2019 Fiscal Year Final Research Report
International standardization of safety evaluation for millimeter wave exposure using large-scale accurate computation
| Project/Area Number |
17K06288
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Kitami Institute of Technology |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
田口 健治 北見工業大学, 工学部, 准教授 (60435485)
平田 晃正 名古屋工業大学, 工学(系)研究科(研究院), 教授 (00335374)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | 人体電磁ばく露 / ドシメトリ評価 / ミリ波 / 国際標準化 / 安全性評価 / スーパーコンピュータ |
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| Outline of Final Research Achievements |
In the current international guidelines/standards for human protection from radio waves, the whole-body averaged specific absorption rate (SAR) is used as a metric. The upper frequency of the whole-body average SAR will be revised from 10 GHz to 300 GHz in the revision of ICNIRP guidelines. However, the rationale for this exposure restriction is insufficient above 6-10 GHz due to the reliability of the human modeling. The skin modeling may become important because most electromagnetic power is absorbed in the skin layer. In this study, we fine-tuned the numerical human models into high resolution models with arbitrary skin thickness by mediating polygon model. Additionally, we showed the effect of skin thickness on the whole body average SAR.
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| Free Research Field |
電磁波工学
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| Academic Significance and Societal Importance of the Research Achievements |
人体電磁ばく露に対する安全性評価では、現在、国際ガイドラインが改定中であり，十分なデータがないミリ波である10GHzから300GHzのデータが必要である．実験的アプローチは社会的に難しく、シミュレーションによる安全性評価が必須である。この周波数帯では皮膚厚みの影響が大きく、皮膚厚みの影響を調べる事が重要である。本研究では主にこの皮膚厚みの人体ばく露への影響について調べ有意義な結果を得た。
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