Localized strain fields in honeycomb materials with convex and concaved cells

Alkhader, Maen; Abuzaid, Wael; Elyoussef, Mostafa; Al-Adaileh, Sakher

doi:10.1016/j.euromechsol.2019.103890

Cited by 11 publications

(2 citation statements)

References 26 publications

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“…Additive manufacturing techniques have become ubiquitous in the engineering and industrial scenes. The growing dependence on them stems from their proven utility in fabricating components with very complex 3D geometries and from a wide range of materials [ 1 , 2 , 3 , 4 , 5 , 6 ]. Moreover, they eliminate the need for subtractive processes or molds, which allows them, particularly in nonmass production cases involving complex shapes, to deliver a simpler, faster, less expensive, and more sustainable manufacturing solution [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

A Low-Cost Process for Fabricating Reinforced 3D Printing Thermoplastic Filaments

et al. 2023

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Low-cost desktop-sized fused deposition modeling (FDM) printers have been widely embraced by small to large-scale institutions and individuals. To further enhance their utility and increase the range of materials that they can process, this work proposes a low-cost solution that adapts to low-cost desktop-sized extruders and enables them to fabricate filaments comprising a wide range of nonorganic reinforcing particles. This solution will fill a gap in the field, as low-cost fabrication techniques for reinforced filaments have been lacking. In the proposed solution, particles are heated and deposited on thermoplastic pellets to form a coating. Coated pellets are subsequently extruded using a low-cost desktop single-screw extruder. The effectiveness of the process is demonstrated by fabricating polylactic acid (PLA) filaments reinforced with two types of reinforcements, namely, dune sand and silicon carbide. Filaments’ stiffness and strength were measured, and their microstructure along their lateral and longitudinal directions were investigated. Improvements in tensile strength (up to 8%) and stiffness (up to 4.5%) were observed, but at low reinforcement levels (less than 2 wt%). Results showed that the proposed process could be used to fabricate filaments with multiple types of particles. The produced filaments were successfully used to fabricate 3D parts using a commercial desktop FDM printer.

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Section: Introductionmentioning

confidence: 99%

A Low-Cost Process for Fabricating Reinforced 3D Printing Thermoplastic Filaments

et al. 2023

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“…Increasing the plateau stress of a core enhances its structural properties. Typically, tailoring the properties of cellular cores, including their plateau stress, can be realized by controlling their relative density, topological features and constituent material [15][16][17][18] . The relative density is defined as the ratio of the density of the core to the density of its constituent material.…”

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Flexural response of sandwich structures comprising topologically perturbed cores

Osman,

Alkhader,

Abuzaid

2024

J. Phys.: Conf. Ser.

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Enhancing the flexural stiffness of sandwich structures comprising honeycomb cores through perturbing their cellular cores is explored computationally in this work. In-plane sinusoidal perturbations are imposed on the ligaments of hexagonal cores to increase their second moment of inertia and flexural load-carrying capacity. The sensitivity of sandwich structures’ flexural strength, peak load and specific energy absorption to the imposed perturbation is investigated. Introduced perturbations are controlled through their amplitude and frequency. Results show that increasing the perturbation frequency and amplitude generally increases the flexural stiffness and peak loads of sandwich structures with perturbed cores without compromising their lightweight properties. However, low frequencies and amplitudes had a negligible effect on the sandwich structures’ mechanical properties.

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Split Hopkinson Pressure Bar (SHPB) Test and Different Modeling Methods of Aluminum Honeycomb Materials

et al. 2022

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Localized strain fields in honeycomb materials with convex and concaved cells

Cited by 11 publications

References 26 publications

A Low-Cost Process for Fabricating Reinforced 3D Printing Thermoplastic Filaments

A Low-Cost Process for Fabricating Reinforced 3D Printing Thermoplastic Filaments

Flexural response of sandwich structures comprising topologically perturbed cores

Split Hopkinson Pressure Bar (SHPB) Test and Different Modeling Methods of Aluminum Honeycomb Materials

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