| アイテムタイプ |
共通アイテムタイプ(1) |
| 公開日 |
2025-02-04 |
| タイトル |
|
|
タイトル |
Effect of R-phase on shape recovery speed of Ti-Ni shape memory alloy wire for variable-stiffness mechanism using jamming transition phenomenon |
|
言語 |
en |
| 著者 |
Matsumoto, Naoki
Cho, Hiroki
髙嶋, 一登
Suzuki, Hidetaka
|
| 著作権関連情報 |
|
|
権利情報 |
Copyright (c) 2024 The Japan Society of Mechanical Engineers. |
| 著作権関連情報 |
|
|
権利情報Resource |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
|
権利情報 |
This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivslicense (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
The jamming transition phenomenon refers to the change in stiffness of a powder as its density changes. As a familiar example, vacuum-packed coffee grounds are hard, but when opened to allow air into the package and the density is reduced, the grounds become softer. Using Ti-Ni shape memory alloys (SMAs) and the jamming transition phenomenon, a variable-stiffness and deformable link was devised and prototyped by Takashima et al. (2022). Although the mechanism worked well, it operated slowly due to the slow shape recovery velocity of the SMA. For practical application of this mechanism, it is necessary to improve the recovery velocity of Ti-Ni SMA. Normally, Ti-Ni SMAs exhibit an austenite to martensite phase transformation; however, Miyazaki and Otsuka (1984) observed that under some conditions, R-phase transformation can occur between these phase transformations. In a previous study, Tanikata et al. (2022) observed that SMAs that show R-phase transformation during shape recovery tend to have higher recovery stress than SMAs that do not show R-phase transformation. Therefore, SMAs that show R-phase transformation during shape recovery are expected to have a high shape recovery velocity. This study investigates the effect of R-phase transformation on the recovery velocity of SMA. From the experimental results, specimens that show R-phase transformation tend to have a higher recovery velocity than specimens that do not show R-phase transformation. However, the mechanism created using materials showing R-phase transformation had a small amount of shape recovery during shape recovery. Thus, we attempted to improve the mechanical properties of the SMA by training. The device using the trained specimen demonstrated increased shape recovery compared to the device using the untrained specimen. |
|
言語 |
en |
| 書誌情報 |
en : Mechanical Engineering Journal
巻 11,
号 6,
p. 24-00130,
発行日 2024-08-18
|
| 出版社 |
|
|
出版者 |
日本機械学会 |
|
言語 |
ja |
| 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 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1299/mej.24-00130 |
| ISSN |
|
|
収録物識別子タイプ |
EISSN |
|
収録物識別子 |
2187-9745 |
| 研究者情報 |
|
|
URL |
https://hyokadb02.jimu.kyutech.ac.jp/html/328_ja.html |
| 論文ID（連携） |
|
|
値 |
10445003 |
| 連携ID |
|
|
値 |
12746 |
10445003.pdf (1.8 MB)
