@inproceedings{MeierJongmannsEgbers, author = {Meier, Martin and Jongmanns, Marcel and Egbers, Christoph}, title = {Investigations on thermal electro-hydrodynamic convection in a cylindrical gap}, series = {Experimentelle Str{\"o}mungsmechanik, 24. Fachtagung 6.-8. September 2016 Cottbus}, booktitle = {Experimentelle Str{\"o}mungsmechanik, 24. Fachtagung 6.-8. September 2016 Cottbus}, editor = {Egbers, Christoph}, publisher = {German Association for Laser Anemometry GALA e.V.}, address = {Karlsruhe}, isbn = {978-3-9816764-2-6}, pages = {S. 39}, language = {en} } @inproceedings{JongmannsSeeligEgbersetal., author = {Jongmanns, Marcel and Seelig, Torsten and Egbers, Christoph and Meier, Martin and Meyer, Antoine and Crumeyrolle, Olivier and Mutabazi, Innocent}, title = {Thermoelectrohydrodynamic experiments in a cylindrical gap}, series = {Book of abstracts, School ISTROF 2016, Instabilities and Turbulence in Strato-Rotational Flows, July 11-13th, 2016, Le Havre}, booktitle = {Book of abstracts, School ISTROF 2016, Instabilities and Turbulence in Strato-Rotational Flows, July 11-13th, 2016, Le Havre}, language = {en} } @inproceedings{MeierJongmannsRuoffetal., author = {Meier, Martin and Jongmanns, Marcel and Ruoff, Vilko and Egbers, Christoph and Meyer, Antoine and Mutabazi, Innocent}, title = {Flow pattern and heat transfer in a cylindrical annulus under 1g and low-g conditions: Experiments}, series = {Joint Conference ISPS-7 and ELGRA-25 October, 2-6 2017, Juan-les-Pins, France, Abstract book}, booktitle = {Joint Conference ISPS-7 and ELGRA-25 October, 2-6 2017, Juan-les-Pins, France, Abstract book}, pages = {S. 48}, language = {en} } @inproceedings{MeyerCrumeyrolleMutabazietal., author = {Meyer, Antoine and Crumeyrolle, Olivier and Mutabazi, Innocent and Meier, Martin and Jongmanns, Marcel and Ruoff, Vilko and Seelig, Torsten and Egbers, Christoph}, title = {Flow pattern and heat transfer in a cylindrical annulus under 1g and low-g conditions: theory and simulation}, series = {Joint Conference ISPS-7 and ELGRA-25 October, 2-6 2017, Juan-les-Pins, France, Abstract book}, booktitle = {Joint Conference ISPS-7 and ELGRA-25 October, 2-6 2017, Juan-les-Pins, France, Abstract book}, pages = {S. 48}, language = {en} } @misc{SeeligMeyerGerstneretal., author = {Seelig, Torsten and Meyer, Antoine and Gerstner, Philipp and Meier, Martin and Jongmanns, Marcel and Baumann, Martin and Heuveline, Vincent and Egbers, Christoph}, title = {Dielectrophoretic force-driven convection in annular geometry under Earth's gravity}, series = {International Journal of Heat and Mass Transfer}, volume = {139}, journal = {International Journal of Heat and Mass Transfer}, issn = {0017-9310}, doi = {10.1016/j.ijheatmasstransfer.2019.04.068}, pages = {386 -- 398}, language = {en} } @misc{MeyerMeierJongmannsetal., author = {Meyer, Antoine and Meier, Martin and Jongmanns, Marcel and Seelig, Torsten and Egbers, Christoph and Mutabazi, Innocent}, title = {Effect of the Initial Conditions on the Growth of Thermoelectric Instabilities During Parabolic}, series = {Microgravity Science and Technology}, volume = {31}, journal = {Microgravity Science and Technology}, number = {5}, issn = {1875-0494}, doi = {10.1007/s12217-019-09755-1}, pages = {715 -- 721}, language = {en} } @inproceedings{JongmannsMeyerMeieretal., author = {Jongmanns, Marcel and Meyer, Antoine and Meier, Martin and Kang, Changwoo and Mutabazi, Innocent and Egbers, Christoph}, title = {Experiments on thermoelectric convection in dielectric liquids in a cylindrical annulus under parabolic flight conditions}, series = {Abstract booklet for the International Conference on Rayleigh B{\´e}nard Turbulence, May 14-18, 2018, Enschede, NL}, booktitle = {Abstract booklet for the International Conference on Rayleigh B{\´e}nard Turbulence, May 14-18, 2018, Enschede, NL}, pages = {S. 20}, language = {en} } @inproceedings{MeierEgbersMutabazietal., author = {Meier, Martin and Egbers, Christoph and Mutabazi, Innocent and Meyer, Antoine and Seelig, Torsten and Jongmanns, Marcel}, title = {Enhanced Heat transfer in a cylindrical annulus under 1g and low-g conditions}, series = {69th International Astronautical Congress, 1 - 5 October 2018, Bremen, Germany}, booktitle = {69th International Astronautical Congress, 1 - 5 October 2018, Bremen, Germany}, pages = {1}, language = {en} } @inproceedings{JongmannsMeierMeyeretal., author = {Jongmanns, Marcel and Meier, Martin and Meyer, Antoine and Egbers, Christoph}, title = {Bestimmung von Str{\"o}mungsmustern in einem Zylinderspalt mit radialem elektrischen Kraftfeld unter Schwerelosigkeit}, series = {26. GALA - Fachtagung Experimentelle Str{\"o}mungsmechanik, 4. - 6. September 2018, Rostock}, booktitle = {26. GALA - Fachtagung Experimentelle Str{\"o}mungsmechanik, 4. - 6. September 2018, Rostock}, publisher = {Deutsche Gesellschaft f{\"u}r Laser-Anemometrie}, address = {Karlsruhe}, isbn = {978-3-9816764-5-7}, pages = {S. 15}, language = {de} } @inproceedings{MutabaziKangMeyeretal., author = {Mutabazi, Innocent and Kang, Changwoo and Meyer, Antoine and Jongmanns, Marcel and Meier, Martin and Egbers, Christoph}, title = {Thermoelectric convection in dielectric liquids in a cylindrical annulus}, series = {International Conference on Rayleigh B{\´e}nard Turbulence, May 14-18, 2018, Enschede, NL}, booktitle = {International Conference on Rayleigh B{\´e}nard Turbulence, May 14-18, 2018, Enschede, NL}, pages = {S. 83}, language = {en} } @inproceedings{MeyerJongmannsMeieretal., author = {Meyer, Antoine and Jongmanns, Marcel and Meier, Martin and Seelig, Torsten and Kang, Changwoo and Mutabazi, Innocent and Egbers, Christoph}, title = {Experiments on thermoelectric convection induced in a cylindrical annulus under microgravity conditions}, series = {20th International Couette-Taylor Workshop, 11-13 July 2018, Marseille, France, Book of abstracts}, booktitle = {20th International Couette-Taylor Workshop, 11-13 July 2018, Marseille, France, Book of abstracts}, pages = {2}, language = {en} } @inproceedings{SeeligJongmannsMeyeretal., author = {Seelig, Torsten and Jongmanns, Marcel and Meyer, Antoine and Meier, Martin and Egbers, Christoph}, title = {Onset of dielectrophoretic force-driven convection in annular geometry under Earth's gravity}, series = {20th International Couette-Taylor Workshop, 11-13 July 2018, Marseille, France, Book of abstracts}, booktitle = {20th International Couette-Taylor Workshop, 11-13 July 2018, Marseille, France, Book of abstracts}, pages = {2}, language = {en} } @misc{MonsalveMelnikovStolzetal., author = {Monsalve, Jorge Mario and Melnikov, Anton and Stolz, Michael and Mrosk, Andreas and Jongmanns, Marcel and Wall, Franziska and Langa, Sergiu and Marica-Bercu, Ioana and Br{\"a}ndel, Tim and Kircher, Marco and Schenk, Hermann A. G. and Kaiser, Bert and Schenk, Harald}, title = {Proof of concept of an air-coupled electrostatic ultrasonic transducer based on lateral motion}, series = {Sensors and Actuators A: Physical}, volume = {Vol. 345}, journal = {Sensors and Actuators A: Physical}, issn = {1873-3069}, doi = {10.1016/j.sna.2022.113813}, abstract = {An alternative implementation of an electrostatic MUT (Micromachined Ultrasonic Transducer), relying on multiple beams that displace along the chip's surface instead of a single membrane displacing perpendicular to it, is presented in this work. With this approach, a design requiring a low bias voltage (24 V) and occupying a small area (3.3×3.3 mm², 2D/λ≈0.77) was shown to generate a sound pressure level of 82 dB (re. 20 µPa-rms) at 40 kHz and a distance of 8.9 cm. The high level of damping allows this transducer to operate in a wide frequency range (35-63 kHz). The operation of this device as an ultrasonic receiver was also proven. An implementation of this transducer as a rangefinder requires a strong reduction in the noise level, particularly coming from radio-frequency interference, in order to increase its detection range.}, language = {en} } @misc{Jongmanns, author = {Jongmanns, Marcel}, title = {Implementation of a hand gesture recognition using ultrasound measurements on a NVIDIA Jetson platform with AI-based evaluation}, publisher = {Berlin}, address = {VDE Verlag}, isbn = {978-3-8007-6204-0}, pages = {S. 694}, language = {en} } @misc{SuawaFogouHalbingerJongmannsetal., author = {Suawa Fogou, Priscile and Halbinger, Anja and Jongmanns, Marcel and Reichenbach, Marc}, title = {Noise-Robust Machine Learning Models for Predictive Maintenance Applications}, series = {IEEE Sensors Journal}, volume = {23}, journal = {IEEE Sensors Journal}, number = {13}, issn = {1558-1748}, doi = {10.1109/JSEN.2023.3273458}, pages = {15081 -- 15092}, abstract = {Predictive maintenance of equipment requires a set of data collected through sensors, from which models will learn behaviors that will allow the automatic detection or prediction of these behaviors. The objective is to anticipate unexpected situations such as sudden equipment stoppages. Industries are noisy environments due to production lines that involve a series of components. As a result, the data will always be obstructed by noise. Noise-robust predictive maintenance models, which include ensemble and deep learning models with and without data fusion, are proposed to enhance the monitoring of industrial equipment. The work reported in this article is based on two components, a milling tool, and a motor, with sound, vibration, and ultrasound data collected in real experiments. Four main tasks were performed, namely the construction of the datasets, the training of the monitoring models without adding artificial noise to the data, the evaluation of the robustness of the previously trained models by injecting several levels of noise into the test data, and the optimization of the models by a proposed noisy training approach. The results show that the models maintain their performances at over 95\% accuracy despite adding noise in the test phase. These performances decrease by only 2\% at a considerable noise level of 15-dB signal-to-noise ratio (SNR). The noisy training method proved to be an optimal solution for improving the noise robustness and accuracy of convolutional deep learning models, whose performance regression of 2\% went from a noise level of 28 to 15 dB like the other models.}, language = {en} } @misc{SuawaFogouMeiselJongmannsetal., author = {Suawa Fogou, Priscile and Meisel, Tenia and Jongmanns, Marcel and H{\"u}bner, Michael and Reichenbach, Marc}, title = {Modeling and Fault Detection of Brushless Direct Current Motor by Deep Learning Sensor Data Fusion}, series = {Sensors}, volume = {22}, journal = {Sensors}, number = {9}, issn = {1424-8220}, doi = {10.3390/s22093516}, pages = {17}, language = {en} } @misc{AssafoLautschSuawaetal., author = {Assafo, Maryam and Lautsch, Martin and Suawa, Priscile Fogou and Jongmanns, Marcel and H{\"u}bner, Michael and Reichenbach, Marc and Brockmann, Carsten and Reinhardt, Denis and Langend{\"o}rfer, Peter}, title = {The ForTune Toolbox: Building Solutions for Condition-Based and Predictive Maintenance Focusing on Retrofitting}, publisher = {VDE Verlag}, address = {Berlin}, isbn = {978-3-8007-6204-0}, pages = {S. 541}, language = {en} } @misc{MeyerSeeligGerstneretal., author = {Meyer, Antoine and Seelig, Torsten and Gerstner, Philipp and Kang, Changwoo and Meier, Martin and Jongmanns, Marcel and Baumann, Martin and Mutabazi, Innocent and Heuveline, Vincent and Egbers, Christoph}, title = {Thermo-electro-hydrodynamic instability of a dielectric fluid in a vertical cylindrical annulus: Earth's gravity and weightless conditions}, series = {LIA-ISTROF workshop 2019 Instabilities and Turbulence in Stratified Rotational Flows Cottbus, 19th-20th June 2019 Brandenburg}, journal = {LIA-ISTROF workshop 2019 Instabilities and Turbulence in Stratified Rotational Flows Cottbus, 19th-20th June 2019 Brandenburg}, address = {Cottbus}, pages = {1}, language = {en} } @phdthesis{Jongmanns, author = {Jongmanns, Marcel}, title = {Flow control of thermal convection using thermo electro hydrodynamic forces in a cylindrical annulus}, publisher = {Cuvillier Verlag}, address = {G{\"o}ttingen}, isbn = {978-3-7369-7044-1}, pages = {x, 160}, language = {en} } @misc{MeyerSeeligGerstneretal., author = {Meyer, Antoine and Seelig, Torsten and Gerstner, Philipp and Kang, Changwoo and Meier, Martin and Jongmanns, Marcel and Baumann, Martin and Mutabazi, Innocent and Heuveline, Vincent and Egbers, Christoph}, title = {Thermoelectric instability in a vertical cylindrical annulus}, series = {8th International Symposium on Bifurcations and Instabilities in Fluid Dynamics (BIFD), 16-19 July, 2019, University of Limerick, Ireland}, journal = {8th International Symposium on Bifurcations and Instabilities in Fluid Dynamics (BIFD), 16-19 July, 2019, University of Limerick, Ireland}, address = {Limerick}, pages = {1}, language = {en} } @misc{MeyerCrumeyrolleMutabazietal., author = {Meyer, Antoine and Crumeyrolle, Olivier and Mutabazi, Innocent and Meier, Martin and Jongmanns, Marcel and Renoult, Marie-Charlotte and Seelig, Torsten and Egbers, Christoph}, title = {Flow Patterns and Heat Transfer in a Cylindrical Annulus under 1g and low-g Conditions: Theory and Simulation}, series = {Microgravity Science and Technology}, volume = {30}, journal = {Microgravity Science and Technology}, number = {5}, issn = {0938-0108}, doi = {10.1007/s12217-018-9636-3}, pages = {653 -- 662}, language = {en} } @misc{MeierJongmannsMeyeretal., author = {Meier, Martin and Jongmanns, Marcel and Meyer, Antoine and Seelig, Torsten and Egbers, Christoph and Mutabazi, Innocent}, title = {Flow Pattern and Heat Transfer in a Cylindrical Annulus Under 1 g and Low-g Conditions: Experiments}, series = {Microgravity science and technology : international journal for microgravity research and applications}, volume = {30}, journal = {Microgravity science and technology : international journal for microgravity research and applications}, number = {5}, issn = {1875-0494}, doi = {10.1007/s12217-018-9649-y}, pages = {699 -- 712}, language = {en} } @misc{MeyerJongmannsMeieretal., author = {Meyer, Antoine and Jongmanns, Marcel and Meier, Martin and Egbers, Christoph and Mutabazi, Innocent}, title = {Thermal convection in a cylindrical annulus under a combined effect of the radial and vertical gravity}, series = {Comptes Rendus M{\´e}canique}, volume = {345}, journal = {Comptes Rendus M{\´e}canique}, number = {1}, issn = {1631-0721}, pages = {11 -- 20}, language = {en} }