Increasing fracture toughness via architected porosity

Conway, Kaitlynn M.; Kunka, Cody; White, Benjamin; Pataky, Garrett J.; Boyce, Brad Lee

doi:10.1016/j.matdes.2021.109696

Cited by 35 publications

(13 citation statements)

References 40 publications

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“…Compared with the octahedron unit, superior fatigue resistance can be acquired by TPMS due to the smooth surfaces without nodal points. In addition, the fracture toughness of TPMS has also been studied in recent research [115,116]. Interestingly, the bandgaps can be acquired by G structures [41].…”

Section: Mechanical Performancesmentioning

confidence: 99%

Triply periodic minimal surface (TPMS) porous structures: from multi-scale design, precise additive manufacturing to multidisciplinary applications

Feng

Yao

et al. 2022

Int. J. Extrem. Manuf.

216

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Inspired by natural porous architectures, numerous attempts have been made to generate porous structures. Owing to the smooth surfaces, highly interconnected porous architectures, and mathematical controllable geometry features, triply periodic minimal surface (TPMS) is emerging as an outstanding solution to constructing porous structures in recent years. However, many advantages of TPMS are not fully utilized in current research. Critical problems of the process from design, manufacturing to applications need further systematic and integrated discussions. In this work, a comprehensive overview of TPMS porous structures is provided. In order to generate the digital models of TPMS, the geometry design algorithms and performance control strategies are introduced according to diverse requirements. Based on that, precise additive manufacturing methods are summarized for fabricating physical TPMS products. Furthermore, actual multidisciplinary applications are presented to clarify the advantages and further potential of TPMS porous structures. Eventually, the existing problems and further research outlooks are discussed.

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Section: Mechanical Performancesmentioning

confidence: 99%

Triply periodic minimal surface (TPMS) porous structures: from multi-scale design, precise additive manufacturing to multidisciplinary applications

Feng

Yao

et al. 2022

Int. J. Extrem. Manuf.

216

View full text Add to dashboard Cite

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“…There are systems that do possess properties that are dependent on the direction and also on the propagation pathways, but they rely on the presence of interfacial effects Daniel et al [2004], Malvadkar et al [2010], Hancock et al [2012, Zambrano et al [2018], Xia et al [2012]. Recent works have demonstrated rectification effects and deflection of fractures by modifying only the microstructure with the creation of structural voids Hossain et al [2014], Brodnik et al [2021, Conway et al [2021] without any introduction of a different material. These strategies serve as a way to mitigate the damage of critical components when a fracture is unavoidable Brodnik et al [2021].…”

Section: Introductionmentioning

confidence: 99%

'Guided' Fractures in Graphene Mechanical Diode-like Structures

Felix,

Galvao

2022

Preprint

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The concept of diode is usually applied to electronic and thermal devices but very rarely for mechanical ones. A recent proposed fracture rectification effect in polymer-based structures with triangular voids defects has motivated us to test these ideas at the nanoscale using graphene membranes. Using fully-atomistic reactive molecular dynamics simulations we showed that a robust rectification-like effects exists. The fracture can be 'guided' to easier propagate along one specific direction than its opposite. We also observed that there is an optimal value for the spacing between each void for rectification effect.

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“…Some systems do possess properties that are dependent on the direction and also on the propagation pathways, but they rely on the presence of interfacial effects. [22][23][24][25][26] Recent works have demonstrated rectification effects and deflection of fractures by modifying only the microstructure with the creation of structural voids [27][28][29] without any introduction of a different material. These strategies serve as a way to mitigate the damage of critical components when a fracture is unavoidable.…”

Section: Introductionmentioning

confidence: 99%