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    Review on properties, physics, and fabrication of two-dimensional material-based metal-matrix composites (2DMMCs) for heat transfer systems
    ( 2025) Lee, H. ; Lordejani, A.A. ; Goor, L. van ; Jurov, A. ; Koutsioukis, A. ; Ruan, S. ; Santhosh, N.M. ; Zarei, F. ; Barreneche, C. ; Cvelbar, U. ; Dosta, S. ; Geurts, B.J. ; Guagliano, M. ; Jafari, D. ; Nicolosi, V. ; Yin, S. ; Zavasnik, J. ; Bagherifard, S. ; Lupoi, R. ; Wits, W.W.
    In the exploration of new materials development, 2D materials have received much attention due to their outstanding properties in terms of e.g. strength, and electrical and thermal conductivities. Graphene and boron nitride, amongst other 2D materials, are renowned for their exceptional thermal conductivity. In this review, we examine the properties, physics, and fabrication techniques of 2D material-based metal-matrix composites (2DMMCs) with a specific focus on heat transfer systems. The on-going demand for better electronic cooling systems in combination with advancements in mass production techniques of 2D materials facilitates the application of 2DMMCs in heat transfer systems. However, currently, the thermal behaviour of 2DMMCs remains largely uncategorized, strengthening the timely context of this review. Next to recent research progress, material properties, production techniques and strategies for improving thermal conductivity of 2DMMCs are addressed in this work. Methods to reliably assess the thermal conductivity of 2D enhanced materials are discussed alongside the fabrication techniques for 2D-material feedstocks for 2DMMCs production. Also, current limitations in the heat transfer capabilities of 2DMMCs, alongside prospects for enhancing thermal properties through emerging technologies, such as additive manufacturing, are addressed.
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    Testing for slipperiness: Review of Flight Test Activities on Wet Runways using a Cessna Citation 550 and Dassault Falcon 2000
    ( 2024) Es, G.W.H. van ; Vries, V.J.F. de
    An overview is given of the flight test activities of the ongoing runway micro texture project conducted by Netherlands Aerospace Centre and its partners the German Aerospace Centre and Engineering Sciences Data Unit for the European Union Aviation Safety Agency. The test locations, flight test aircraft, test equipment, and flight test procedures are described. The postprocessing of the data collected during the flight test with Cessna Citation C550 and the Dassault Falcon 2000 on wet runways is discussed in some detail. Some preliminary results in terms of braking friction levels as function of ground speed are presented for several test locations. Results from testing the two test aircraft on wet runway at several airports are reviewed.
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    Design of Delivery Drone and the Interaction : A Public User Perspective
    (ACM, 2024) Lingam, S.N. ; Verstegen, R. ; Petermeijer, S.M. ; Martens, M.
    Drones will likely enter public spaces soon for deliveries, interacting with humans as recipients or bystanders. Understanding their requirements and factors contributing to uncertainty is crucial for safer Human-Drone Interaction design. Twelve participants were interviewed and engaged in focus groups. Preliminary results indicate the need for clear communication of drone intentions through design and interfaces, guiding future research and design concepts to be tested with user studies for delivery drones in public spaces.
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    Aircraft Level Thermal Management Analysis for Early Design Stages of Future Aircraft: Integration of Systems and Compartments into an Interacting Generic Approach
    (MDPI, 2025) Muijden, J. van ; Aalbers, V.J.E.
    For future commercial aircraft having hybrid electric drivetrains, the impact of electrical power generation and distribution on heat production and required heat rejection is of a larger magnitude than for conventional aircraft. The thermal management system (TMS) to control component and compartment temperatures may require dedicated solutions. The impact of TMS on top-level aircraft requirements (TLARs), e.g., weight and drag penalties, should become clear in the early stages of design for integration in the configuration. To assess this impact, a generic approach is presented to support aircraft level thermal management analysis and design based on global aircraft parameters.
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    Fatigue prediction and life assessment method for metal laser powder bed fusion parts
    (Elsevier, 2023) Wits, W.W. ; Amsterdam, E.
    In this paper, an industry-accepted fatigue model based on generalized stress-life (S-N) curves is adapted for metal parts fabricated by Laser Powder Bed Fusion (LPBF). Initial defects inherent to the fabrication process, such as part porosity, are related to fatigue life performance. Hereto, additively manufactured test specimens are fatigue tested and used to formulate a function to predict fatigue life based on the size of initial defects. The predictions correlate well with experimental results and provide a quality measure to expel outliers. The method can be used to predict the life expectancy of LPBF parts based on a priori detected defect sizes.