h i g h l i g h t sAn iris mechanism proposed in response to fluctuations in solar energy. Iris motion controlled with the use of Nickel-Titanium Shape Memory Alloy springs. Variation of the force exerted by SMA spring w.r.t. temperature tested experimentally. An analytical expression that relates the aperture area and crank rotation is given. SMA springs showed promising actuation mechanism as a replacement to motor.
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