Uncertainties and Reliability of Multiphysical Systems

IncertFia - ISSN 2514-569X - © ISTE Ltd

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Traditional cooling systems lack the ability to ensure efficient thermal energy transfer. The evolution of these systems has made it possible to improve new devices. This research demonstrates the effect of phase change materials (PCMs) on optimal thermal management using a heat sink. This type of material has the ability to absorb the thermal energy dissipated by electronic components. The material used is n-Eicosane, chosen for its physical and chemical properties. The finite element method is used to model this phenomenon, and the simulation results are obtained using ANSYS software. This article presents the results of a comparison between a heat sink without phase change materials (PCMs) and a heat sink with PCMs, in order to quantify the effect of the presence of PCMs on the thermal management of electronic components. N-Eicosane, whose melting point is 36.5°C. These heat sinks generally require the use of techniques to improve heat transfer, due to the low thermal conductivity of phase change materials (PCMs). An Aluminum plate fin array is used in this study to increase heat transfer. Therefore, the material used in this simulation decreases the overheating effect of the heat sink (maximum temperature without PCM: 69 °C - maximum temperature with PCM: 61 °C).

Additive Manufacturing (AM), also known as 3D printing, is revolutionizing the industrial sector by enabling the production of complex and customized components. The integration of Artificial Intelligence (AI) into AM processes holds significant promise for enhancing design optimization, process efficiency, and quality control. This article explores the convergence of AI and AM, focusing on innovation, trends, and applications such as topology optimization, performance prediction, real-time monitoring, and automated defect detection. We discuss the challenges associated with integrating AI into AM, including data availability, computational requirements, and the need for multidisciplinary expertise. This review aims to provide valuable insights for researchers and industry professionals interested in leveraging AI to advance additive manufacturing technologies.

4th edition of the Moroccan Workshop on 3D Printing hosted by Hassan II University Library of Mohamed SEKKAT, Casablanca, 2024

The Moroccan Association of Additive Manufacturing and 3D Printing is an association dedicated among other things to the promotion of scientific research in the promising field of additive manufacturing and 3D printing in Morocco. The organization of workshops is one of the key strategies to achieve this goal.

This study investigates the effect of support infill angle and its density, transverse at 90°, inclined at 45°, axial direction at 0° and crossed filament by (0°/90°), (45°/-45°) and (0°/45°) on surface quality and mechanical properties using three different strategies. The surface roughness and flexural properties of the specimens are analysed and compared as well as the material waste and printing time. According to results of this study, the variations in the support infill angle resulted in diverse flexural strength and surface quality.

Over the last decade, there has been a large interest in the use of 3D printing to manufacture microfluidic devices, since it has the ability to circumvent traditional fabrication techniques limitations. These include being unable to really make complex three-dimensional architectures, expensive and time-consuming processes to change device designs, and difficulty transitioning from prototyping to mass production. In this literature review, we will look at the current trends in 3D printed microfluidics, as well as recent advances and new developments in fabrication techniques, materials, and applications. Integration of 3D printing in microfluidics research has helped in the rapid prototyping of fluidic channels and structures with high complexity at an effective cost. Applications of 3D printed microfluidics are described in the areas of healthcare, diagnostics, chemical synthesis, and biotechnology. This paper also delineates the challenges and future prospects of 3D printed microfluidics, giving insight into potential research directions and technological developments.

Particularly focusing on 4D printing, a technology enabling objects to transform over time. We explore smart materials, emphasizing moisture-responsive variants crucial for 4D printing. Notably, cellulose emerges as key, offering renewable and sustainable bio-based filaments. We detail the meticulous preparation of cellulose from sugarcane bagasse, obtaining high-purity fibers essential for 4D printing. These filaments exhibit versatile stiffness and moisture responsiveness, crucial for hygromorphic structures. Our proposed method integrates a codesign approach tailored for 4D printing, utilizing fused filament fabrication and cellulose-filled filaments. Through this investigation, we uncover cellulose’s potential in sensor technology and additive manufacturing, marking significant progress in responsive materials and 4D printing.