TY - CHAP A1 - Poghossian, Arshak A1 - Schumacher, Kerstin A1 - Kloock, Joachim P. A1 - Rosenkranz, Christian A1 - Schultze, Joachim W. A1 - Müller-Veggian, Mattea A1 - Schöning, Michael Josef T1 - Functional testing and characterisation of ISFETs on wafer level by means of a micro-droplet cell N2 - A wafer-level functionality testing and characterisation system for ISFETs (ionsensitive field-effect transistor) is realised by means of integration of a specifically designed capillary electrochemical micro-droplet cell into a commercial wafer prober-station. The developed system allows the identification and selection of “good” ISFETs at the earliest stage and to avoid expensive bonding, encapsulation and packaging processes for nonfunctioning ISFETs and thus, to decrease costs, which are wasted for bad dies. The developed system is also feasible for wafer-level characterisation of ISFETs in terms of sensitivity, hysteresis and response time. Additionally, the system might be also utilised for wafer-level testing of further electrochemical sensors. KW - Biosensor KW - Biosensorik KW - ISFET KW - Wafer KW - ISFET KW - wafer-level testing KW - capillary micro-droplet cell Y1 - 2006 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:a96-opus-1259 ER - TY - CHAP A1 - Wagner, Torsten A1 - Schöning, Michael Josef T1 - Preface of the Special Issue of I3S 2005 in Jülich (Germany) N2 - International Symposium on Sensor Science, I3S 2005 <3; 2005; Juelich, Germany> In: Sensors 2006, 6, 260-261 ISSN 1424-8220 KW - Biosensor KW - I3S 2005 KW - International Symposium on Sensor Science Y1 - 2006 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:a96-opus-1365 ER - TY - CHAP A1 - Gebhardt, Andreas A1 - Schmidt, Frank-Michael T1 - Farbige Prototypen als Werkzeug für den Konstrukteur T1 - Colored prototypes as instrument for the constructing engineer N2 - Physische Prototypen, also Anschauungs- und Funktionsmodelle nach den generativen oder Rapid Prototyping (RP) Verfahren haben sich in diesem Zusammenhang vor allem als Hilfsmittel zur effektiven Kommunikation und zur Evaluierung von Produkteigenschaften einen festen Platz in der Produktentstehung erworben. Die positiven Effekte der etablierten RP Verfahren sind unumstritten. Einfachere, schnellere und wirtschaftlichere Maschinen (Prototyper, Fabrikator), vor allem auch für die Büroumgebung, geben neue Impulse im Sinne der Optimierung der heutigen Verfahren. Eine neue Dimension verspricht die Option „Farbe“ der bisher fast ausschließlich monochromen Modelle. Ist Farbe nur „nice to have“ oder welchen Effekt haben farbige Modelle als Werkzeug von Konstrukteuren und Produktenwicklern? Welche Perspektiven bietet „Farbe“ darüber hinaus? KW - Prototyping KW - Rapid prototyping KW - Prototypen KW - Funktionsmodelle KW - Produktentstehung KW - Prototyper KW - Produktenwicklung KW - prototypes KW - working models KW - product emergence KW - prototyper KW - product development Y1 - 2005 ER - TY - CHAP A1 - Staat, Manfred A1 - Heitzer, Michael T1 - The restricted influence of kinematic hardening on shakedown loads N2 - Structural design analyses are conducted with the aim of verifying the exclusion of ratcheting. To this end it is important to make a clear distinction between the shakedown range and the ratcheting range. In cyclic plasticity more sophisticated hardening models have been suggested in order to model the strain evolution observed in ratcheting experiments. The hardening models used in shakedown analysis are comparatively simple. It is shown that shakedown analysis can make quite stable predictions of admissible load ranges despite the simplicity of the underlying hardening models. A linear and a nonlinear kinematic hardening model of two-surface plasticity are compared in material shakedown analysis. Both give identical or similar shakedown ranges. Structural shakedown analyses show that the loading may have a more pronounced effect than the hardening model. KW - Biomedizinische Technik KW - Einspielen KW - Shakedown KW - Ratcheting KW - Bruchmechanik KW - shakedown KW - material shakedown KW - linear kinematic hardening KW - nonlinear kinematic hardening KW - ratchetting Y1 - 2002 ER - TY - CHAP A1 - Staat, Manfred A1 - Heitzer, Michael T1 - Direct static FEM approach to limit and shakedown analysis N2 - Safety and reliability of structures may be assessed indirectly by stress distributions. Limit and shakedown theorems are simplified but exact methods of plasticity that provide safety factors directly in the loading space. These theorems may be used for a direct definition of the limit state function for failure by plastic collapse or by inadaptation. In a FEM formulation the limit state function is obtained from a nonlinear optimization problem. This direct approach reduces considerably the necessary knowledge of uncertain technological input data, the computing time, and the numerical error. Moreover, the direct way leads to highly effective and precise reliability analyses. The theorems are implemented into a general purpose FEM program in a way capable of large-scale analysis. KW - Einspielen KW - Nichtlineare Optimierung KW - Shakedown KW - Shakedown KW - limit load KW - lower bound theorem KW - nonlinear optimization KW - reliability Y1 - 2000 ER - TY - CHAP A1 - Schermutzki, Margret T1 - ECTS, Workload, Credits, Module ... : Neue Studienstrukturen in Europa N2 - Informationen zur Einführung von ECTS zur europäisch einheitlichen Bewertung von Studienleistungen Basierung der ECTS auf der tatsächlichen Arbeitsbelastung der Studierenden Möglichkeiten zur Ermittlung der Arbeitsbelastung KW - Bologna-Prozess KW - ECTS KW - Arbeitsbelastung KW - Europäisches Leistungspunktesystem KW - Bewertung von Studienleistungen . Studierendenmobilität KW - European Credit Transfer System KW - Workload Y1 - 2004 ER - TY - CHAP A1 - Schermutzki, Margret T1 - Zur Bedeutung der Workload N2 - Informationen zur Einführung von ECTS zur europäisch einheitlichen Bewertung von Studienleistungen Basierung der ECTS auf der tatsächlichen Arbeitsbelastung der Studierenden Möglichkeiten zur Ermittlung der Arbeitsbelastung KW - Bologna-Prozess KW - ECTS KW - Arbeitsbelastung KW - Europäisches Leistungspunktesystem KW - Bewertung von Studienleistungen . Studierendenmobilität KW - European Credit Transfer System KW - Workload Y1 - 2005 ER - TY - CHAP A1 - Staat, Manfred T1 - Design by Analysis of Pressure Components by non-linear Optimization N2 - This paper presents the direct route to Design by Analysis (DBA) of the new European pressure vessel standard in the language of limit and shakedown analysis (LISA). This approach leads to an optimization problem. Its solution with Finite Element Analysis is demonstrated for some examples from the DBA-Manual. One observation from the examples is, that the optimisation approach gives reliable and close lower bound solutions leading to simple and optimised design decision. KW - Analytischer Zulaessigkeitsnachweis KW - FEM KW - Einspiel-Analyse KW - design-by-analysis KW - finite element analysis KW - limit and shakedown analysis Y1 - 2003 ER - TY - CHAP A1 - Fabo, Sabine T1 - Audio-visual hybrids : between immersion and detachment N2 - Close interrelations between sound and image are not a mere phenomenon of today’s multimedia technology. The idea of the synthesis of different media lies at the core of the concept of the Gesamtkunstwerk in the second half of the 19th century and it can also be traced back to the synaesthesia debate at the beginning of the 20th century [...]. KW - Elektronische Kunst KW - Klangkunst KW - Hybride Kunst KW - Medienkunst KW - Hybrid Art KW - Sound Art KW - Audio-visual Art Y1 - 2004 ER - TY - CHAP A1 - Merten, Sabine A1 - Kämper, Klaus-Peter A1 - Brill, Manfred A1 - Picard, Antoni A1 - Cassel, Detlev A1 - Jentsch, Andreas A1 - Rollwa, Markus T1 - Virtuelle Sensor-Fertigung: Hightech mit LabVIEW N2 - Eine neue Generation von Praktika an Hochschulen wächst heran. Moderne Wege beim Verstehen und Erlernen naturwissenschaftlicher Zusammenhänge sowie industrieller Fertigungsprozesse sind gefordert. Das Technologiepraktikum „Virtuelle Sensor- Fertigung“, entwickelt im Verbundprojekt INGMEDIA an den Fachhochschulen Aachen und Zweibrücken, trägt als neuartiges Lern- und Lehrmodul dieser Forderung Rechnung. Die Studierenden lernen einen vollständigen Fertigungsprozess mit Hilfe von virtuellen, in LabVIEW programmierten Maschinen kennen, bevor sie die reale Prozesskette im Reinraum durchführen. N2 - A new generation of university laboratory courses is presently being developed. Modern concepts for the understanding and learning of applied science and industrial fabrication processes are required. The technology course “Fabrication of a microsensor”, developed by the Universities of Applied Sciences Aachen and Zweibrücken in the joint research project INGMEDIA, represents a new approach towards education in high technology production. The students learn the operation of the complex microfabrication line with the help of virtual fabrication machines, programmed in LabVIEW, before they perform the actual process in a genuine clean room. KW - LabVIEW KW - Virtuelle Sensor-Fertigung KW - Fertigungsprozess KW - virtuelle Maschinen KW - virtual sensor fabrication KW - manufacturing process KW - virtual KW - virtual machines Y1 - 2003 ER -