Establishment of preventive preservation technology based on scientific deterioration prediction of Japanese hanging scrolls

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K13142
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 03060:Cultural assets study-related
• Research Institution: Tokyo Gakugei University
• Principal Investigator: LEE KANG 東京学芸大学, 教育学部, 講師 (00807547)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 装こう文化財 / 掛軸 / 画像相関法 / 短波赤外分光分析法 / 非破壊分析 / 歪み / 応力

Outline of Final Research Achievements

A weak state due to aging of the paper induces shape deformation caused by tensile strain applied in various directions during creating, using, and repairing the hanging scroll. Therefore, in order to preserve the hanging scroll for a long period of time, it is necessary to accurately grasp the deteriorated part and its behavior. However, it takes time for visual observation to recognize changes in the painting paper, and the strain distribution in the painting paper is uneven due to the orientation and the influence of the fiber, so it is difficult to predict its behavior. In this study, the deterioration state of the paper was classified non-destructively at an invisible level and predicted the change behavior by using the short-wave infrared spectroscopy method for the chemical deterioration of the paper and digital imaging correlation method focusing on the in-plane distortion distribution for the physical deformation of the paper.

Free Research Field

保存科学

Academic Significance and Societal Importance of the Research Achievements

非破壊的な分析手法を用いることにより、目に見えにくいレベルでの劣化状態を細かく分類し、挙動を予測する手法を確立することができた。その成果を用いて今後の修復処置の内容や保管環境改善の計画を提案でき、不可逆的な損傷の拡大を抑制できると期待している。