A Preliminary Investigation of Temperature Dependency of a Shape Memory Actuator with Time-Based Control in Aircraft Interiors

2nd International Conference on Civil Engineering and Materials Science

Otibar, Dennis^1 ; Weirich, Antonia^1 ; Kortenjann, Marcus^1 ; Kuhlenkötter, Bernd^1

Ruhr-Universitat Bochum, Universitatsstraße 150, Bochum

44801, Germany^1

关键词: Ecological efficiency;    Environmental influences;    Environmental temperature;    Environmental temperature changes;    Functional properties;    Shape memory actuators;    Shape memory alloys(SMA);    Temperature dependencies;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/216/1/012009/pdf
DOI  :  10.1088/1757-899X/216/1/012009

来源: IOP

【 摘 要 】

Shape memory alloys (SMA) possess an array of unique functional properties which are influenced by a complex interaction of different factors. Due to thermal sensitivity, slight changes in the environmental temperature may cause the properties to change significantly. This poses a huge challenge especially for the use of SMAs as actuators. The most common and elementary activation strategy of SMA actuators is based on the duration of activation and cooling with constant activation parameters. However, changing environmental influences cause the necessity to modify these parameters. This circumstance needs to be especially considered in the design process of actuator controls. This paper focuses on investigating the influence of environmental temperature changes on time-based activated SMA actuators. The results of the described experiments form the base for designing reactive control strategies for SMA actuators used in alternating environments. An example for application fields with changing environments and particularly changing temperatures are aircraft related implementations. This area also stands to benefit from the actuators' advantages in ecological efficiency.