The curvature of bent profiles is the key parameter for the adaptation of process parameters in kinematic bending processes such as three-roll bending. Till today industrial standards include manual and time-consuming measurement procedures to determine the curvature, which can result in an increased process downtime. This is due to the fact that almost no efficient and also accurate curvature measuring systems exist for three-roll bending processes. This paper introduces two new application-oriented measurement systems. One is a mobile measuring device using a low cost inertial sensor, which appeals due to its easy applicability. The other is a measurement system mounted on a three-roll bending machine using laser scanners, with the purpose to provide the basis for a closed loop control in three-roll bending. The accuracy of both systems is investigated under industry-oriented conditions and error influences are analyzed. Concluding perspectives for improvements are discussed and the application potentials are evaluated.
Our case study explores how interactive systems may influence and enhance theatre performances. We pro-duced a short play featuring four interactive systems. Using a mixed-method evaluation approach we strive to answer two main research questions: How do users (actors and directors) adapt to the technology, and how do spectators perceive interactive scenes? We found the success of using interactive systems in theater to be based mainly on how interaction is conceptualized in reference to the script. Adaptions are done on both sides -- system and user need to "understand" each other, and the audience's perception is not necessarily characterized by recognizing interactivity per se but ra-ther by experiencing it in a theatre play as a whole.
Mit dem Web-Portal Vinocheck wird das Ziel einer unabhängigen Bewertungsplattform für deutsche Weine und Winzer verfolgt. Als mobile Lösung wurde im Rahmen einer Masterarbeit eine Android-App entwickelt, welche sich durch gute Usability und User Experience (UX) auszeichnen soll. Demgegenüber standen beschränkte Projekt-Ressourcen (Zeit, Geld). Es wird erläutert, wie durch "State-of-the-Art"Vorgehen und der Nutzung von "Best Practices" ein interaktiver Prototyp entwickelt und iterativ getestet wurde. Ein virtueller Weinkeller und Weinempfehlungen auf Basis von Geschmacksprofilen sollen hierbei die UX unterstützen. Zusätzlich wurden ortsund geschmacksabhängige Push-Notifications konzipiert. Die Zielgruppe umfasst Wein-Interessierte vom Neuling bis zum Weinkenner. Die Methodik orientiert sich an Scrum und dem UX-Design-Prozess nach Moser.
Industrie 4.0 wird nach der Industrialisierung, der Mechanisierung und der Automatisierung, als vierte industrielle Revolution bezeichnet. Inhalt dieser Revolution ist eine globale Vernetzung von Produktionsstandorten mit der Smart Factory als Kernkomponente. Das Bild der Produktion wird sich dadurch wandeln. Neue Produkte, Wertschopfungsketten und Geschaftsmodelle werden entstehen und bestehende sich verandern. Wie dieser Wandel sich entwickelt, wird haufig durch Forschungstatigkeiten und kreative Markterschliesung beeinflusst. Diese Ausarbeitung erlautert unterschiedliche Ansatze von Forschungstatigkeiten aus dem Umfeld der Umformtechnik und gibt damit einen Abriss der Tatigkeiten des Institutes fur Produktionstechnik und Umformmaschinen der TU Darmstadt. Hierbei werden einleitend Grundlagen von Industrie 4.0 erlautert und potentielle neue Geschaftsmodelle vorgestellt. Weiter werden cyber-physische Systeme in der Umformtechnik sowie der Wandel innerhalb von Wertschopfungsketten beschrieben. Following industrialization, mechanization und automation, industry 4.0 is classified as the fourth industrial revolution. Contents of this revolution are global networks of production sites with Smart Factories as core components resulting in a changed image of production. New products, value chains and business models will emerge and existing ones will be modified. The change is significantly influenced by the results of research activities and creative market designs. This paper illustrates different approaches of research activities in the field of metal forming and gives an outline of the activities of the Institute for Production Engineering and Forming Machines of the TU Darmstadt. The basics of industry 4.0 are explained in the introduction and potential new business models are pointed out. Furthermore, cyber-physical systems and the expected change in the value chains are described from the view point of metal forming.
While electronic books (e-books) can make intellectual content more accessible, librarians are faced with uncertainties about e-book acceptance and decreasing materials budgets. What are library user attitudes toward books accessible in print or in electronic form? How might library user attitudes inform the practices of reference, instruction, and collection management librarians? Librarians at a Midwestern public university sought guidance from its users by conducting a survey examining the relative preferences for books in paper and electronic formats. Characteristics of readers and their purposes for using books were explored, as were characteristics of the formats such as accessibility, portability, and convenience.
For the manufacturing of large quantities of profile-shaped products, the roll forming process represents one of the most effective metal forming technologies. During this process, the sheet metal will be formed into a desired cross-sectional profile using successive pairs of forming rolls. This process is well known as a very complex process in industry because of the multiplicity of the process and design parameters. For that reason, the optimization of roll forming processes using numerical methods like the finite element method is very complex and time-consuming. In this paper, a numerical method will be introduced to accelerate the simulation and to optimize the roll forming process. The newly developed algorithm will be illustrated and validated by analyzing the roll forming process. The details of the FE-model and the numerical algorithm will be described. Furthermore, the results of the numerical simulation with and without the application of the numerical algorithms will be compared. Finally, the process will be optimized using the newly developed method.