computer tomograph

这种用于采购计算机断层扫描仪的大型设备的应用旨在加强奥斯纳布吕克应用科学大学的研究重点“创新材料和材料技术”。内部结构的知识通常是解释或预测各种材料的外部（宏观）行为所必需的。内部性能一方面受材料本身的影响，另一方面受制造工艺的影响。这种内部结构通常进行破坏性分析，例如通过显微切片进行显微镜检查。这里的一个缺点是二维图像，因为三维信息只能通过在限定距离处的显微切片在局部有限的情况下产生，这需要相当大的额外努力。例如，分析可用于质量保证、损坏分析或测量难以接近的细节几何形状。这种测量技术也是有吸引力的，因为不仅定性观察体积图像，而且定量测量（例如计量学、泡沫结构分析、纤维取向测定）。应用的大型设备将在大学用于材料科学领域的各种研究：- 将CAD数据与真实的几何形状进行比较并推导出刀具修正值-从扫描体积中创建CAD数据-对部件进行计量-纤维增强塑料的纤维取向和纤维体积含量的测量.塑料填料分布和数量的测定.损坏分析.缺陷检测（例如铸造部件中的气孔，纤维复合材料中的分层）.泡沫结构的研究（金属/塑料）.连接接头界面的研究. 3D打印部件的分析（金属/塑料）-生成有限元网格，允许基于真实的几何形状和微观结构进行结构力学模拟。为了满足这些要求，要获得一种系统，利用该系统可以生成较大部件和小试样的详细图像。此外，该系统必须能够分析不同的材料。这里的挑战包括金属和塑料的不同密度以及多材料系统中的对比度，其中单个材料的密度在相似的范围内。申请的设备将大大加强奥斯纳布吕克应用科学大学在材料科学领域的研究，并通过上述分析选项确保长期和面向未来的研究机会。

This application for large-scale equipment for procurement of a computer tomograph is intended to strengthen the research focus "Innovative Materials and Materials Technologies" at University of Applied Sciences Osnabrück.Knowledge of the internal structures is often necessary to explain or predict the external (macroscopic) behaviour of the various materials. The internal properties are influenced on the one hand by the material(s) themselves and on the other hand by the manufacturing process. This internal structure is usually analyzed destructively, e.g. by microsections for microscopic examinations. A disadvantage here is the 2-dimensional image, since 3-dimensional information can only be generated locally limited with considerable additional effort by microsections at a defined distance.With a computer tomograph 3-dimensional informations can be determined non-destructively. The analyses can be used, for example, for quality assurance, for damage analysis or for measuring inaccessible detail geometries. This measuring technique is also attractive because not only qualitative observations of the volume images but also quantitative measurements (e.g. metrology, analysis of foam structures, determination of fiber orientation) are possible.The applied large-scale equipment will be used at the university for various investigations in the field of materials science:- Comparison of CAD data with real geometry and derivation of tool corrections- Creation of CAD data from scanned volumes- Metrology on components- Measurement of fiber orientation and fiber volume content of fiber-reinforced plastics- Determination of filler distributions and quantities for plastics- Damage analysis- Detection of defects (e.g. blowholes in cast components, delaminations in fibre composites)- Investigation of foam structures (metal / plastic)- Investigations at the interfaces of joining joints- Analysis of 3d-printed components (metal / plastic)- Generation of finite element meshes that allow structural mechanical simulations based on real geometry and microstructure.In order to meet these requirements, a system is to be procured with which detailed images can be generated both of larger components and of small test specimens. Furthermore this system has to be able to analyse different materials. Challenges here include the different densities of metals and plastics and the contrast in multi-material systems where the density of individual materials is in a similar range.The device applied for will significantly strengthen research at the University of Applied Sciences Osnabrück in the field of materials science and secures long-term and future-oriented research opportunities through the above-mentioned analysis options.