We develop an x-ray imaging system based on Talbot-Lau interferometry equipped with a mechanical structure for retracting and rotating gratings from the optical axis, which enables not only x-ray phase contrast imaging but also conventional x-ray imaging with high-magnification such as microcomputed tomography (μCT). We investigate the characterization of carbon fiber reinforced plastic (CFRP) laminates using this apparatus. Microcracks and fiber orientations are visualized in the dark-field images. Compared with the obtained μCT images, the relationship between the CFRP microstructures and the contrasts in the dark-field images are recognizable.

中文翻译：

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基于 Talbot-Lau 干涉测量法的 X 射线成像系统，带有可伸缩和可旋转的光栅，用于无损检测

我们开发了一种基于 Talbot-Lau 干涉测量法的 X 射线成像系统，该系统配备了从光轴收回和旋转光栅的机械结构，不仅可以实现 X 射线相衬成像，还可以实现传统的高倍率 X 射线成像例如微计算机断层扫描（μCT）。我们使用该设备研究了碳纤维增强塑料 (CFRP) 层压板的特性。微裂纹和纤维取向在暗场图像中可视化。与获得的 μCT 图像相比，CFRP 微结构与暗场图像对比度之间的关系是可识别的。