Additively manufactured composite lattices: A state-of-the-art review on fabrications, architectures, constituent materials, mechanical properties, and future directions

Aghajani, Sepideh; Wu, Chi; Li, Qing; Fang, Jianguang

doi:10.1016/j.tws.2023.111539

Cited by 19 publications

(2 citation statements)

References 284 publications

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“…Presently, the simultaneous improvement in multiple mechanical properties in lattice structures composed of a single material poses a significant challenge [16,17]. Consequently, 2 of 16 there is a growing focus among scholars on composing lattices using diverse materials and reinforcement strategies, offering advantages such as enhanced strength and energy absorption [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Characterization of Multifunctional Metal-Coated Polymer Lattice Structures

Wang,

He,

Liu

et al. 2024

Materials

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Metal-coated lattice structures hold significant promise for customizing mechanical properties in diverse industrial applications, including the mechanical arms of unmanned aerial vehicles. However, their intricate geometries pose computational challenges, resulting in time-intensive and costly numerical evaluations. This study introduces a parameterization-based multiscale method to analyze body-centered cubic lattice structures with metal coatings. We establish the validity and precision of our proposed method with a comparative analysis of numerical results at the Representative Volume Element (RVE) scale and experimental findings, specifically addressing both elastic tensile and bending stiffness. Furthermore, we showcase the method’s accuracy in interpreting the bending stiffness of coated lattice structures using a homogenized material-based solid model, underscoring its effectiveness in predicting the elastic properties of such structures. In exploring the mechanical characterization of coated lattice structures, we unveil positive correlations between elastic tensile stiffness and both coating thickness and strut diameter. Additionally, the metal coating significantly enhances the structural elastic bending stiffness multiple times over. The diverse failure patterns observed in coated lattices under tensile and bending loads primarily stem from varied loading-induced stress states rather than external factors. This work not only mitigates computational challenges but also successfully bridges the gap between mesoscale RVE mechanical properties and those at the global structural scale.

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Section: Introductionmentioning

confidence: 99%

Mechanical Characterization of Multifunctional Metal-Coated Polymer Lattice Structures

Wang,

He,

Liu

et al. 2024

Materials

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“…Auxetic honeycomb sandwich panels are fabricated from Ti-6Al-4V alloy via the selective laser melting method. The article [34] reviews current studies on additively manufactured composite lattices.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of auxetic honeycombs realized via material extrusion additive manufacturing: Experimental testing and numerical studies

Uspensky,

Derevianko,

Avramov

et al. 2024

Preprint

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Combination of experimental testing and numerical analysis is suggested to determine static mechanical properties of the auxetic honeycombs realized via material extrusion. Special specimens, which consist of two honeycombs plates and three steel plates, are used to analyze experimentally shear mechanical properties of honeycombs. Shear testing is simulated using the finite elements software ANSYS. The tests on tension of honeycombs are carried out. These tests are simulated by finite elements software. Plasticity of the honeycomb material and geometrically nonlinear deformations of the honeycomb walls are accounted in honeycomb model. The experimental data and calculations results are close.

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Mechanical characterization and puncture resistance of 3D‐printed PLA lattice structures

Mani,

Murugaiyan,

Shanmugam

2024

Polymer Engineering & Sci

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The increasing application of additively manufactured (AM) materials in engineering and biomedical fields highlights the necessity of understanding their mechanical behavior, particularly with complex lattice structures. Polylactic acid (PLA), a popular biopolymer in additive manufacturing, exhibits mechanical characteristics highly dependent on its structural design. This research investigates the quasi‐static puncture failure analysis and mechanical characteristics of additively manufactured (AM) polylactic acid (PLA) materials with various lattice structures. The mechanical behavior, including tensile strength, flexural properties, interlaminar shear strength (ILSS), Izod impact resistance, and quasi‐static punch shear strength (QS‐PSS), was investigated following the respective ASTM protocols. Results indicate a 6% increase in tensile strength, to ca. 28 MPa, for the triangular PLA lattice structure compared with plain lattice structures. In the flexural test, the hexagonal structure showed a 13% increase in bending strength, to ca. 45 MPa, compared with the plain structure. Additionally, the hexagonal PLA lattice structure exhibited a 24% increase in shear strength, to approximately 8 MPa, over the plain lattice structure in the interlaminar shear strength analysis. In the Izod impact analysis, the plain lattice structure demonstrated a 17% increase in impact strength, to ca. 278 J/m, compared with the circular structure. A stainless‐steel hemispherical indenter was employed to investigate the quasi‐static punch shear behavior (QS‐PSS) of different lattice structures. The triangular structure displayed increased total energy absorption capacity and specific energy absorption of ca. 19 J and 0.529 J/g, respectively, compared with other lattice structures. These results are important for the creation of additively manufactured PLA lattice structures, improving the puncture resistance of advanced composites.Highlights Polylactic acid (PLA) lattice structures were fabricated. Plain, circular, triangular, and hexagonal lattice structures were investigated. Lattice structures were used as reinforcements. The triangular structure demonstrated improved strength. The triangular structure reduced crack formation and propagation.

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Additively manufactured composite lattices: A state-of-the-art review on fabrications, architectures, constituent materials, mechanical properties, and future directions

Cited by 19 publications

References 284 publications

Mechanical Characterization of Multifunctional Metal-Coated Polymer Lattice Structures

Mechanical Characterization of Multifunctional Metal-Coated Polymer Lattice Structures

Mechanical properties of auxetic honeycombs realized via material extrusion additive manufacturing: Experimental testing and numerical studies

Mechanical characterization and puncture resistance of 3D‐printed PLA lattice structures

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