Shape morphing is an attractive functionality for fibre reinforced composites. Shape morphing composites can adopt various shapes and undergo different shape morphologies in response to a set of external stimuli. One of the approaches to attain shape morphing materials is through fabrication of multi-layered and asymmetric composites where morphing stems from structural anisotropy. In this work, asymmetric hybrid carbon fibre/glass fibre/epoxy composites are manufactured in which a mismatch in the coefficient of thermal expansion between carbon and glass fibre layers and different fibre directions at each layer resulted in a thermo-responsive morphing behaviour. The full-field displacement of laminate surfaces at the temperature range of −30 °C to 60 °C are monitored using digital image correlation technique. Classical laminate theory and Timoshenko bimetallic strip formula are coupled with experimental observations to predict the radius of curvature for laminates at different temperatures. Furthermore, finite element analyses are performed to uncover the stress state in the laminates and identify the contributing mechanisms. This study contributes to the state of the art by elaborating on the relations between morphing performance with stiffness and thermal expansion of anisotropic fibre reinforced laminates and their connections to the microstructure.

形状变形是纤维增强复合材料具有吸引力的功能。形状变形复合材料可以采用各种形状，并响应于一组外部刺激而经历不同的形状形态。获得形状变形材料的方法之一是通过多层和不对称复合材料的制造，其中变形源自结构各向异性。在这项工作中，制造了不对称混合碳纤维/玻璃纤维/环氧树脂复合材料，其中碳和玻璃纤维层之间的热膨胀系数不匹配以及每一层的纤维方向不同，会导致热响应变形行为。使用数字图像相关技术，可以监控温度范围为−30°C至60°C的层压板表面的全场位移。经典的层压板理论和Timoshenko双金属带状公式与实验观察结果相结合，可以预测不同温度下层压板的曲率半径。此外，进行有限元分析以揭示层压板中的应力状态并确定作用机理。这项研究通过阐述各向异性纤维增强层压材料的变形性能与刚度和热膨胀之间的关系以及它们与微结构的关系，为最新技术做出了贡献。