【摘要】 基于高精度实验测量的要求，将三维数字图像相关法(3D-DIC)用于本科生复合材料力学实验中，开发了多个复合材料力学实验方案。以复合材料I型层间断裂韧性测试为案例，基于三维光学变形测量系统(ARAMIS)开展复合材料力学实验教学。研究结果表明：通过ARAMIS系统可以准确获得不同加载时刻双悬臂梁(DCB)试件裂纹尖端附近应变场以及样品破坏过程，基于图像处理计算的断裂韧性与传统测量方法的数据拟合较好。此外，通过三维图像可以直观地观察到复合材料层合板层间开裂过程中的纤维桥连现象，为学生更好地理解复合材料层间开裂过程提供数字图像信息。该实验方法克服了传统接触式测量的局限性，为复合材料力学实验教学提供新思路。同时，课堂内学生参与样品制备与测量过程，提高了学生学习的积极性，获得了工程素养与应用创新能力的提升。更多还原

【Abstract】 Based on the requirements of high-precision experimental measurement, the three-dimensional digital image correlation method(3D-DIC) was used in composite material mechanics experiments for students, and several composite material mechanics experimental schemes were developed. This paper takes type I interlaminar fracture toughness test for composite material as a case, and carries out composite material mechanics experimental teaching based on the three-dimensional optical deformation measurement system(ARAMIS). The research results show that the strain field near the crack tip of the double cantilever beam(DCB) specimen at different loading moments and the sample failure process can be accurately obtained by the ARAMIS system, and the fracture toughness calculated based on image processing has a good fit with the data of the traditional measurement method. What is more, the fiber bridging phenomenon in the interlaminar cracking process of the composite laminate can be intuitively observed through the three-dimensional image, providing digital image information for students to better understand the interlaminar cracking process of the composite material. This experimental method overcomes the limitations of traditional contact measurement and provides new ideas for the experimental teaching of composite material mechanics. At the same time, students participate in the sample preparation and measurement process in the classroom, which improves students’ learning enthusiasm and realizes the improvement of engineering literacy and innovation ability.更多还原