Nanoscale crack initiation and propagation in carbon fiber/epoxy composites using synchrotron: 3D image data

Crack initiation and propagation in carbon fiber-reinforced plastic (CFRP) was observed in situ under the application of an opening load using nondestructive synchrotron radiation X-ray computed tomography (nanoscopic SR X-CT) at a high spatial resolution of ~50 nm. Two datasets of reconstructed and segmented images were produced in typical regions, namely in the thin and thick epoxy regions where the resin thickness between the adjacent carbon fibers was small and large, respectively. The CT measurements were conducted at the NW2A beamline of the Photon Factory Advanced Ring (PF-AR) synchrotron facility using the nanoscopic SR X-CT instrument (Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Japan).

本数据集针对碳纤维增强复合材料（carbon fiber-reinforced plastic, CFRP）在张开载荷作用下的裂纹萌生与扩展行为，采用纳米级同步辐射X射线计算机断层扫描（nanoscopic SR X-CT）无损检测技术开展原位观测，空间分辨率约为50 nm。实验生成了两类典型区域的重建与分割图像数据集，分别为相邻碳纤维间树脂厚度较小的薄环氧树脂区域，以及树脂厚度较大的厚环氧树脂区域。CT扫描测量工作于日本高能加速器研究机构（High Energy Accelerator Research Organization, KEK）材料结构科学研究所的同步辐射装置光子工厂先进环（Photon Factory Advanced Ring, PF-AR）的NW2A光束线，借助纳米级SR X-CT设备完成。