Abstract
Shape memory polymer (SMP) can actively deform under a certain external stimuli and maintain the deformation after the stimuli is removed. When the corresponding stimulus is applied again, it can return to its initial state. Due to their high strength, low density and high rigidity, SMP and its composites are getting increasing attention. The study of their mechanical behavior is critical for the design of composite materials. However, due to the anisotropic and viscoelastic properties of SMP composite, it is difficult to carry out a comprehensive study of structural response of SMP and its composite structures through traditional experimental methods. In this paper, the full-field displacement and strain of disc, beam and ring structures based on SMP and its composites were investigated by digital speckle correlation method, which is important for the comprehensive study of mechanical behavior and fabrication of SMP composites.
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