Dual thermal/electrical-driven compressive recovery behaviors of 3D braided shape memory composite tubes. (1st March 2023)

• Record Type: Journal Article
• Authors: Qi, Yingying; Xue, Yousong; Gu, Bohong; Sun, Baozhong; Zhang, Wei
• Is Part Of: Composites science and technology. Volume 233(2023)
• Publication Date: 2023-03-01
• Subjects: A. Smart materials -- A. Carbon fiber -- B. Shape memory behaviors -- E. Compression molding -- 3D braided composite tubes; Composite materials -- Periodicals; Composite materials; Fibrous composites; Periodicals; 620.118
• DOI: 10.1016/j.compscitech.2023.109912
• Languages: English
• ISSNs: 0266-3538

Abstract

Abstract: 3D braided shape memory composite (SMPC) tubes have great potential in designing smart structural components because of high inertia moment and near-net shape manufacturing. Here we developed a 3D braided carbon fiber reinforced shape memory polyurethane-based composite tube and investigated their thermal/electrical shape memory behaviors subjected to compression. The radial and axial compressive behaviors, thermally-electrically shape memory behaviors, and shape recovery forces of the SMPC tubes with different braiding angles were analyzed. The out-of-plane displacement and temperature field were obtained with 3D digital image correlation (DIC) and infrared thermography to characterize transverse compression deformation. We found that the 60° sample had the highest recovery force compared to the other braided angle samples, while the shape recovery speed was lower than small-angle samples. In the transverse compressive electro-thermal recovery test, the 30° sample reaches to glass transition temperature faster at the same voltage, and the 45° sample exhibits maximum shape recovery speed. The 3D braided SMPC tubes exhibited excellent electro-thermal shape memory behaviors and high recovery force, which were expected to extend the application of smart actuators. Graphical abstract: Image 1 Highlights: 3D braided SMPC tubes with thermal-electrical stimuli recovery was prepared. Influence of braiding angle on thermal/electrical shape recovery was presented. Out-of-plane displacement and temperature fields in shape recovery were measured.