2026-03-14T13:40:17Z https://kanazawa-u.repo.nii.ac.jp/oai

oai:kanazawa-u.repo.nii.ac.jp:00008873 2024-06-25T05:52:04Z 4163:4171:4187

回転衝撃時における脳部物理モデルの全視野変形計測(頭部外傷) Full-Field Deformation Measurement of Brain Physical Model in Angular Rotational Impact Nishi, Takashi Miyazaki, Yusuke Anada, Kenji Tachiya, Hiroshi Hojo, Akihiro Sakamoto, Yuichiro 西, 貴士 70432135 宮崎, 祐介 穴田, 賢二 10216989 立矢, 宏 80019778 放生, 明廣 阪本, 雄一郎 Copyright © The Japan Society of Mechanical Engineers 日本機械学会 The purpose of this study is to clarify head injury mechanism such as diffused axonal injury (DAI) under rotational impact by experimenting with a head physical model having actual human shape. A head physical model constructed from individual medical images of a head was used for the experiments. The model consists of skull, CSF, falx and brain, which represents actual human head shape. The model was exposed to angular acceleration by impactor collision causing 4500 rad/s^2 peak rotational acceleration with 5ms pulse duration. After rotating 60°, the model was decelerated with 1000 rad/s^2 peak, 40ms duration. Deformation of the model was measured with full-field by using digital image correlation (DIC). Moreover, magnitude of deformation was determined by calculating maximum shear strain. As the results of experiments, shear strain concentration at the corpus callosum and shear strain communication to depth of brain were observed. The region observed this phenomenon corresponded to the region where DAI occurs most frequently in real accidents. Therefore, shear strain concentration at the corpus callosum and shear strain communication to depth of brain showed important phenomenon in head injury incidence under rotational impact. 金沢大学高度モビリティ研究所 / 金沢大学理工研究域機械工学系 2009-12-02 2017-10-03 jpn journal article VoR https://doi.org/10.24517/00008860 http://hdl.handle.net/2297/36767 https://kanazawa-u.repo.nii.ac.jp/records/8873 10.24517/00008860 http://www.jsme.or.jp/ http://ci.nii.ac.jp/naid/110008010688 AA11902376 ジョイント・シンポジウム講演論文集 : スポーツ工学シンポジウム : シンポジウム:ヒューマン・ダイナミックス : symposium on sports engineering : symposium on human dynamics 2009 311 314 https://kanazawa-u.repo.nii.ac.jp/record/8873/files/TE-PR-TACHIYA-H-311.pdf application/pdf 620.9 kB 2017-10-03