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ISSN 1869-6058
With the further development of automated driving, the functional performance increases resulting in the need for new and comprehensive testing concepts. This doctoral work aims to enable the transition from quantitative mileage to qualitative test coverage by aggregating the results of both knowledge-based and data-driven test platforms. The validity of the test domain can be extended cost-effectively throughout the software development process to achieve meaningful test termination criteria.
Umfang: XII, 241 S.
Preis: 46.00 €
Buchdetails
This work presents novel simulation techniques for injection molding of fiber reinforced polymers. These include approaches for anisotropic flow modeling, hydrodynamic forces from fluid on fibers, contact forces between fibers, a novel fiber breakage modeling approach and anisotropic warpage analysis. Due to the coupling of fiber breakage and anisotropic flow modeling, the fiber breakage directly influences the modeled cavity pressure, which is validated with experimental data.
Umfang: XIV, 152 S.
Preis: 42.00 €
Buchdetails
Das Körperschallübertragungsverhalten von Aggregatelagerelementen wird im akustisch relevanten Frequenzbereich experimentell und numerisch untersucht. Hierzu wird zunächst eine Prüfstandsumgebung zur Ermittlung der dynamischen Körperschalltransfereigenschaften im Kilohertzbereich vorgestellt und anschließend die wichtigsten Einflussparameter auf das Bauteilverhalten experimentell und numerisch herausgearbeitet.
The structure-borne sound transmission properties of hydraulic and conventional engine mounts is analyzed experimentally and numerically in a acoustically relevant frequency range. In order to do so, first of all a test bench environment for analyzing the dynamic sound transmission properties is presented. In subsequent steps the main influence parameters on the transmission properties are determined experimentally and numerically.
Umfang: XI, 183 S.
Preis: 39.00 €
Buchdetails
Im Zuge der fortschreitenden Elektrifizierung der Fahrzeuge fällt mit steigender Effizienz die zur Verfügung stehende Abwärme des Antriebsstrangs zur Deckung des Wärmebedarfs des Innenraums. Um der dadurch reduzierten elektrischen Reichweite entgegenzuwirken, befasst sich diese Arbeit mit der Entwicklung eines ganzheitlichen energieeffizienten Thermomanagement-Systems auf Basis einer umkehrbaren Wärmepumpe, welches mit einer nichtlinearen modellprädiktiven Regelung geregelt wird.
In the course of the electrification of drive systems less waste heat is generated to cover the heat demand of the passenger cabin, which results in a significantly reduced electric range in cold seasons or climate regions. This work deals with the development of a holistic energy-efficient thermal management system to avoid a range drop due to thermal conditioning and uses nonlinear model predictive control approach to exploit the full potential of the system.
Umfang: XVII, 156 S.
Preis: 42.00 €
Buchdetails
Interdisciplinary development approaches for system-efficient lightweight design unite a comprehensive understanding of materials, processes and methods. This applies particularly to continuous fibre-reinforced plastics (CoFRPs), which offer high weight-specific material properties and enable load path-optimised designs. This thesis is dedicated to understanding and modelling Wet Compression Moulding (WCM) to facilitate large-volume production of CoFRP structural components.
Umfang: XXIII, 295 S.
Preis: 54.00 €
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Sheet Molding Compounds (SMC) are discontinuous fiber reinforced composites that are widely applied due to their ability to realize composite parts with long fibers at low cost. A novel Direct Bundle Simulation (DBS) method is proposed in this work to enable a direct simulation at component scale utilizing the observation that fiber bundles often remain in a bundled configuration during SMC compression molding.
Umfang: XX, 259 S.
Preis: 50.00 €
Buchdetails
This work focuses on the development of a quantification method for GHG (CO2e) emissions from construction machines. The method considers CO2e reduction potentials in the time past-present–future, through influencing factors from six pillars: Machine efficiency, process efficiency, energy source, operating efficiency, material efficiency and CCS. In addition, transformation solutions are proposed to reduce GHG emissions from construction machines like liquid methane, fuel cell drive or CCS.
Umfang: XXXVI, 270 S.
Preis: 54.00 €
Buchdetails
Die sensorgestützte Sortierung ermöglicht die Trennung einzelner Partikel aus einem Materialstrom. In dieser Arbeit wird eine neue Gattung eines Schüttgutsortiersystems mit Flächenkamera erforscht. Der Einsatz von Hochgeschwindigkeitskameras als Inspektionssensorik wirft aus Sicht der Informatik spannende Forschungsfragen hinsichtlich der Gewinnung und Nutzung weitergehender Merkmale, insbesondere von Bewegungsinformation über zu sortierende Materialien, auf.
Sensor-based sorting enables the separation of individual particles from a material stream. In this work, a novel sorting system using an area-scan camera is investigated. The use of high-speed cameras raises exciting research questions from a computer science perspective regarding the extraction and use of more advanced features, especially motion information about the materials to be sorted.
Umfang: XIII, 227 S.
Preis: 46.00 €
Buchdetails
Infrastructure construction is society's cornerstone and economics' catalyst. Therefore, improving mobile machinery's efficiency and reducing their cost of use have enormous economic benefits in the vast and growing construction market. In this thesis, I envision a novel concept smart working site to increase productivity through fleet management from multiple aspects and with Artificial Intelligence (AI) and Internet of Things (IoT).
Umfang: XXIV, 254 S.
Preis: 48.00 €
Buchdetails
This work aims at improving the energy consumption forecast of electric vehicles by enhancing the prediction with a notion of uncertainty. The algorithm itself learns from driver and traffic data in a training set to generate accurate, driver-individual energy consumption forecasts.
Umfang: X, 159 S.
Preis: 43.00 €
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