Abstract
Low weight and high reliability are two of the most important considerations in the design of aerospace structures. Shape memory alloys (SMAs) have the functions of an actuator and a sensor, as well as having a degree of strength and an elastic modulus high enough for structural members. Accordingly, SMA elements can be used as structural members with these functions. This can reduce the number of parts and complexity of a system, and can lead to the system being light and highly reliabile. Therefore, SMAs are attractive materials in aerospace engineering and their potential in terms of replacing existing systems or developing new devices is an area that has been widely explored since they were discovered. In this chapter, the applications of SMAs in aerospace engineering are shown, which include both those already commercialized, and those used on a trial basis.
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