Multi-Voxelsize X-Ray Computed Tomography and Optical Microscopy Image Datasets of a Thermoplastic CFRP Tape

This dataset contains two- and three-dimensional image data acquired from optical microscopy and X-ray computed tomography (CT) of four continuous carbon-fibre-reinforced thermoplastic polymer tape specimens, all prepared from the same starting tape. The tape imaged is a commercial-grade Toray Cetex 1225, manufactured by Toray Advanced Composites.Each specimen was polished along a transversal cross-section and imaged with a Keyence VK-X1000 confocal scanning microscope. Complementary X-ray CT scans were performed on a Zeiss Xradia 520 Versa at three voxel sizes (0.8 µm, 2.0 µm, and 3.5 µm). For all CT scans, the field of view was adjusted to include the polished top side of the specimens, while the axis of rotation remained fixed, enabling registration of the scans across voxel sizes. These datasets provide multi-scale imaging data of CFRP tape microstructure suitable for further image processing and analysis. Registered regions of interest between sub-volumes were extracted, segmented to identify fibre and pore/air space, and processed via Structure Tensor Analysis to obtain local directionality information.<br>

本数据集包含四个连续碳纤维增强热塑性聚合物带材试样的光学显微镜与X射线计算机断层扫描（X-ray computed tomography, CT）二维及三维成像数据，所有试样均由同一初始带材制备而成。所成像的带材为东丽先进复合材料公司（Toray Advanced Composites）生产的商业级东丽Cetex 1225。每一试样均沿横向截面进行抛光，并通过基恩士（Keyence）VK-X1000共聚焦扫描显微镜完成成像。配套的X射线CT扫描在蔡司（Zeiss）Xradia 520 Versa设备上开展，采用三种体素尺寸：0.8 µm、2.0 µm及3.5 µm。所有CT扫描均调整视场以包含试样的抛光顶面，同时保持旋转轴固定，由此实现不同体素尺寸下扫描结果的配准。本数据集提供了碳纤维增强聚合物（Carbon-Fibre Reinforced Polymer, CFRP）带材微观结构的多尺度成像数据，适用于后续图像处理与分析工作。研究人员提取了子体积间经配准的感兴趣区域，通过分割操作区分纤维与孔隙/空气间隙，并借助结构张量分析（Structure Tensor Analysis）获取局部取向信息。