Enhancing Access To Classic Children’s Literature

Project Gutenberg is a digital library that contains mostly public domain books, including a large number of works that belong to children’s literature. Many of these classic books are offered in a text-only format, which does not make them appealing for children to read. Moreover, stories that were written for children one hundred or more years ago, might not be readily understandable by children today due to diverging vocabularies and experiences. In this poster, we describe ongoing work to enhance the access to this children’s literature repository. Firstly, we attempt to automatically illustrate the children’s literature. Secondly, we link the text to background information to increase understanding and ease of reading. The overall motivation of this work is to make such publicly available books more easily accessible to children by making them more entertaining and engaging

Multi-scale positioning control model of a novel fluid dynamic drive by coupling process and adapted CFD models

In this paper multi-scale modeling of a novel fluid dynamic planar positioning system is described and compared with a simplified plant model. The multi-scale model is realized by coupling a mechatronic simulation model implemented in Matlab/Simulink and a transient 2D-CFD model realized with the Finite Element-software Ansys using the Flotran solver. The complex behavior of the fluidic system between two control tasks could be observed. The permission for large movements of the slide is solved using an appropriate remeshing concept.DFG/SPP/147

Contact zone analysis based on multidexel workpiece model and detailed tool geometry representation

A new method for analyzing the tool-workpiece-contact area in cutting processes is presented. To gain enhanced knowledge about tool-workpiece interaction, determination of chip thickness, contact length and resulting cross-section area of the undeformed chip is of major interest. Compared to common simulation approaches, where rotation-symmetrically constructed tool geometry is used, the new method uses a detailed three dimensional tool shape model for an extended and more accurate contact zone analysis. As a corresponding representation of the workpiece and its time dependent shape-changes a multidexel model is used. To prepare the geometric tool model, the contained BREP topology is built up within the simulation system using data from a STEP-file. First of all functional parts of the tool like rake and flank faces and cutting edges are labeled for further processing. In a second step the identified NURBS-faces are discretized for the application in material-removal calculation. This way a mesh is built-up based on triangle elements which maps the geometry of each cutting edge into a 2D parametric representation. In relation to rake face, each node is described by its position on the cutting edge and its perpendicular distance to this edge. To perform contact zone analysis each cutting geometry and a multidexel model are intersected in discrete time steps corresponding to a tool rotation of about three degrees. The intersection point of each dexel and the cutting geometry is calculated. Parametric cutting geometry allows for a direct computation of local cutting depth and contact length for each involved point. Based on the local values of contact length and cross section area of the undeformed chip the characteristic values for the entire contact zone are calculated and used to predict mechanical as well as thermal loads caused by the cutting process. To demonstrate the application of the novel approach, prediction of forces in slot milling of 1.1191 steel is presented.DFG/PP/148

Influence of AFP Process Parameters on the Temperature Distribution Used for Thermal in-process Monitoring

Automated Fiber Placement is an important manufacturing process when it comes to aerospace part generation. To minimize the machine downtime, an online monitoring system is necessary to prevent time consuming visual inspection. Therefore, a new thermal in-process monitoring system is integrated. Herewith spotted temperature difference enable the localization of placed tows and detection of defects. The thermal contrast between subsurface and tows depends on different process parameters such as lay-up speed, tooling temperature and compaction pressure. This influence is analyzed and discussed within lay-up studies to gain further knowledge about the different effects to increase the reliability of in-process monitoring as well as AFP processes.Therm-O-PlanNiedersächsisches Vorab, Volkswagen Foundatio