A low-cost highly-portable tactile display based on shape memory alloy micro-actuators

2006 ◽  
Author(s):  
R. Velazquez ◽  
E. Pissaloux ◽  
M. Hafez ◽  
J. Szewczyk
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Low Cost ◽  
Tactile Display ◽  
Micro Actuators

A sixty-four element tactile display using shape memory alloy wires

Displays ◽  
1998 ◽  
Vol 18 (3) ◽  
pp. 163-168 ◽  
Author(s):  
P.M. Taylor ◽  
A. Moser ◽  
A. Creed
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Tactile Display

Rapid prototyping prosthetic hand acting by a low-cost shape-memory-alloy actuator

2018 ◽  
Vol 21 (2) ◽  
pp. 238-246 ◽  
Author(s):  
Enrique Soriano-Heras ◽  
Fernando Blaya-Haro ◽  
Carlos Molino ◽  
José María de Agustín del Burgo
Keyword(s):  
Shape Memory Alloy ◽  
Rapid Prototyping ◽  
Shape Memory ◽  
Low Cost ◽  
Prosthetic Hand ◽  
Shape Memory Alloy Actuator

Simulation on Uniaxial-Tension Behavior of NiTi Shape Memory Alloy Films

2009 ◽  
Vol 79-82 ◽  
pp. 1209-1212
Author(s):  
Shuang Shuang Sun ◽  
Jing Dong
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Uniaxial Tension ◽  
Theoretical Foundation ◽  
Quantitative Description ◽  
Experimental Results ◽  
Niti Shape Memory Alloy ◽  
Alloy Films ◽  
Actuation Mechanism ◽  
Micro Actuators

Based on experimental results reported in the reference, Liang-Rogers’ constitutive model for SMA is used to simulate the stress-strain curves of NiTi shape memory alloy films under uniaxial tension with isothermal conditions. The effects of film compositions and temperature on the tensile behavior of NiTi shape memory alloy films are discussed. By comparing the simulation results with the experimental results, it is found that the simulation curves agree basically with the experimental curves except that the phase-transformation regions are wider in the simulation curves. This demonstrates that the Liang-Rogers’ model can be used to predict the thermomechanical behavior of shape memory alloy films roughly. This study provides some theoretical foundation for the quantitative description and prediction of the actuation mechanism when shape memory alloy films are used as micro-actuators.

Tactile display using shape memory alloy micro-coil actuator and magnetic latch mechanism

Displays ◽  
2013 ◽  
Vol 34 (2) ◽  
pp. 89-94 ◽  
Author(s):  
T. Matsunaga ◽  
K. Totsu ◽  
M. Esashi ◽  
Y. Haga
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Tactile Display

“Monolithic Shape Memory Alloy Actuators”: A New Concept for Developing Smart Micro-Devices

1999 ◽  
Vol 604 ◽  
Author(s):  
Y. Bellouard ◽  
T. Lehnert ◽  
T. Sidler ◽  
R. Gotrhardt ◽  
R. Clavel
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Mechanical System ◽  
Design Strategy ◽  
Special Design ◽  
Friction Forces ◽  
Scale Down ◽  
Micro Actuators ◽  
Scaling Down ◽  
Micro Systems

AbstractIn micro-robotics and for micro-systems, one cannot simply scale down conventional actuators. Specific difficulties like friction forces between parts and the assembly have to be considered carefully and need a special design strategy adapted to this “micro-world”. Shape Memory Alloys (SMA) have strong potential in micro actuators. So far, most of SMA devices used the SMA material as a part of a mechanical system, which raised several problems when scaling down. In this paper, a concept of monolithic SMA micro-devices, which consists in considering the SMA as a mechanical system by itself, is presented. Several applications are shown to illustrate this concept.

Application of Shape Memory Alloy (SMA) Based Actuation for Refreshable Display of Braille

2013 ◽  
Author(s):  
Anshul Singhal ◽  
Pranay Jain ◽  
Piyush Chanana ◽  
Dhruv Jain ◽  
Rohan Paul ◽  
...  
Keyword(s):  
Developing Countries ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Speech Synthesis ◽  
Low Cost ◽  
Synthetic Speech ◽  
Piezoelectric Actuation ◽  
Tactile Displays ◽  
Braille Character ◽  
Braille Display

Persons with blindness access computers with the help of refreshable Braille displays and speech synthesis softwares. Braille has distinguished advantages over synthetic speech, especially because of its important role in uplifting education, employment and income. However, commercially available Braille displays are typically priced in the range of 2500–4000 USD (65–100 USD per Braille character) and are thus inaccessible to users in both developed and developing countries. Development of affordable Braille displays is thus a critical need. Shape Memory Alloy (SMA) based actuation is a potential low-cost alternative to currently employed piezoelectric actuation, and is being used here to develop an affordable Braille display. This paper discusses key challenges identified in SMA based actuation and proposes methods to overcome the same. Prior attempts at developing tactile displays employing SMA based actuation are reviewed and important considerations for the present study are drawn. The configuration and the design of the actuator are thus arrived at. This paper further discusses the performance of fabricated prototypes and the feedback received from limited user trials. It concludes with a discussion on future scope of the work.

Fabrication of Tactile Display Device with Individually-driven-type Shape Memory Alloy Thick Film Actuator Array

2019 ◽  
Vol 139 (9) ◽  
pp. 329-334
Author(s):  
Yusuke Kimura ◽  
Kazuki Tsuji ◽  
Hiroshi Yanatori ◽  
Konomu Abe ◽  
Kenji Iwasaki ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Thick Film ◽  
Tactile Display ◽  
Display Device
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