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Development of a CO2e quantification method and of solutions for reducing the greenhouse gas emissions of construction machines
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.
Above the Glebe
Life was good for the Holmes family, and they didnt want to see the British colonies engage in rebellion, especially against the most powerful empire in the world. But as the unrest grew, many men loyal to the King looked at enlistment to put down the uprising. They thought if they enlisted in the spring, after planting season, they could help suppress the revolt in time for the fall harvest. They thought it would be that simple. Above the Glebe follows a farming family as the American Revolutionary War drags on. It is the story of loyalty and vengeance, of death and survival. It is also the story of a family divided. On the one side are the five Holmes brothers, who enlist on the Loyalist side. On the other are a vindictive cousin and the two Holmes sisters, both married to revolutionaries. Their choices will have a marked impact on their lives and their futures. Above all, though, this is a story of a family and its strength.
Trajectory optimization based on recursive B-spline approximation for automated longitudinal control of a battery electric vehicle
This work describes a method for weighted least squares approximation of an unbounded number of data points using a B-spline function. The method can shift the bounded B-spline function definition range during run-time. The approximation method is used for optimizing velocity trajectories for an electric vehicle with respect to travel time, comfort and energy consumption. The trajectory optimization method is extended to a driver assistance system for automated vehicle longitudinal control.
Amy & Isabelle
From the Man Booker Prize longlisted author of My Name is Lucy Barton ? Isabelle Goodrow has been living in self-imposed exile with her daughter Amy for fifteen years. Shamed by her past and her affair with Amy's father, she has submerged herself in the routine of her dead-end job and her unrequited love for her boss. But when Amy, frustrated by her quiet and unemotional mother, embarks on an illicit affair with her maths teacher, the disgrace intensifies the shame Isabelle feels about her own past. Throughout one long, sweltering summer, as the events of the small town ebb and flow around them, Amy and Isabelle exist in silent conflict until a final act leads ultimately to the understanding they both crave.
Process simulation of wet compression moulding for continuous fibre-reinforced polymers
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.
Stochastic Range Estimation Algorithms for Electric Vehicles using Data-Driven Learning Models
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.
Fiber-dependent injection molding simulation of discontinuous reinforced polymers
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.
Experimental investigation of relevant road surface descriptors for tire-road noise measurements on low-absorbing road surfaces
Ihrer Arbeit in der Originalsprache: This work aims at identifying relevant road surface characteristics to mitigate tire-road noise of free-rolling tires using a systematic approach. As using open porous roads is already known as an efficient measure to reduce tire rolling noise, this study will focus on compact road surfaces which have a low acoustic absorption. Measurements on standardized ISO 10844 test tracks and on public roads are used to study the norm's representativity and its completeness.
Numerical prediction of curing and process-induced distortion of composite structures
Fiber-reinforced materials offer a huge potential for lightweight design of load-bearing structures. However, high-volume production of such parts is still a challenge in terms of cost efficiency and competitiveness. Numerical process simulation can be used to analyze underlying mechanisms and to find a suitable process design. In this study, the curing process of the resin is investigated with regard to its influence on RTM mold filling and process-induced distortion.
Measurable Safety of Automated Driving Functions in Commercial Motor Vehicles - Technological and Methodical Approaches
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.
