computer tomograph

计算机断层扫描

• 批准号: 442394052
• 金额: --
• 依托单位: Hochschule Osnabrück
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/442394052?language=en
• 关键词: computer; tomograph

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.

这项用于采购计算机断层扫描仪的大型设备的应用旨在加强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(S)本身的影响，另一方面受制造工艺的影响。这种内部结构通常是破坏性分析的，例如通过显微切片进行显微检查。这里的缺点是2维图像，因为3维信息只能通过限定距离的显微切片以相当大的附加工作局部地有限地产生。例如，这些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。这种测量技术也很有吸引力，因为不仅可以对体积图像进行定性观察，还可以进行定量测量(例如，计量、泡沫结构分析、纤维取向的确定)。所应用的大型设备将在该大学用于材料科学领域的各种研究：-将CAD数据与实际几何形状进行比较并导出工具校正-从扫描的体积创建CAD数据-关于部件的计量学-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确定-损伤分析-缺陷的检测(例如铸造部件中的气泡，纤维复合材料中的分层)。泡沫结构(金属/塑料)的调查。连接接头界面的调查。3D打印部件(金属/塑料)的分析。有限元网格的生成，允许基于真实几何和微观结构的结构机械模拟。为了满足这些要求，将采购一种系统，利用该系统可以生成较大部件和小试件的详细图像。此外，这个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密度不同，以及各种材料密度在相似范围内的多材料系统的对比。申请的设备将显著加强应用科学大学奥斯纳布吕克在材料科学领域的研究，并通过上述分析选项获得长期和面向未来的研究机会。