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Self-driven intelligent curved hinge based on shape-morphing composites
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DOI：10.1016/j.compstruct.2024.118329.png)
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Abstract
En 中文
The space deployable structures based on shape memory polymer composites (SMPCs) possessed excellent selfdeployable performance, which effectively avoided the impact and electromagnetic pulse (EMP) caused by the explosion of pyrotechnic devices. In this work, two types of self-driven curved hinges with different angles of 80 degrees and 115 degrees (Type 80 and Type 115) were designed based on SMPCs. The thermomechanical properties and time-temperature-dependent viscoelastic behaviors of SMPCs were systematically investigated. The three-point bending performance and cyclic shape memory performance of the developed hinges were also characterized. In addition, the deployment performances of Type 80 driven 350 g object under different heating powers were investigated in the environment of +/- 70 degrees C and 103 Pa atmospheric pressure. A staircase-like heating strategy was proposed to achieve precise and controllable deployment under this environment. The developed self-driven curved hinges were expected to have tremendous application potential on the flap actuators and optical payload rotating platforms of the satellites.
Keywords:
Shape memory polymer composites
Space deployable structure
Hinge
Journal
IF:
7.1
Papers:
1.8W
Citations:
8.0W