The content description of various kinds of research data using metadata requires other than bibliographical data fields that are alone not sufficient for this purpose. To properly account for research data, other metadata fields are required, often specific to a given research data set. Consequently, metadata profiles adapted to different types of resources need to be created. These are define...

On the basis, of the condition for demouldability, two levels of visibility, complete and partial visibility, are defined. The viewing directions from which a surface is completely visible can be represented as a convex region on the unit sphere called the visibility map of the surface. Algorithms are given for dividing a given object into pockets, for which visibility and demouldability can be...

The dimensioning of injection heads for the extrusion of rubber profiles is exclusively based on empiric knowledge of the non-linear flow behavior of elastomers. Thus, the design of injection heads is carried out with subject to the used rubber compound, whereas the geometry of the appropriate profile is achieved by empiric adaptation of the extrusion die. This was one of the motivations for a ...

die less explosive forming of circular plates is one of the most useful methods in the industries especially chemical applications. manufacturing of large vessel's head, multilayer rings and some parts of heat exchangers are the example of applying this method. many theoretical and experimental researches about examining the explosive forming of simple and single layer plate have been done...

Diecasting is one of the forming methods which is used for producing large number of components with good surface finish by injecting cast alloys in a metal mould under high pressure. Design of a diecasting die requires human expertise and is normally performed by trial and error method, which leads to monetary and time loss. Automation at initial die design stage will result in higher producti...

Universelles Design oder Design for All bedeutet, dass allen Nutzern die gleiche Benutzungsoberfläche angeboten wird, wobei Menschen mit Behinderungen ausdrücklich einbezogen sind. Ziel ist die größtmögliche Usability für alle Nutzer. Doch wie ist der Weg dorthin? Für uns als Usability-Professionals stellt sich die Aufgabe, Usability mit den Anforderungen der Accessibility zu verbinden: Im Tuto...

Progression of technology nodes in integrated circuit design is only possible if there are sustainable, cost-efficient processes by which these designs can be implemented. As future technologies are increasing device density, shrinking device dimensions, and employing novel structures, semiconductor processing must also advance to effectively and efficiently process these devices. Arguably one ...

Durch Simulation oder formale Verifikation wird ein Design automatisch gegen spezifizierte Eigenschaften überprüft. Schlägt die Prüfung fehl, ist manuelles Debugging notwendig, um den oder die Fehler im Design oder der Spezifikation zu finden. Erste automatische Verfahren zur Eingrenzung der Fehlerkandidaten wurden entwickelt und bereits erfolgreich eingesetzt. Die Anzahl der Fehlerkandidaten i...

Prediction of the deformation characteristics is an important step to understand the workability of alloys during imposing large strains. In this research, severe plastic deformation of Sn-5Sb solder alloy was carried out under different t deformation conditions, including the temperature range of 298, 330, 36, 400 K and die designs. The current study applies an experimentally validated finite ...

Thermal expansion and hot deformation are two phenomena causing dimensional errors in investment casting. This error occurs in dimensions between the die and wax pattern. Therefore, the wax's thermo-physical and thermo-mechanical properties, the metal die features, and the process parameters affect the dimensions of the wax pattern. Some important effective process parameters are the injection ...