Theses
Available Topics
The following tasks provide a current cross section through our research activities. Experience shows that it is possible to adapt the given or a new task in a personal conversation to the individual interests and constraints.
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Model-based surface layer characterization of gas-nitrided steels using photothermal radiometryGas nitriding is one of the most important thermochemical processes for surface treatment of steels to improve surface hardness and wear resistance. » more
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Spatially resolved temperature measurement in fluids using confocal fluorescence microscopyThe increasing demand for technical parts with micro dimensions increasingly requires the use of manufacturing techniques such as laser chemical manufacturing (LCM), whose non-contact material removal is based on a localized chemical reaction with an electrolyte... » more
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In-situ measurement of submerged micro-structures using model-based confocal fluorescence microscopyThe growing demand for technical parts with micro dimensions increasingly requires the use of manufacturing techniques such as laser chemical manufacturing (LCM), whose non-contact material removal is based on a localized chemical reaction with an electrolyte... » more
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Influence of the surface topography on the polychromatic roughness measurementSurface roughness is one of the characteristics used to evaluate the quality of manufactured components. Due to a lack of available process-internal measuring technology, the recording of surface roughness is currently carried out downstream and randomly,... » more
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Influence of the wavelengths of the light source on the polychromatic roughness measurementSurface roughness is one of the characteristics used to evaluate the quality of manufactured components » more
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Expansion of renewable energies: Where to put the power?The planning of powerlines and storage systems requires a precise knowledge of power transports in the network at different boundary conditions. The steady growth of renewables and their fluctuating power input will stress the transfer and distribution networks.... » more
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At the limits of measurement technology - Measurement of the geometry of large gears -Large gears (d > 1 m) represent a special challenge for measurement technology. The tolerances for large gears start at just under one hundredth of a millimeter, so that compliance with the golden rule of measurement technology (1/10 of the measurement uncertainty... » more
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Thermographic flow visualization with defined angular movement of the camera system for optimal image distributionThermographic images can be used to visualize the near-surface boundary layer flow of rotor blades of wind turbines during operation (Figure 1). In order to achieve a high geometric resolution for the images from distances of up to 300 m, the surface of the rotor... » more
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Holistic Approximation for partitioning and inspection of dimensional dataOptical sensor systems enable fast and non-contact measurements. Area oriented measuring data contains surface fractions of different integral geometric elements (cf. Fig. 1 a), and often the reference to the workpiece coordinate system is missing. This hinders a... » more
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FEM Simulation of the EyeFor the determination of the intraocular pressure (IOP) of the human eye, a contactless self-tonometer with acoustic excitation is to be developed as part of a national research project. The exact measurement of IOP is particularly relevant in the diagnosis of... » more
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FEM simulations for 3D printingIn additive manufacturing processes, 3D printed parts exhibit high degree of design freedom and thus they have various temperature characteristics. For a constant component quality it is interesting to know the heat flows and temperature distributions at any time... » more
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Measurement of the refractive index fields of flamesThe investigation of reactive flow processes such as flame flows is a current research area in process engi-neering and energy research. To characterize the dy-namics of these processes, optical flow measurement techniques are used in which the refractive index... » more
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Speckle photography at the electrohydraulic incremental forming of micro-samplesIn recent years, BIMAQ has developed measurement methods for in-process deformation measurements based on speckle photography. It is possible to measure nanometer displacements with a lateral resolution in the micrometer range. » more
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Development of control strategies for selective laser melting processAdditive manufacturing processes that can produce components with a high degree of design freedom using 3D printing become more and more important in industry. Due to a large number of parameters and influencing factors, the process is exposed to variations which... » more
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Intelligent methods for fast control applicationsAdditive manufacturing processes offer the capability to can produce components with a high degree of freedom and become increasingly important in industry. Current systems are usually controlled with constant manipulating parameters and therefore they still have... » more
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Design and characterization of a test stand for flow measurementA current research question is the flow behavior of cooling lubricant during the supply in grinding processes. The particle image velocimetry (PIV) method is to be used. For this purpose, particles are fed to the coolant flow whose move-ments are measured by... » more
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Uncertainty analysis of refractive index distributions on tomographic PIV measurementsParticle Image Velocimetry is a standard optical measure-ment technique for the determination of flow velocity fields. Cameras are used to measure the particle movements as-sociated with the flow. The particle movement is used to re-construct the velocity field.... » more
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In-process deformation measurements in metalworking manufacturing processesDeformation measurements based on speckle photography have been used for many years in special applications of production technology. In particular, the development of high-speed cameras with 4k resolution and the availability of ultra-short pulse lasers offer a... » more
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Realization of a self-calibrating setup for in-process deformation measurement based on speckle photographyMeasuring systems based on speckle photography can detect shifts down to the nanometer range, in particular with the aid of complex optical systems (for example microscope objectives). » more
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Preliminary investigations on the development of a medical drill method with simultaneous determination of the length of the drill channelIn the surgery and orthopedics are under the Treatment of bone fractures, but also in the correction misalignments of the skeletal system, metal implants used for stabilization in the bone. Here come in many cases, the metal plates used, which with the Bone to be... » more
Completed Theses you will find » here.