CABLES MUSCULARES
CABLES MUSCULARES
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Los cables musculares o fibras de nitinol presentan una excelente alternativa a los actuadores convencionales, con una fuerza de actuación muy alta, equivalente a la de los actuadores hidráulicos, proporcionalmente a su peso, además de su acción silenciosa. Este material, inventado en 1963, aún no es muy conocido y de ahí que se haya realizado una recopilación de sus propiedades. Entre ellas, la temperatura de transición es la más importante, por ser la que activa la aleación. Muchos sistemas se han creado para alcanzar adecuadamente la temperatura de transición, y también se continúa en la investigación de métodos que ayuden a lograr un control preciso del movimiento de la aleación con memoria de forma (SMA).
Abstract: Muscle wires or nitinol fibers offter an excellent alternative to conventional actuators. They have a high actuation force, similar to that of hydraulic actuators, proportionally to their weight. In addition to this, muscle wires are silent when activated. Nitinol is a relatively new material. It was invented in 1963, and it is not very well known yet. This motivates a review of its properties in this paper. Transition temperature is the most important property, because at this point the alloy is triggered. Many methods have been created to reach this transition temperature without overheating the material. Furthermore, there is still a continuous research for finding techniques that would allow a precise control of the movement generated by the shape memory alloy (SMA).
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