Corrigendum to “Compressive properties of functionally graded lattice structures manufactured by selective laser melting” (Mater. Des. 131 (2017) 112–120)

Choy, Sing Ying; Sun, Chen-Nan; Leong, Kah Fai; Wei, Jun

doi:10.1016/j.matdes.2017.12.013

Cited by 22 publications

(29 citation statements)

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“…The energy absorption capability of progressively failing glassy carbon nanospinodals substantially exceeds that of any other 3D architected material (Figure d). We measure 3–20 times increased specific energy absorption compared to the most advanced nanolattices, as well as larger‐scale beam‐, and shell‐based architected materials . Compared to metal foams, our nanospinodals show up to an order of magnitude increase in energy absorption capability .…”

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confidence: 97%

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Ultrahigh Energy Absorption Multifunctional Spinodal Nanoarchitectures

Izard

Bauer

Crook

et al. 2019

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Nanolattices are promoted as next‐generation multifunctional high‐performance materials, but their mechanical response is limited to extreme strength yet brittleness, or extreme deformability but low strength and stiffness. Ideal impact protection systems require high‐stress plateaus over long deformation ranges to maximize energy absorption. Here, glassy carbon nanospinodals, i.e., nanoarchitectures with spinodal shell topology, combining ultrahigh energy absorption and exceptional strength and stiffness at low weight are presented. Noncatastrophic deformation up to 80% strain, and energy absorption up to one order of magnitude higher than for other nano‐, micro‐, macro‐architectures and solids, and state‐of‐the‐art impact protection structures are shown. At the same time, the strength and stiffness are on par with the most advanced yet brittle nanolattices, demonstrating true multifunctionality. Finite element simulations show that optimized shell thickness‐to‐curvature‐radius ratios suppress catastrophic failure by impeding propagation of dangerously oriented cracks. In contrast to most micro‐ and nano‐architected materials, spinodal architectures may be easily manufacturable on an industrial scale, and may become the next generation of superior cellular materials for structural applications.

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confidence: 97%

“…c) Energy absorption versus relative density. d) Comparison of the energy absorption with metallic foams, nanolattices, large‐scale beam‐, and shell‐based lattices …”

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confidence: 99%

Ultrahigh Energy Absorption Multifunctional Spinodal Nanoarchitectures

Izard

Bauer

Crook

et al. 2019

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“…Ashby map of energy absorption per unit volume versus density. This chart compares auxetic metamaterials against other most advanced metallic and composite structures so far (Note: the summary of material data sources is provided in the Supporting Information) …”

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confidence: 99%

3D‐Printed Mechanical Metamaterials with High Energy Absorption

Yuan

Chua

Zhou

2018

Adv Materials Technologies

237

105

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Metamaterials [1,[2][3][4] are rational artificial materials with unique structural designs to manipulate and control light, [5] sound, [6,7] mechanical stress, [8,9] etc., leading to previously inacces sible properties in photonic, [10] acoustic, [6] mechanical, [11,12] and many other physical aspects. 3D auxetic materials with highly ordered packing are first observed in the deformation of metallic crystal. [13] To date, the 3D metamaterials facilitate the combinations of mechanical properties that are in prin ciple antagonistic, such as ultrahigh stiffness, high damping capability, or negative Poisson's ratio. [14][15][16] These properties are derived both from the geometrical arrangement of those

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“…By optimization of process parameters, near‐fully dense components with relative density of ≈99.5% can be fabricated by SLM . Lightweight components with complex structures and excellent mechanical properties have been successfully built by SLM technology, and increasing amount of studies have been recently devoted to investigate the mechanical properties of SLM‐processed lightweight structures . Zhang et al fabricated three types of porous structures including cubic, topology optimization and rhombic dodecahedron, and investigated the energy absorption mechanism and stress distribution of porous structures at the initial stage of deformation through experiments and finite element simulations.…”

Section: Introductionmentioning

confidence: 99%

“…Qiu et al studied the effects of laser power and scanning speed on the surface morphology, internal pore, and mechanical property of SLM‐processed cellular lattice structures. Sun et alalso investigated the mechanical property of functionally graded lattice structures fabricated by SLM, demonstrating that samples with graded density had a higher plateau stress and specific energy absorption than those of samples with uniform density.…”

Section: Introductionmentioning

confidence: 99%

Compressive Properties of Bio‐Inspired Reticulated Shell Structures Processed by Selective Laser Melting

Wang

Lin

et al. 2019

Adv Eng Mater

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Owing to reasonable stress, large rigidity and large span, the reticulated shell structure is widely used in the field of aerospace industry. However, its hardto-process nature hinders, the progress of design optimization, and experimental investigation. In this paper, a series of reticulated shell structure, inspired from the diving bell of the water spiders, is designed and fabricated by selective laser melting (SLM) additive manufacturing technology from AlSi10Mg powder. The effects of strut diameter on dimensional accuracy, densification behavior, and mechanical properties of SLM-processed reticulated shell structures are investigated. The results show that all the SLMprocessed reticulated shell structures exhibit high relative density (>99%), which decrease with the increase of strut diameter. The load-displacement curves of all reticulated shell structures exhibit a similar trend including three distinct stages. The structure with strut diameter of 1.25 mm (D 1.25 ) has relatively high specific energy absorption, and energy absorption capability. The fracture mechanism of SLM-processed reticulated shell structures with different strut diameters is analyzed through a combination of finite element simulations and experimental observations. With an increasing strut diameter, the dominant mechanism changes from stress-controlled to porositycontrolled fracture.

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Corrigendum to “Compressive properties of functionally graded lattice structures manufactured by selective laser melting” (Mater. Des. 131 (2017) 112–120)

Cited by 22 publications

References 0 publications

Ultrahigh Energy Absorption Multifunctional Spinodal Nanoarchitectures

Ultrahigh Energy Absorption Multifunctional Spinodal Nanoarchitectures

3D‐Printed Mechanical Metamaterials with High Energy Absorption

Compressive Properties of Bio‐Inspired Reticulated Shell Structures Processed by Selective Laser Melting

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