TY - CHAP AB - Rezension: Zeitschrift für philosophische Forschung 69 (2015), 614–615 (Thomas Uebel) AU - Peckhaus, Volker ED - Neuber, Matthias ID - 17629 T2 - Fiktion und Fiktionalismus. Beiträge zu Hans Vaihingers Philosophie des Als Ob TI - Unsinn und Chance eines Fiktionalismus in der Logik VL - 33 ER - TY - JOUR AB - Rezension: Math. Rev. MR3330648 (L.G. González); Zbl. Math. 1315.01023 (T.-L. Rădulescu) AU - Peckhaus, Volker ID - 17633 JF - Revue d’histoire des sciences TI - Ernst Schröder on Pasigraphy (Dossier de la logique philosophique à la logique mathématique) VL - 67 ER - TY - BOOK ED - Peckhaus, Volker ID - 17889 TI - In memoriam Helmar Frank VL - 133 ER - TY - CONF AB - Parts produced by Fused Deposition Modeling (FDM) tend to have rough and undulating surfaces with staircase effects on rounded and slanting areas of the part. This is due to the characteristics of the process. In many fields of application, high demands are made on the optical quality of the part. An improvement in the surface quality of FDM parts made of Ultem*9085 can be achieved through post-treatment with a mass finishing process. In this paper, FDM specimens are post-treated in a disk finishing unit. Influences of the mass finishing process are analyzed with regard to the dependence of surface quality on the various process parameters and on the finishing medium, grinding time and grinding speed. The finishing efficiency depends on the finishing media and decreases for lower finishing time. For all media a lower disk velocity results a smaller grinding effect, but there are clearly differences between the finishing media. The paper also discusses effects of the grinding process on the mechanical properties of the parts. Especially small part geometries and parts build in z-direction tend to break during the finishing process. AU - Fischer, M. AU - Schöppner, Volker ID - 22030 SN - 978-1-63439-708-7 T2 - ANTEC TI - Effects of a mass finishing process on parts produced from Ultem 9085 by Fused Deposition Modeling ER - TY - CONF AB - Additive production techniques have the advantage of manufacturing parts without needing a forming tool. One of the most used additive manufacturing processes is "Fused Deposition Modeling" (FDM) which allows the production of prototypes and end-use parts. Due to the manufacture layer by layer, also complex part geometries can be created in one working step. Furthermore, lightweight parts with specific inner core structures can be manufactured in order to achieve good weightrelated strength properties. In this paper the mechanical behavior of lightweight parts manufactured with the 3D production system Fortus 400mc from Stratasys and the material Polyetherimide (PEI) with the trade name Ultem*9085 is analyzed. The test specimens were built up with different inner structures and building directions. Therefore, test specimens with known lightweight core geometries (e.g. corrugated and honeycomb cores) were designed. A four-point bending test was conducted to analyze the strength properties as well as the weight-related strength properties. Additionally the influence of the structure width, the structure wall thickness and the top layer thickness was analyzed using a honeycomb structure. AU - Bagsik, A. AU - Josupeit, S. AU - Schöppner, Volker AU - Klemp, E. ID - 22021 T2 - 29th International Conference of the Polymer Processing Society TI - Mechanical Analysis of Lightweight Constructions manufactured with Fused Deposition Modeling VL - 29 ER - TY - THES AU - Specht, A. ID - 30588 TI - Ermittlung der Rotortemperatur einer Synchronmaschine mit eingebetteten Permanentmagneten für einen automobilen Traktionsantrieb mittels Beobachter basierend auf elektrischen Größen ER - TY - THES AU - Cao, Z. ID - 30574 SN - 978-3-8440-2785-3 TI - Model-Based Development of DC-DC Converters with Wide Operation Range and High Dynamics ER - TY - THES AU - Hu, M. ID - 30572 TI - Modeling Optimization and Control Design for LCC Resonant Converter Applied in Very Low Frequency High Voltage Generator ER - TY - THES AU - Pohlenz, Daniel ID - 30548 TI - Wirkungsgradoptimale Regelung eines elektrischen Fahrantriebes mit variabler Zwischenkreisspannung ER - TY - THES AU - Grote, T. ID - 30576 TI - Digital Control for Interleaved Boost Power Factor Correction (PFC) Rectifiers ER -