Shape memory alloys, or SMAs, possess the ability to return to their original shape after being severely deformed, either spontaneously or following the application of heat. This makes them useful materials, not just for making spectacle frames but also for technical applications such as thermostats, stents and micro-actuators. Other applications in the construction industry are conceivable too, for example in the reinforcement of bridges. Prof Masoud Motavalli, Head of "Structural Engineering Lab" at Empa, gives a demo with an iron shape memory alloy. [ Ссылка ]

Read more about the reinforcement of bridges with SMA:
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