An Improved H<sub>2</sub>-Gas Pressure Operated LaNi<sub>5</sub> Powder-Dispersed Polyurethane/Titanium 2-Layer Actuator with Reversible Giant and Rapid Expansion by Hydrogenation
-
- Nishi Yoshitake
- Graduate School of Engineering, Tokai University Laboratoire de Génie Electrique et Ferroélectricité (LGEF), Institut National des Sciences Appliquées de Lyon (INSA Lyon)
-
- Ohkawa Junya
- Graduate School of Engineering, Tokai University
-
- Faudree Michael C.
- Graduate School of Engineering, Tokai University
-
- Kanda Masae
- Graduate School of Engineering, Tokai University Laboratoire de Génie Electrique et Ferroélectricité (LGEF), Institut National des Sciences Appliquées de Lyon (INSA Lyon) Center of Applied Superconductivity and Sustainable Energy Research, Chubu University
-
- Yuse Kaori
- Laboratoire de Génie Electrique et Ferroélectricité (LGEF), Institut National des Sciences Appliquées de Lyon (INSA Lyon)
-
- Guyomar Daniel
- Laboratoire de Génie Electrique et Ferroélectricité (LGEF), Institut National des Sciences Appliquées de Lyon (INSA Lyon)
-
- Uchida Haru-Hisa
- School of Human Development, Tokai University
Bibliographic Information
- Other Title
-
- An Improved H₂-Gas Pressure Operated LaNi₅ Powder-Dispersed Polyurethane/Titanium 2-Layer Actuator with Reversible Giant and Rapid Expansion by Hydrogenation
Search this article
Abstract
<p>A unimorph 2-layer (PU:LaNi5/Ti) actuator consisting of a driving composite sheet with large expansion of polyurethane (PU) dispersed with powder mixture of hydrogen storage alloy of 35 vol%-LaNi5 and Pd-Al2O3 catalyst prepared by solution cast method, and a 5 μm thick Ti sheet exhibited reversible and giant rapid bending motion when subjected to hydrogen atmosphere. Reversible motion was achieved below 0.20 MPa-H2 pressure where maximum strain (εmax) values on vertical and horizontal directions were more than 2400 and 1800 ppm, respectively about 1.6 times larger than that reported (1520 and 1120 ppm) for the same actuator PU:LaNi5/Cu with 10 μm thick copper (Cu) sheet. Moreover, the maximum responsiveness (dε/dt)max by hydrogenation of cyclic motion of the PU:LaNi5/Ti was higher than that of the PU:LaNi5/Cu. The increased (dε/dt)max values mostly corresponded to decreasing elastic load resistivity (dF/dε). These were due to Ti having higher stiffness and strength than Cu allowing thinner 5 μm sheet. Caution for safety is advised since values presented herein may be different when applying the actuator to zero gravity environments.</p>
Journal
-
- MATERIALS TRANSACTIONS
-
MATERIALS TRANSACTIONS 59 (1), 129-135, 2018
The Japan Institute of Metals and Materials
- Tweet
Details 詳細情報について
-
- CRID
- 1390282679228866304
-
- NII Article ID
- 130006279167
-
- NII Book ID
- AA1151294X
-
- ISSN
- 13475320
- 13459678
-
- NDL BIB ID
- 028739837
-
- Text Lang
- en
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed