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Hany Hassanin

Bio: Hany Hassanin is an academic researcher from Canterbury Christ Church University. The author has contributed to research in topics: Soft lithography & Ceramic. The author has an hindex of 24, co-authored 68 publications receiving 1476 citations. Previous affiliations of Hany Hassanin include University of Birmingham & Helwan University.


Papers
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TL;DR: In this article, the as-fabricated strut size, morphology and internal porosity were investigated using optical microscopy, scanning electron microscopy (SEM) and X-ray microtomography (micro-CT) and correlated to the compressive properties of the structure.
Abstract: AlSi10Mg cellular lattice structures have been fabricated by selective laser melting (SLM) using a range of laser scanning speeds and powers. The as-fabricated strut size, morphology and internal porosity were investigated using optical microscopy (OM), scanning electron microscopy (SEM) and X-ray microtomography (micro-CT) and correlated to the compressive properties of the structure. Strut diameter was found to increase monotonically with laser power while the porosity was largest at intermediate powers. Laser scanning speed was found to thicken the struts only at slow rates while the porosity was largest at intermediate speeds. High speed imaging showed the melt pool to be larger at high laser powers. Further the melt pool shape was found to vary cyclically over time, steadily growing before becoming increasingly instable and irregularly shaped before abruptly falling in size due to splashing of molten materials and the process repeating. Upon compressive loading, lattice deformation was homogeneous prior to the peak stress before falling sharply due to the creation of a (one strut wide) shear band at around 45° to the compression axis. The specific yield strength expressed as the yield stress/(yield stress of the aluminium × relative density) is not independent of processing conditions, suggesting that further improvements in properties can be achieved by process optimisation. Lattice struts failed near nodes by a mixture of ductile and brittle fracture.

282 citations

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TL;DR: In this article, a Negative Poisson's Ratio (NPR) based Shape Memory Alloy (SMA) structure was used to construct reusable body armour, which showed stress-induced cracks and residual porosity, which could be minimized through process optimisation.

223 citations

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TL;DR: In this article, an extensive review of fused deposition modeling and its application in the development of high performance UAVs is presented, including the process methodology, materials, post processing, and properties of its products.
Abstract: Additive Manufacturing (AM) is a game changing production technology for aerospace applications. Fused deposition modeling is one of the most widely used AM technologies and recently has gained much attention in the advancement of many products. This paper introduces an extensive review of fused deposition modeling and its application in the development of high performance unmanned aerial vehicles. The process methodology, materials, post processing, and properties of its products are discussed in details. Successful examples of using this technology for making functional, lightweight, and high endurance unmanned aerial vehicles are also highlighted. In addition, major opportunities, limitations, and outlook of fused deposition modeling are also explored. The paper shows that the emerge of fused deposition modeling as a robust technique for unmanned aerial vehicles represents a good opportunity to produce compact, strong, lightweight structures, and functional parts with embedded electronic.

100 citations

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TL;DR: The potential to additively manufacture a titanium-based antibiotic eluting implant, which is an attractive alternative to current treatment strategies of periprosthetic infections, is demonstrated.

73 citations

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TL;DR: An extensive overview of AM technologies and their applications for drug delivery is provided including their working principles, processed materials, as well as current progress in drug delivery to produce personalized dosages for every patient with controlled release profile.

66 citations


Cited by
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[...]

08 Dec 2001-BMJ
TL;DR: There is, I think, something ethereal about i —the square root of minus one, which seems an odd beast at that time—an intruder hovering on the edge of reality.
Abstract: There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality. Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

33,785 citations

Journal ArticleDOI
TL;DR: Additive manufacturing (AM) is fundamentally different from traditional formative or subtractive manufacturing in that it is the closest to the bottom-up manufacturing where a structure can be built into its designed shape using a "layer-by-layer" approach rather than casting or forming by technologies such as forging or machining as discussed by the authors.

1,124 citations

Journal ArticleDOI
TL;DR: A comprehensive understanding of the interrelation between the various aspects of the subject, as this is essential to demonstrate credibility for industrial needs, is presented in this paper, which highlights some key topics requiring attention for further progression.

761 citations

Journal ArticleDOI
TL;DR: In this paper, the development of surface structure and porosity of Ti-6Al-4V samples fabricated by selective laser melting under different laser scanning speeds and powder layer thicknesses has been studied and correlated with the melt flow behavior through both experimental and modelling approaches.

689 citations