The Application Potentials of Shape Memory Alloys in Hand Tools

Author(s):  
Sven Langbein ◽  
Alexander Czechowicz ◽  
Frank Zobel ◽  
Peter Dültgen

Shape memory alloys show remarkable potentials as actuators and elastic elements. Due to their compact design smallest actuators with multifunctional properties can be implemented in small installation space, even in hand tools. The publication focuses on a comparison between technical SMA specifications and future perspectives regarding hand tools and portable automated tool systems. Within this publication two examples of innovative systems are discussed: A haptic information feedback system based on SMA wires implemented in handles for communication between user and tool is presented as well as an automated installation ring opener.

Author(s):  
Daniel Maiwald ◽  
André Bucht ◽  
Wolfgang Zorn ◽  
Welf-Guntram Drossel

Abstract In order to increase precision and productivity in production systems, active components are increasingly being used which operate on the basis of conventional principles such as electrodynamics, hydraulics or pneumatics. An increasing performance range leads to larger demands in terms of function and energy density, which conventional actuators can only fulfil to a limited extent. Thermal shape memory alloys are the basis of an actuator technology that can overcome these challenges, but have recently been researched and used mainly as wire actuators. The associated drawbacks regarding realizable forces and large installation space may be the reasons why shape memory alloys have not yet been established in the field of production technology. This paper presents an alternative form of using shape memory alloys, which makes it possible to realize significantly higher energy densities. Starting from specific use cases, the basic design is discussed and a developed design methodology for such actuators is presented. This methodology is validated by measurements. Finally, an exemplary actuator concept is presented.


2010 ◽  
Vol 164 ◽  
pp. 56-60
Author(s):  
Ion Lungu ◽  
Dan Mândru ◽  
Simona Noveanu

The actuators based on shape memory alloys are described in the paper. It is shown that there is necessity to develop the actuators of compact design with amplified force. Research results of such actuators are presented.


1995 ◽  
Vol 05 (C8) ◽  
pp. C8-973-C8-978
Author(s):  
M. Jurado ◽  
Ll. Mañosa ◽  
A. González-Comas ◽  
C. Stassis ◽  
A. Planes

2003 ◽  
Vol 112 ◽  
pp. 651-654 ◽  
Author(s):  
S. D. Prokoshkin ◽  
V. Brailovski ◽  
S. Turenne ◽  
I. Yu Khmelevskaya ◽  
A. V. Korotitskiy ◽  
...  

2003 ◽  
Vol 112 ◽  
pp. 615-618 ◽  
Author(s):  
P. P. Rodriguez ◽  
J. San Jean ◽  
A. Iza-Mendia ◽  
V. Recarte ◽  
J. J. Pérez-Landazabal ◽  
...  

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