PhD Improving imaging methodologies for fibre-reinforced composite (CFRP) structures

纤维增强复合材料由于重量轻且具有高的比刚度和强度而在制造业，特别是汽车和航空航天中具有吸引力。为了最大限度地减少加工过程，它们通常是由大片材形成的近净形状，这会导致纤维扩散，影响各向异性，并可能导致不适合用途的弱点或组件。X射线成像（X射线计算机断层扫描，XCT）提供了一种无损检测内部材料和几何形状的方法，否则无法访问。CFRP成像有一些挑战-板和形式的高纵横比不适合标准采集协议，导致图像伪影-保持局部高分辨率对于充分观察纤维方向至关重要，但由于CFRP板和产品的典型尺寸，通常很难。使用的是沃里克的TESCAN X射线CT系统，他是这个项目的合作伙伴。

Fibre-reinforced composites are attractive in manufacturing, particularly automotive and aerospace, due to being lightweight and have high specific stiffness and strength. To minimise machining processes they are typically near-net shape formed from large sheets which leads to fibre spread, impacting anisotropy and can lead to weak points or components that are not fit for purpose.X-ray imaging (X-ray computed tomography, XCT) provides a way to non-destructively inspect internal materials and geometries that would otherwise be inaccessible. Imaging CFRP has a few challenges- The high aspect ratio of plates and forms are ill-suited for standard acquisition protocols resulting in image artefacts- Maintaining a high resolution locally is essential to sufficiently observe fibre orientation, but is frequently difficult due to the typical size of CFRP plates and productsThis project will develop novel acquisition protocols to tackle both of these issues, using the TESCAN X-ray CT system here at Warwick, and whom is a partner in this project.