Mechanical properties of 3D printed polymeric cellular materials with triply periodic minimal surface architectures

Abueidda, Diab W.; Bakır, Mete; Al‐Rub, Rashid K. Abu; Bergström, Jörgen; Sobh, Nahil; Jasiuk, Iwona

doi:10.1016/j.matdes.2017.03.018

Cited by 294 publications

(132 citation statements)

References 53 publications

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“…Although they have been discovered for a long time, their realization as a three‐dimensional structure was not an easy task due to their structural complexity. However, recent advances in fabrication techniques facilitated this task and many recent studies have successfully fabricated and tested these topologies in different engineering disciplines such as water treatment, lightweight materials, and composites . A minimal surface can be converted into a cellular material with a defined volume using two main approaches as explained by Kapfer et al and shown in Figure B.…”

Section: Introductionmentioning

confidence: 99%

“…However, recent advances in fabrication techniques facilitated this task and many recent studies have successfully fabricated and tested these topologies in different engineering disciplines such as water treatment, 9,10,16 lightweight materials, [19][20][21][22][23] and composites. [24][25][26][27] A minimal surface can be converted into a cellular material with a defined volume using two main approaches as explained by Kapfer et al 28 and shown in Figure 2B. In this paper, we introduce TPMS-based structures as a new and novel approach to architect the topology of catalytic support.…”

Section: Introductionmentioning

confidence: 99%

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Additive manufacturing of architected catalytic ceramic substrates based on triply periodic minimal surfaces

et al. 2019

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The exhibited geometry of catalytic substrates can have a significant influence on the chemical activity and efficiency. Controlling their geometry can be challenging using the traditional techniques. In this work, we propose new and novel catalytic substrates with architected and controllable topologies based on the minimal surfaces framework. A novel design approach and an additive manufacturing (AM) technique were proposed to manufacture the catalytic substrates using ceramic materials. After 3D printing, their mechanical and flow properties were investigated experimentally. An elastic‐plastic‐damage coupled model was employed to investigate the underlying deformation mechanism of the investigated substrates. Results showed that the CLP substrate exhibited the highest mechanical properties as well as the least pressure drop among the tested substrates. Also, numerical simulations showed that the strut‐based substrates exhibit stress localization which leads to faster failure, while stress is distributed more homogeneously in the sheet‐based substrates. While the model showed to have a good agreement in the experimental and simulation stress‐strain responses, the damage mechanism was not fully captured by the numerical simulations. This was attributed mainly to the process‐induced defects in the form of microcracks and microvoids that can alter the nature of deformation and damage.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Additive manufacturing of architected catalytic ceramic substrates based on triply periodic minimal surfaces

et al. 2019

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“…[3,4,5,6,7]), triply periodic minimal surfaces (e.g. [8,9]), free-form microstructures [10], microstructures for expressive deformation (e.g. [11,12,13]), bone-like microstructures (e.g.…”

Section: Structures With Graded Propertiesmentioning

confidence: 99%

CrossFill: Foam Structures with Graded Density for Continuous Material Extrusion

Kuipers

Wang

2019

Computer-Aided Design

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The fabrication flexibility of 3D printing has sparked a lot of interest in designing structures with spatially graded material properties. In this paper, we propose a new type of density graded structure that is particularly designed for 3D printing systems based on filament extrusion. In order to ensure high-quality fabrication results, extrusion-based 3D printing requires not only that the structures are self-supporting, but also that extrusion toolpaths are continuous and free of self-overlap. The structure proposed in this paper, called CrossFill, complies with these requirements. In particular, CrossFill is a self-supporting foam structure, for which each layer is fabricated by a single, continuous and overlap-free path of material extrusion. Our method for generating CrossFill is based on a space-filling surface that employs spatially varying subdivision levels. Dithering of the subdivision levels is performed to accurately reproduce a prescribed density distribution. We demonstrate the effectiveness of CrossFill on a number of experimental tests and applications.

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“…The triply periodic minimal surfaces (TPMS) are interesting geometries in the design of scaffolds since the use of 3D printing became popular [12]. The TPMS have been studied by differential geometry for more than 250 years.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of ceramic structures based on Triply Periodic Minimal Surface (TPMS) processed by 3D printing

Restrepo

Ocampo

Ramírez

et al. 2017

J. Phys.: Conf. Ser.

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Abstract. Repairing tissues and organs has been the main goal of surgical procedures. Since the 1990s, the main goal of tissue engineering has been reparation, using porous scaffolds that serve as a three-dimensional template for the initial fixation of cells and subsequent tissue formation both in vitro and in vivo. A scaffold must have specific characteristics of porosity, interconnectivity, surface area, pore volume, surface tortuosity, permeability and mechanical properties, which makes its design, manufacturing and characterization a complex process. Inspired by nature, triply periodic minimal surfaces (TPMS) have emerged as an alternative for the manufacture of porous pieces with design requirements, such as scaffolds for tissue repair. In the present work, we used the technique of 3D printing to obtain ceramic structures with Gyroid, Schwarz Primitive and Schwarz Diamond Surfaces shapes, three TPMS that fulfil the geometric requirements of a bone tissue scaffold. The main objective of this work is to compare the mechanical properties of ceramic pieces of three different forms of TPMS printed in 3D using a commercial ceramic paste. In this way it will be possible to clarify which is the TPMS with appropriate characteristics to construct scaffolds of ceramic materials for bone repair. A dependence of the mechanical properties with the geometry was found being the Primitive Surface which shows the highest mechanical properties.

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Mechanical properties of 3D printed polymeric cellular materials with triply periodic minimal surface architectures

Cited by 294 publications

References 53 publications

Additive manufacturing of architected catalytic ceramic substrates based on triply periodic minimal surfaces

Additive manufacturing of architected catalytic ceramic substrates based on triply periodic minimal surfaces

CrossFill: Foam Structures with Graded Density for Continuous Material Extrusion

Mechanical properties of ceramic structures based on Triply Periodic Minimal Surface (TPMS) processed by 3D printing

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