Wv
W.C.A.M. van Nieuwburg
info
Please Note
<p>This page displays the records of the person named above and is not linked to a unique person identifier. This record may need to be merged to a profile.</p>
2 records found
1
Master thesis
(2025)
-
W.C.A.M. van Nieuwburg, F. Orefice, G. la Rocca, T. Sinnige, Bianca Giovanardi, PhD
A multidisciplinary design optimization (MDO) framework is presented for the Laser Directed Energy Deposition (L-DED) additive manufacturing process, applied to complex propeller blade geometries. The framework integrates physics-based models of powder–laser interaction, melt pool behavior, and path planning to link process parameters to key outcomes, including build time, track geometry, and defect risk. Dilution ratio, quantified as clad–substrate mixing, is used to predict defects such as lack-of-fusion and keyhole porosity. Manufacturability is further assessed via geometric quality metrics, including surface roughness and track inclination. These qualities, dilution, surface roughness, and track inclination, form a physically motivated scrap rate definition. The MDO problem minimizes build time under a scrap-rate constraint and is solved using a gradient-based approach. Model predictions are validated against experimental data, and sensitivity analyses quantify the influence of process and geometric parameters on build time and quality. Additionally the sensitivity of the MDO framework itself to thresholds settings and geometric inputs is examined. This approach establishes a physics-informed link between process conditions, defect formation, and manufacturability, supporting optimized selection of process windows and design tolerances for aerospace applications.
...
...
A multidisciplinary design optimization (MDO) framework is presented for the Laser Directed Energy Deposition (L-DED) additive manufacturing process, applied to complex propeller blade geometries. The framework integrates physics-based models of powder–laser interaction, melt pool behavior, and path planning to link process parameters to key outcomes, including build time, track geometry, and defect risk. Dilution ratio, quantified as clad–substrate mixing, is used to predict defects such as lack-of-fusion and keyhole porosity. Manufacturability is further assessed via geometric quality metrics, including surface roughness and track inclination. These qualities, dilution, surface roughness, and track inclination, form a physically motivated scrap rate definition. The MDO problem minimizes build time under a scrap-rate constraint and is solved using a gradient-based approach. Model predictions are validated against experimental data, and sensitivity analyses quantify the influence of process and geometric parameters on build time and quality. Additionally the sensitivity of the MDO framework itself to thresholds settings and geometric inputs is examined. This approach establishes a physics-informed link between process conditions, defect formation, and manufacturability, supporting optimized selection of process windows and design tolerances for aerospace applications.
Bachelor thesis
(2022)
-
M.T.K. Tran, M.D. Yang, W.C.A.M. van Nieuwburg, B.J.J. van Spreuwel, M.J. Tummers, J. Westerweel, G. Mulder
A 1:5 scaled rowing boat had been designed by a previous research group to determine the performance of rowing blades with different sizes and blade angles. In this research modifications were done to allow more control of the rowing motion. The aim of this study is to assess whether an angled oar blade can reach faster speeds with the same input power. This is done by collecting data with force and position sensors. With the collected data, the input power and speed of the rowing boat can be compared between several modified oar blades. The results of the tests in the towing tank show that it is very likely that the rowing boat can go faster with the same input power by adjusting the oar blade angle.
...
A 1:5 scaled rowing boat had been designed by a previous research group to determine the performance of rowing blades with different sizes and blade angles. In this research modifications were done to allow more control of the rowing motion. The aim of this study is to assess whether an angled oar blade can reach faster speeds with the same input power. This is done by collecting data with force and position sensors. With the collected data, the input power and speed of the rowing boat can be compared between several modified oar blades. The results of the tests in the towing tank show that it is very likely that the rowing boat can go faster with the same input power by adjusting the oar blade angle.