https://repo.qst.go.jp/records/82926
https://repo.qst.go.jp/records/82926a70c7a7a-9f71-4bd7-8656-83781dc24339
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-06-04 | |||||
| タイトル | ||||||
| タイトル | Expanded two-color thermography considering temperature-dependent emissivity of tungsten for ITER divertor infrared thermography | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Tomohiko, Ushiki
× Tomohiko, Ushiki× Ryota, Imazawa× Hidetoshi, Murakami× Kosuke, Shimizu× Sugie, Tatsuo× Takaki, Hatae× Tomohiko, Ushiki× Ryota, Imazawa× Hidetoshi, Murakami× Kosuke, Shimizu× Tatsuo, Sugie× Takaki, Hatae |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | This study developed a new correction method to reduce errors in temperature measurement caused by temperature-dependent emissivity for ITER divertor infrared (IR) thermography. In order to develop the method, we measured the spectral emissivity of tungsten from 200 °C to 1900 °C in the wavelength range of 1.5 μm to 4.5 μm and evaluated temperature measurement error of the two-color method. The results indicate that temperature-dependent emissivity is a major factor in temperature measurement errors, which suggests that accurately measuring temperature by using the conventional two-color method would prove difficult. The new correction method uses two emissivity inputs at different temperature points, in contrast to the conventional method, which uses emissivity measured at a single temperature point. Using this new correction method with a suitable wavelength combination for the two-color method, temperature measurement error was reduced to less than 5% at 1900 °C. | |||||
| 書誌情報 |
Fusion Engineering and Design 巻 168, p. 112665, 発行日 2021-05 |
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| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0920-3796 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.fusengdes.2021.112665 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1016/j.fusengdes.2021.112665 | |||||
