Impact of gate stack processing on the hysteresis of 300 mm integrated WS2 FETs
...
status: published
Synthesizing FDIR recovery strategies for space systems
Dynamic Fault Trees (DFTs) are powerful tools to drive the design of fault-tolerant systems. However, semantic pitfalls limit their practical utility for interconnected systems that require complex recovery strategies to maximize their reliability. This thesis discusses the shortcomings of DFTs in the context of analyzing Fault Detection, Isolation...
Reliability Based Classification of Transitions in Complex Semi-Markov Models / Tillförlitlighetsbaserad klassificering ...
Markov processes have a long history of being used to model safety critical systems. However, with the development of autonomous vehicles and their increased complexity, Markov processes have been shown to not be sufficiently precise for reliability calculations. Therefore there has been the need to consider a more general stochastic process, namel...
Micromechanical indentation study of stress related effects in transistor channels
Stress inside the chip results into deviations of the transistor performance due to the piezoresistive behavior of the silicon channels. In this thesis, micromechanical indentation is introduced to study stress effects on the electrical characteristics of CMOS transistors. The approach combines non-destructive indentation to induce well defined loc...
Anomaly symptom recognition in distributed IT systems / Erkennung von Anomaliesymptomen in verteilten IT-Systemen
The progressing global digitalization is driving innovative network technologies, computation platforms, and data-driven services. The number of components such as sensors, actuators, computing, storage, and network nodes, as well as a variety of service applications increases and results in IT systems of high complexity. A complex system is prone ...
Unterstützung der Betriebsführung von Windenergieanlagen durch Zuverlässigkeits- und Performancebenchmarks mittels unter...
Die Windindustrie ist ein heterogener Markt, der mit zehntausenden Windenergieanlagen ein wesentlicher Garant für den Erfolg der Energiewende ist. Als zentrale Instanz in der Betriebsphase übernehmen technische Betriebsführer die Verantwortung für einen wirtschaftlichen und sicheren Betrieb dieser dezentralen und unbemannt betriebenen Anlagen. Um b...
InCeight Casting C(hoch)8 2021: Proceedings of the 1st Congress for intelligent Combining of Design, Casting, Computer S...
The new Congress for intelligent Combining of Design, Casting, Computer Simulation, Checking and Cyclic Behaviour for efficient Cast Components (C(hoch)8) offers the opportunity to share experiences and knowledge in all of the disciplines involved in the product life cycle of cast components. The aim is to reach a shared understanding of the variou...
Anomaly detection in a fleet of industrial assets with hierarchical statistical modeling
Anomaly detection in asset condition data is critical for reliable industrial asset operations. But statistical anomaly classifiers require certain amount of normal operations training data before acceptable accuracy can be achieved. The necessary training data are often not available in the early periods of assets operations. This problem ...
Zur rechnerischen Lebensdauerabschätzung für Faser-Kunststoff-Verbunde
Bei der zyklischen Belastung von Faser-Kunststoff-Verbunden kommt es durch schädigungsbedingte Änderung der Steifigkeit über die gesamte Lebensdauer zu Umlagerungen von Beanspruchungen. Die vorliegende Arbeit untersucht Schädigungsprozesse auf der Mikroskala hinsichtlich ihrer Auswirkungen auf die homogenisierten Materialsteifigkeiten unidirektiona...
Quantified safety modeling of autonomous systems with hierarchical semi-Markov processes / Kvantifierad säkerhet av auto...
In quantified safety engineering, mathematical probability models are used to predict the risk of failure or hazardous events in systems. Markov processes have commonly been utilized to analyze the safety of systems modeled as discrete-state stochastic processes. In continuous time Markov models, transition time between states are exponentially dis...
