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Now showing items 1-9 of 9

3-D time-depending simulation of void formation in metallization structures

Dalleau, David (Hannover : Universität, 2003)

[no abstract]
An approach for choosing the cost effective design for a product-service system while maintaining its desired reliability

Schneider, Jannik Alexander; Mozgova, Iryna; Lachmayer, Roland (Cambridge : Cambridge University Press, 2019)

With the spread of product-service systems as business models the life cycle costs are of increasing importance as a measurement of product cost. A key factor that drives these costs is the desired reliability of the ...
The concept of nonlinear modes applied to friction-damped systems

Krack, Malte (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2014)

[no abstract]
Epistemological and ethical aspects of time in scientific research

Jadreškić, Daria (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)

This dissertation explores the influence of time constraints on different research practices. The first two parts present case studies, which serve as a basis for discussing the epistemological and ethical implications of ...
Evaluation of Alternative Paths for Reliable Routing in City Logistics

Groß, Patrick-Oliver; Ehmke, Jan F.; Haas, Inbal; Mattfeld, Dirk C. (Amsterdam : Elsevier B.V., 2017)

Due to varying traffic volumes and limited traffic infrastructure in urban areas, travel times are uncertain and differ during the day. In this environment, city logistics service providers (CLSP) have to fulfill deliveries ...
Exploring the Causes of Power-Converter Failure in Wind Turbines based on Comprehensive Field-Data and Damage Analysis

Fischer, Katharina; Pelka, Karoline; Puls, Sebastian; Poech, Max-Hermann; Mertens, Axel; Bartschat, Arne; Tegtmeier, Bernd; Broer, Christian; Wenske, Jan (Basel : MDPI, 2019)

Power converters are among the most frequently failing components of wind turbines. Despite their massive economic impact, the actual causes and mechanisms underlying these failures have remained in the dark for many years. ...
Meta-models for fatigue damage estimation of offshore wind turbines jacket substructures

Brandt, Sebastian; Broggi, Matteo; Hafele, Jan; Gebhardt, Cristian Guillermo; Rolfes, Raimund; Beer, Michael (London : Elsevier Ltd., 2017)

One of the main structural components of offshore wind turbines is the substructure which bridges the gap between seabed and tower foot. One possible concept employed in intermediate water depths for turbines with high-rated ...
Power Distribution and Propulsion System for an All-Electric Short-Range Commuter Aircraft—A Case Study

Ebersberger, Janine; Fauth, Leon; Keuter, Ralf; Cao, Yongtao; Freund, Yannik; Hanke-Rauschenbach, Richard; Ponick, Bernd; Mertens, Axel; Friebe, Jens (New York, NY : IEEE, 2022)

To participate in the transition towards a sustainable use of energy, the aircraft sector needs to be transformed with respect to the energy carrier and propulsion methods. For smaller aircraft, a battery-electric approach ...
Updating structural wind turbine blade models via invertible neural networks

Noever Castelos, Pablo (Hannover : Institut für Windenergiesystem, Leibniz Universität Hannover, 2023)

Wind turbine rotor blades are huge and complex composite structures that are exposed to exceptionally high loads, both extreme and fatigue loads. These can result in damages causing severe downtimes or repair costs. It is ...

Now showing items 1-9 of 9

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