Effect of atomic tessellations on structural and functional properties of additive manufactured lattice structures

Bhat, Chinmai; Kumar, Ajeet; Jeng, Jeng-Ywan

doi:10.1016/j.addma.2021.102326

Cited by 12 publications

(8 citation statements)

References 45 publications

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“…Tis can lead to reduced structural integrity and compromised performance of the fnal product. Te mismatch in material properties, such as coefcients of thermal expansion and mechanical behaviors, can result in stress concentrations at the material interfaces, leading to delamination [16,17]. Compatibility issues arise when materials used in a multimaterial AM process have diferent processing requirements.…”

Section: Introductionmentioning

confidence: 99%

“…For example, materials may have diferent melting temperatures or cooling rates, making it difcult to fnd optimal process parameters that satisfy the requirements of all materials simultaneously. Tis can lead to defects, such as voids, porosity, or inconsistent material properties, further impacting the performance of the component [16,17].…”

Section: Introductionmentioning

confidence: 99%

“…Researchers have also proposed various nesting strategies to overcome the challenges associated with multimaterial AM [16]. Nesting refers to the arrangement of diferent materials within a build volume to optimize the material usage and minimize interface delamination.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, nesting strategies further optimize the placement of materials, thereby reducing interface delamination and improving compatibility. Tese advancements have the potential to revolutionize the aerospace industry by enabling the production of complex, high-performance components [14,16,17].…”

Section: Introductionmentioning

confidence: 99%

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The Current State of the Art and Advancements, Challenges, and Future of Additive Manufacturing in Aerospace Applications

Getachew,

Shiferaw,

Ayele

2023

Advances in Materials Science and Engineering

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Additive manufacturing has revolutionized the manufacturing industry, particularly in aerospace. This paper provides an overview of the advancements, state-of-the-art, challenges, and future of additive manufacturing in the aerospace industry. It begins by discussing the workflow of additive manufacturing and the comparison of software required for modeling and slicing the designed models. Various types of additive manufacturing processes used in the aerospace industry with their postprocessing challenges and solutions are also presented in detail. Besides, the challenges and limitations that come with the use of additive manufacturing in aerospace are also outlined. The paper investigated that the use of additive manufacturing in aerospace has given several advantages such as the ability to produce complex geometries, reduce material waste, and improve design flexibility. The future of additive manufacturing in aerospace looks promising, with the potential for even more cost-effective and efficient production. The paper concludes that additive manufacturing has proven to be a game-changer in aerospace presenting different advanced aerospace components in detail, with continued research and development shaping the future of manufacturing and production. With advancements in technology and processes, additive manufacturing for aerospace can overcome the challenges and become a reliable and cost-effective alternative to traditional manufacturing methods.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Current State of the Art and Advancements, Challenges, and Future of Additive Manufacturing in Aerospace Applications

Getachew,

Shiferaw,

Ayele

2023

Advances in Materials Science and Engineering

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“…Bhat et al demonstrated the effect of tessellation on the mechanical and functional property, while the morphology of the unit lattice structure was the same [ 7 ]. The cellular structure based on topological space can be classified as two-dimensional (2D) or 3-dimensional (3D).…”

Section: Introductionmentioning

confidence: 99%

Energy Absorption and Stiffness of Thin and Thick-Walled Closed-Cell 3D-Printed Structures Fabricated from a Hyperelastic Soft Polymer

et al. 2022

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This study analyses the energy absorption and stiffness behaviour of 3D-printed supportless, closed-cell lattice structures. The unit cell design is bioinspired by the sea urchin morphology having organism-level biomimicry. This gives rise to an open-cell lattice structure that can be used to produce two different closed-cell structures by closing the openings with thin or thick walls, respectively. In the design phase, the focus is placed on obtaining the same relative density with all structures. The present study demonstrates that closure of the open-cell lattice structure enhances the mechanical properties without affecting the functional requirements. Thermoplastic polyurethane (TPU) is used to produce the structures via additive manufacturing (AM) using fused filament fabrication (FFF). Uniaxial compression tests are performed to understand the mechanical and functional properties of the structures. Numerical models are developed adopting an advanced material model aimed at studying the hysteretic behaviour of the hyperelastic polymer. The study strengthens design principles for closed-cell lattice structures, highlighting the fact that a thin membrane is the best morphology to enhance structural properties. The results of this study can be generalised and easily applied to applications where functional requirements are of key importance, such as in the production of lightweight midsole shoes.

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Ventilated surface-based lattice structures designed for polymer powder bed fusion process

Verma,

Kumar,

Jeng

2024

Int J Adv Manuf Technol

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This work addresses the issues of entrapment of polymer powder and the post-processing powder removal challenges in surface-based lattice structures 3D printed with powder-bed based additive manufacturing (AM) technology. A ventilation design approach has been proposed to enhance the powder removability from the widely researched three-dimensional gyroid and two-dimensional honeycomb lattice structure. The ow characteristics and mechanical behaviour of the designed lattices were analysed using computational uid dynamics (CFD) and nite element analysis (FEA), respectively, followed by experimental powder ow and compression testing. HP jet fusion 4200® industrial 3D printer was used for printing the lattice structures for experimental validation. The results showed a 65-85% improvement in powder owability, with a minimum to severe reduction in mechanical strength of different lattice structures. The study can be applied to designing products with multi-functional properties with surface-based lattice structures by employing the principle of design for additive manufacturing and post-processing (DfAM&PP).

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Effect of atomic tessellations on structural and functional properties of additive manufactured lattice structures

Cited by 12 publications

References 45 publications

The Current State of the Art and Advancements, Challenges, and Future of Additive Manufacturing in Aerospace Applications

The Current State of the Art and Advancements, Challenges, and Future of Additive Manufacturing in Aerospace Applications

Energy Absorption and Stiffness of Thin and Thick-Walled Closed-Cell 3D-Printed Structures Fabricated from a Hyperelastic Soft Polymer

Ventilated surface-based lattice structures designed for polymer powder bed fusion process

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