The request of even more stringent restrictions, regarding efficiency and environmental impact of industrial components, determines an optimized use of primary energy but also entails the design of more lightweight, smart and flexible devices, able to adapt their operation as a function of several different inputs. In this framework, the use of a fascinating class of metallic materials, called Shape Memory Alloys (SMAs), could represent a valid support for the designers. The capability of these materials to react to an external stimulus, without continuing to supply energy to external actuators, represents, especially in the aerospace engineering field, a technological breakthrough. The present paper reports the basic ideas and summarizes the important aspects related to the development of SMA-based actuators in relation to the present state of the art. A case study of morphing blades, equipped with embedded SMA strips, for an automotive cooling fan is reported. Finally, some hints, regarding the design process of SMA-based actuators, are proposed.
On the design strategies for SMA-based morphing actuators: state of the art and common practices applied to a fascinating case study
2020-11-01
17 pages
Article (Journal)
Electronic Resource
English
Smart Skin and Actuators for Morphing Structures
Tema Archive | 2014
|Piezoelectric Microfiber Composite Actuators for Morphing Wings
Tema Archive | 2013
|Smart material actuators for airfoil morphing applications
Tema Archive | 2004
|