2023 Fiscal Year Final Research Report
A systematic study of Japanese swords by non-destructive method using synchrotron X-ray CT : toward the elucidation of sword making techniques
| Project/Area Number |
19H01358
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 03060:Cultural assets study-related
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| Research Institution | Tokyo National University of Fine Arts and Music (2022-2023)
Showa Women's University (2019-2021) |
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Principal Investigator |
Tanaka Manako 東京藝術大学, 大学院美術研究科, 准教授 (70616375)
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| Co-Investigator(Kenkyū-buntansha) |
星野 真人 公益財団法人高輝度光科学研究センター, 分光推進室, 主幹研究員 (30508461)
原田 一敏 東京藝術大学, 学内共同利用施設等, 教授 (20141989)
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| Project Period (FY) |
2019-04-01 – 2024-03-31
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| Keywords | 日本刀 / 放射光 / 非破壊分析 / X線CT |
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| Outline of Final Research Achievements |
In the first year of this study, we analyzed Japanese swords that have distinctive characteristics and in the second year we analyzed Japanese swords from the Muromachi period onward using synchrotron X-ray CT. From the third year to the final year of the project, Japanese swords from various periods were investigated. A systematic nondestructive analysis of more than 120 swords was achieved, which was the goal of this project. We analyzed precious Japanese swords from the Soshu (Masamune), Yamashiro (Awataguchi and Rai schools), and Bizen (Ichimonji school) regions during the mid Kamakura period, which is considered the golden age of Japanese swords. We were able to verify differences in the internal structure and production techniques of Japanese swords by period, region, and artist through interdisciplinary research members including sword history, conservation science, synchrotron radiation analysis, and swordsmith.
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| Free Research Field |
文化財科学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究は、最新の放射光X線CT技術を日本刀の体系的研究に応用し、非破壊で日本刀の鋼中の数十～数百ミクロンサイズの非金属介在物を高分解能で観察することで、秘伝とされてきた日本刀の具体的な作刀技術を解明することを目的としている。世界的にもその機能性や美しさが評価されている日本の代表的な文化財である日本刀を5年間で120振り以上分析し体系的な調査を行う本研究は、非常に学術的意義と独自性に富む研究である。近年日本刀に対する社会的な興味・関心が高まっており、経験に基づき行われてきた日本の作刀技術の解明および保存・伝承につながる本研究の意義は大きい。
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