Projects
Unraveling and exploiting disorder in the design and realization of metamaterial solutions for broadband noise and vibration reduction KU Leuven
From the strong need of reconciling the often conflicting and ever tightening ecologic requirements and noise and vibration exposure regulations, a vast amount of research emerged in innovative lightweight solutions with favorable vibro-acoustic properties. Among these, locally resonant metamaterials were recently shown to enable strongly improved noise and vibration reduction in targeted frequency ranges, called stop bands.
While their ...
Noise and vibration in eco-efficient powertrains KU Leuven
With increasing regulatory pressures to reduce emissions, road transport has to play its part. Over the next 30 years, as we shift towards EVs, downsized IC engines and hybrids with eco-powertrains will be central to the automotive sector. ECO DRIVE will develop new technologies for the testing and simulation of eco-powertrains, addressing the complex challenges related to combustion noise, the irritating sound from electric motors, ...
METAmaterials for VIbration and Sound reductION KU Leuven
METAVISION aims to reconcile two conflicting trends. On the one hand, people become increasingly aware of the negative health impact of excessive noise and vibration exposure. On the other hand, every kilogram of mass removed from the logistics chain has a direct economic and ecological benefit. Current noise and vibration solutions still require too much mass or volume to be practically feasible, particularly for lower frequencies. There is ...
Experimental and numerical analysis of buffeting phenomena and its influence on KU Leuven
Confined flow configurations are encountered in a wide variety of applications, such as car underbodies and ventilation systems in vehicles and buildings. Within these systems, flow detachment typically occurs due to obstacles in the flow and variations of the geometry. Because of the typically light-weight design of the confining structure, these phenomena can lead to large amplitude structure vibrations. This in turn can cause excessive ...
Model-Based Analysis and Reduction of Spread in Wind Turbine Gearbox Performance and Testing KU Leuven
This PhD research focuses on the development, usage and validation of numerical techniques to investigate and eliminate source of spread in gearbox performance and testing. This research is particularly valuable in the wind energy industry, where wind turbine noise is strictly regulated and gearboxes are designed such that tonal noise remains below prescribed levels. Non-anticipated variations in gearbox manufacturing and assembly can lead to ...
COST TU1105 # NVH analysis techniques for design and optimization of hybrid and electric vehicles KU Leuven
Efficient theoretical and numerical prediction techniques for the design and dynamic analysis of innovative lightweight materials with favourable vibro-acoustic properties. KU Leuven
The proposed research comes at the crossing of two trends. On the one hand, people become more and more aware of the negative health impact of excessive noise and vibration exposure. On the other hand, every kilogram of mass removed from the logistics chain has a direct economic and ecological benefit. However, noise control engineering solutions typically come with significant mass additions. Therefore, there is a strong need for low-mass, ...
Full-field camera measurements for structural and vibro-acoustic system analysis KU Leuven
Cameras are an aspiring technology for structural and vibro-acoustic system analysis. They offer full-field, transient, and contactless displacement measurements. However, measurement noise is one of the main limitations preventing their widespread application.
This thesis proposes new noise reduction algorithms taking advantage of geometry and physics information. By approximating with local polynomial functions (polynomial filtering) ...
Analysis and mitigation of pressure fluctuations in compressors KU Leuven
Compressors are used worldwide in various applications: from compressing air that is used to power pneumatic tools, to compressing a refrigerant in a cooling installation. Inside a compressor, gas is aspirated at a low pressure, compressed and then discharged at a higher pressure. During the suction and discharge process, the unsteady mass flow creates pressure fluctuations in intake and exhaust systems. These pressure fluctuations can be ...