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

INTERNATIONAL JOURNAL OF EXTREME MANUFACTURING (2022)

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Article Computer Science, Software Engineering

Efficient Representation and Optimization for TPMS-Based Porous Structures

Jiangbei Hu et al.

Summary: This study presents an efficient approach for optimizing porous shell structures based on triply periodic minimal surfaces (TPMS) using functions. The method allows for smooth changes in geometry and topology of the porous shell, ultimately improving controllability and efficiency. By directly optimizing the topology and geometry of TPMS-based structures, the proposed porous shell structures demonstrate clear advantages in terms of efficiency and effectiveness compared to traditional heuristic methods.

IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS (2022)

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Article Thermodynamics

Forced Convection Computational Fluid Dynamics Analysis of Architected and Three-Dimensional Printable Heat Sinks Based on Triply Periodic Minimal Surfaces

Oraib Al-Ketan et al.

Summary: The study introduced a mathematical approach for designing heat sinks and investigated their performance using computational fluid dynamics. Results showed that under certain flow conditions, specific topological heat sinks can achieve higher heat transfer coefficients at the expense of increased pressure drops. Employing functional grading in the design can help balance heat transfer performance and pressure drop in heat sink designs.

JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS (2021)

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Article Materials Science, Multidisciplinary

Mechanical behavior and deformation mechanism of triply periodic minimal surface sheet under compressive loading

Zhonggang Wang et al.

Summary: The impact behavior and deformation mechanism of TPMS sheets were numerically investigated, showing that they exhibit excellent mechanical properties due to their isotropic smooth surface transitions and open-cell connectivity.

MECHANICS OF ADVANCED MATERIALS AND STRUCTURES (2021)

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Article Materials Science, Ceramics

3D printing of TPMS structural ZnO ceramics with good mechanical properties

Jiaxiong Lu et al.

Summary: In this study, ZnO ceramics with two types of TPMS structure were fabricated by 3D printing, showing high densification and controllable shape. The Gyroid structural ZnO ceramics exhibited higher compressive strength and deformation tolerance compared to the Schwartz P structure, indicating potential application in sensing and detection in the future.

CERAMICS INTERNATIONAL (2021)

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Article Mechanics

Design optimization of a novel bio-inspired 3D porous structure for crashworthiness

Hanfeng Yin et al.

Summary: A novel hierarchical three-dimensional porous (H3DP) structure inspired by bone in nature was created and showed excellent energy absorption capacity. Numerical simulation and experimental validation revealed that the crashworthiness of the H3DP structure is influenced by design parameters, and multi-objective optimization was conducted to obtain the optimal design.

COMPOSITE STRUCTURES (2021)

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Article Mechanics

Free vibration and buckling characteristics of functionally graded beams with triply periodic minimal surface architecture

N. V. Viet et al.

Summary: This work presents models for studying the free vibration and buckling characteristics of functionally graded porous beams, taking into account the effect of neutral axis dislocation. The effective stiffness in the form of three-degree polynomials is proposed and the condition of gradient index is derived to make the study practical. 3D FEM simulations validate the models and show that factors such as gradient index, beam dimension, and material types significantly affect the beam's vibrational and buckling behaviors.

COMPOSITE STRUCTURES (2021)

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Article Mechanics

Mechanical performance and defect analysis of the imperfect micro smooth gyroid cylinder shell structure

Xiaofei Cao et al.

Summary: In this study, the impact of defects originated from the P mu SL process on the compressive mechanical properties and deformation modes of micro gyroid cylinder shell structures were examined through experimental tests and numerical simulations. Testing results showed that the fabricated thickness value significantly affected the mechanical properties of the structures. A reconstructed 3D true model based on 2D tomography images was proposed, with simulation results indicating better consistency with experimental results compared to an ideal model.

COMPOSITE STRUCTURES (2021)

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Article Thermodynamics

Computation of the conducto-radiative effective heat conductivity of porous media defined by Triply Periodic Minimal Surfaces

Gerard L. Vignoles et al.

Summary: This study presents image-based computations of effective thermal conductivities for different radiation/conduction ratios in Triply Periodic Minimal Surfaces structures. The results show that the critical ratio is linearly proportional to the solid/void volume ratio of the media, highlighting the relationship between ETC and density, conduction ratio, and radiation ratio.

INTERNATIONAL JOURNAL OF THERMAL SCIENCES (2021)

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Article Computer Science, Interdisciplinary Applications

Design optimization of interconnected porous structures using extended triply periodic minimal surfaces

Ming Li et al.

Summary: This study proposes a method to design an optimized heterogeneous interconnected porous structure using the concept of ETPMS. By introducing control parameters and addressing challenges related to simulation and optimization, a porous structure with perfect geometric connections and interconnected pore networks can be achieved. The performance of the approach is demonstrated through three-dimensional benchmark examples.

JOURNAL OF COMPUTATIONAL PHYSICS (2021)

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Article Engineering, Biomedical

Effect of unit configurations and parameters on the properties of Ti-6Al-4V unit-stacked scaffolds: A trade-off between mechanical and permeable performance

Zhitong Li et al.

Summary: This paper investigates the influence of unit configuration and parameters on the performance of scaffolds in tissue engineering, using triply periodic minimal surfaces (TPMS) as the basic unit. Both simulation and experimental results demonstrate the significant impact of unit configuration and parameters on the mechanical and permeable properties of TPMS units. The findings provide insights for regulating unit configurations and parameters to achieve optimal solutions in tissue engineering applications.

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS (2021)

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Article Thermodynamics

Flow and thermal transport characteristics of Triply-Periodic Minimal Surface (TPMS)-based gyroid and Schwarz-P cellular materials

Inderjot Kaur et al.

Summary: Investigated convective heat transport in sheet-based TPMS topologies, gyroid outperformed other two topologies, indicating its superiority as a candidate in conjugate thermal transport applications.

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS (2021)

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Article Metallurgy & Metallurgical Engineering

Energy Absorption and Deformation Behavior of 3D Printed Triply Periodic Minimal Surface Stainless Steel Cellular Structures under Compression

Yingjing Liang et al.

Summary: The study finds that the P-type structure outperforms the G-type structure in energy absorption at low densities, with the P-type structure developing rapid local cell deformation and the G-type structure experiencing continuous strain hardening during compression.

STEEL RESEARCH INTERNATIONAL (2021)

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Article Thermodynamics

Design analysis of the Schwartz D based heat exchanger: A numerical study

Reza Attarzadeh et al.

Summary: Triply Periodic Minimal Surfaces (TPMS) show promising thermophysical properties, making them suitable for the production of low-temperature waste heat recovery systems. The study conducted simulations to quantify the performance of a TPMS based heat exchanger and found an optimized lattice design providing the highest thermal performance. This research can help improve the fabrication of TPMS heat exchangers for recycling waste heat in low temperature thermal systems.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

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Article Materials Science, Multidisciplinary

A mathematically defined 3D auxetic metamaterial with tunable mechanical and conduction properties

Xiaoyang Zheng et al.

Summary: This study introduces a new 3D auxetic metamaterial generated from an implicit expression, fabricated using 3D printing, and enhanced with a nickel layer for improved performance. Evaluation of the metamaterial's performance through compression tests and finite element analyses, along with contour maps for guidance in functional applications, were presented. Integration of 3D printing and electroless plating allowed accurate control over the mechanical and conduction properties of the material.

MATERIALS & DESIGN (2021)

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Article Engineering, Manufacturing

Theoretical prediction and experimental validation of the digital light processing (DLP) working curve for photocurable materials

Yang Li et al.

Summary: An analytical model based on differential analysis was developed to obtain the relationship between UV light exposure time and cured thickness in DLP printing. Adjusting the concentration of UV absorber in the materials led to good agreement between analytical Jacobs working curves and experimental data. This theoretical model lays the foundation for accurate DLP printing parameters and enables high-precision printing of photocurable materials.

ADDITIVE MANUFACTURING (2021)

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Article Engineering, Industrial

Effect of surface geometry on laser powder bed fusion defects

Alistair Jones et al.

Summary: This study linked build geometry to manufacturability by creating an empirical model to predict geometric error based on local curvature, orientation, and thickness of CAD geometry. The local inclination angle was found to have the strongest effect on manufacturability, impacting geometric error and surface quality metrics. The study also identified sample shape defined by curvature as a secondary factor.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2021)

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Article Materials Science, Multidisciplinary

Stereolithography printing of bone scaffolds using biofunctional calcium phosphate nanoparticles

Ihsan UIIah et al.

Summary: Calcium phosphate (CaP) is widely used for bone defect repair due to its good biocompatibility and osteoconductivity, and additive manufacturing of CaP bioceramics has recently attracted great attention. The study found that biofunctional elements such as magnesium can promote the formation of whitlockite-type calcium phosphate from amorphous calcium phosphate precursors. Gyroid scaffolds with bionic structures fabricated from these nanoparticles may serve as biofunctional scaffolds for bone repair.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2021)

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Article Materials Science, Ceramics

Enhanced electromagnetic microwave absorption of SiOC ceramics targeting the integration of structure and function

Yurun Feng et al.

Summary: SiOC ceramics synthesized by the polymer-derived method exhibit excellent EMW absorption properties, with the presence of free carbon and beta-SiC nanocrystallites significantly enhancing their absorption characteristics. 3D printing technology can be used to create structures with optimal absorption performance, aiding in the improvement and optimization of absorbing material selection in practical applications.

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY (2021)

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Article Engineering, Biomedical

Analytical model for the prediction of permeability of triply periodic minimal surfaces

Reduan Asbai-Ghoudan et al.

Summary: The main objective of this study was to develop a novel analytical framework for calculating the permeability of Triply Periodic Minimal Surfaces (TPMS) structures. The results showed that the permeability of different architectures increased at different rates with porosity, emphasizing the importance of pore distribution and structure. The computed permeability values fit well with the suggested analytical model, indicating the potential for predicting permeability values of TPMS structures based on geometrical parameters.

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS (2021)

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Article Mechanics

An investigation of the strength and stiffness of weight-saving sandwich beams with CFRP face sheets and seven 3D printed cores

Ahmad W. Alshaer et al.

Summary: The study utilized additive manufacturing to create novel core structures for sandwich panels, which were combined with thin CFRP face sheets to optimize strength and stiffness. Among the core structures tested, the small Re-entrant and Gyroid structures showed the highest performance, especially the Gyroid structure which exhibited the highest specific stiffness and strength.

COMPOSITE STRUCTURES (2021)

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Article Computer Science, Interdisciplinary Applications

Simple and efficient volume merging method for triply periodic minimal structures?

Yibao Li et al.

Summary: Triply periodic minimal surfaces (TPMSs) are proven to be suitable for tissue scaffolds. A novel volume merging method for TPMS structures is proposed in this study, which includes a merging algorithm for unit structures and an optimization method to satisfy the properties of TPMSs. The proposed numerical scheme is efficient and robust, showcasing potential for GPU-accelerated implementations.

COMPUTER PHYSICS COMMUNICATIONS (2021)

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Article Computer Science, Interdisciplinary Applications

Design of graded lattice structures in turbine blades using topology optimization

Ebrahim Ahmed Ali Alkebsi et al.

Summary: This paper presents a novel method of designing and manufacturing lightweight lattice structures using TO and AM techniques for enhancing the endurance of turbine blades against high thermal stresses. The proposed lightweight-graded lattice structure design is optimized using LSTO technique, showing improved efficiency in terms of lightweight, stress, and deformation compared to the initial design through numerical results.

INTERNATIONAL JOURNAL OF COMPUTER INTEGRATED MANUFACTURING (2021)

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Article Engineering, Mechanical

The influence of selective laser melting defects on the fatigue properties of Ti6Al4V porosity graded gyroids for bone implants

Dalia Mahmoud et al.

Summary: The study tested the manufacturability of gyroids and found that geometric errors and internal defects during the manufacturing process can affect the mechanical properties of metallic lattice structures. Designs with graded porosity showed higher elastic modulus and compressive strength, but lower fatigue strength.

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES (2021)

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Article Biophysics

Numerical-experimental analysis of the permeability-porosity relationship in triply periodic minimal surfaces scaffolds

Tiago Pires et al.

Summary: Experimental and computational analysis were used to assess the permeability and fluid streamlines within different scaffold geometries, with Gyroid structures being most suitable for bone tissue engineering applications, while Schwarz P structures were found to provide a poor environment for cell seeding and proliferation.

JOURNAL OF BIOMECHANICS (2021)

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Article Engineering, Biomedical

Compressive anisotropy of sheet and strut based porous Ti-6Al-4V scaffolds

Helena Barber et al.

Summary: This study found that sheet-based triply periodic minimal surface (TPMS) scaffolds outperformed strut-based structures in terms of mechanical properties, with higher compressive strength and yield strength. All three topologies exhibited orientational dependence in mechanical properties, with the strut-based architecture showing a higher degree of anisotropy.

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS (2021)

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Article Engineering, Multidisciplinary

Design and analyze of flexure hinges based on triply periodic minimal surface lattice

A. Jiansheng Pan et al.

Summary: The study introduces the innovative application of triply periodic minimal surface lattice structure into flexure hinge design, finding that the primitive lattice is the most suitable for such hinges. The compliance and compliance ratio of the flexure hinges are greatly improved with this new design.

PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY (2021)

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Article Chemistry, Multidisciplinary

Design and Fabrication of a Customized Partial Hip Prosthesis Employing CT-Scan Data and Lattice Porous Structures

Jorge Corona-Castuera et al.

Summary: With the projected increase in the global elderly population, the importance of prosthetic devices for this demographic is growing. Additive manufacturing and self-supported cellular structures in prosthetic design offer significant opportunities to improve the physical and mechanical properties of hip implants. The use of tomography data and internal gyroid-type cell structures in designing personalized partial hip implants can help emulate bone density and fine-tune mechanical properties to match the replaced bone tissue.

ACS OMEGA (2021)

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Article Nanoscience & Nanotechnology

Additively Manufactured Gradient Porous Ti-6Al-4V Hip Replacement Implants Embedded with Cell-Laden Gelatin Methacryloyl Hydrogels

Elham Davoodi et al.

Summary: The development of porous implants with conflicting design criteria has been overcome by designing implants and scaffolds based on interconnected TPMS to enhance both biological response and mechanical strength. Gradually decreasing porosity from the surface to the center provides mechanical strength, while studying unit cell size helps discover the printability limit where specific surface area is maximized.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Decoupling Minimal Surface Metamaterial Properties Through Multi-Material Hyperbolic Tilings

Sebastien J. P. Callens et al.

Summary: This study introduces a parametric metamaterial design strategy for independent tuning of permeability and elastic properties. By applying hyperbolic tiling theory to create simple templates and conducting computational analyses, it demonstrates how this approach enhances the performance space of metamaterials and how the permeability-elasticity balance can be captured using simple scaling laws.

ADVANCED FUNCTIONAL MATERIALS (2021)

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Article Engineering, Industrial

STL-free design and manufacturing paradigm for high-precision powder bed fusion

Junhao Ding et al.

Summary: This paper introduces a new digital design and manufacturing paradigm based on an STL-free workflow to address the scalability and efficiency challenges posed by high-precision PBF and complex geometries. The paradigm seamlessly integrates implicit solid modeling for design and direct slicing for manufacturing, avoiding any intermediate steps related to STL meshes.

CIRP ANNALS-MANUFACTURING TECHNOLOGY (2021)

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Article Engineering, Chemical

Comparative assessment of the effects of 3D printed feed spacers on process performance in MD systems

Navya Thomas et al.

Summary: The study found that the channel pressure drop induced by the spacer became the most influential cost bottleneck on COW for waste heat operated MD processes, with pumping costs having a greater contribution to total operating costs in DCMD compared to AGMD. The use of TPMS spacers can reduce the COW of waste heat operated DCMD by decreasing the thermal energy component, as flux improvement achieved by TPMS spacers reduces the operating cost.

DESALINATION (2021)

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Article Computer Science, Software Engineering

Heterogeneous porous scaffold generation using trivariate B-spline solids and triply periodic minimal surfaces

Chuanfeng Hu et al.

Summary: This study introduces a new method for generating heterogeneous porous scaffolds to overcome the shortcomings of using TPMSs in porous scaffold design. By constructing a threshold distribution field in the parametric domain and mapping TPMS to B-spline solids, a continuous and complete porous scaffold is produced with a new storage format for space-saving.

GRAPHICAL MODELS (2021)

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Article Materials Science, Multidisciplinary

Isotropic porous structure design methods based on triply periodic minimal surfaces

Jiawei Feng et al.

Summary: This study proposes two strategies to design isotropic TPMS structures and investigates the relationship between TPMS parameters and elastic modulus or anisotropy properties through numerical homogenization theory and finite element analysis methods. By utilizing a Curvature-Wall thickness (CW) adjustment method, both elastic modulus and anisotropy properties can be controlled, and composite TPMS structures can be designed by combining TPMS units. Experimental results confirm the effectiveness and accuracy of the proposed approaches.

MATERIALS & DESIGN (2021)

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Article Materials Science, Multidisciplinary

Transition boundaries and stiffness optimal design for multi-TPMS lattices

Fangxi Ren et al.

Summary: By optimizing the design of multi-scale and multi-TPMS lattices, utilizing specific lattice units in different stress regions, the performance and functionality of the structure can be significantly improved.

MATERIALS & DESIGN (2021)

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Article Materials Science, Multidisciplinary

Combinational design of heterogeneous lattices with hybrid region stiffness tuning for additive manufacturing

Nan Yang et al.

Summary: Lattices with engineered properties are important in various engineering applications, but current additive manufacturing (AM) and computer-aided design (CAD) methods have limitations. A new AM & CAD method is proposed in this study, which integrates all processes of designing complex lattice structures and can design heterogeneous lattice structures with irregular, gradient, and hybrid features.

MATERIALS & DESIGN (2021)

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Article Thermodynamics

Heat transfer performance of a finned metal foam-phase change material (FMF-PCM) system incorporating triply periodic minimal surfaces (TPMS)

Zahid Ahmed Qureshi et al.

Summary: Metal foams are extensively used in thermal energy storage systems and thermal management systems to enhance the thermal conductivity of phase change materials. With the advancement of additive manufacturing technology, the utilization of various candidate foams and structures in TES systems and TMS systems is made possible by easily manufacturing intricate and complex architectures. TPMS-based foams have demonstrated enhanced heat transfer performance, making them promising for applications in TES systems and TMS systems.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

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Article Engineering, Biomedical

Functional repair of critically sized femoral defects treated with bioinspired titanium gyroid-sheet scaffolds

Cambre N. Kelly et al.

Summary: This study evaluated the performance of gyroid-sheet titanium scaffolds produced via additive manufacturing in repairing critically sized bone defects in rats. The scaffolds showed promising results in repairing segmental defects and promoting bone growth, with superior torsional strength and stiffness compared to intact controls. This suggests a potential new treatment option for critically sized bone defects.

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS (2021)

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Article Engineering, Civil

3D printed sandwich beams with bioinspired cores: Mechanical performance and modelling

Chenxi Peng et al.

Summary: This study investigates the performance of sandwich structures with TPMS cores using experiments, numerical simulations, and theoretical formulations. The results show a significant impact of core density and geometrical designs on the bending properties and energy absorption capacity of the structures. Sandwich structures with Neovius cores exhibit better performance in designs with thin face-panels.

THIN-WALLED STRUCTURES (2021)

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Article Materials Science, Multidisciplinary

Architected implant designs for long bones: Advantages of minimal surface-based topologies

Meng-Ting Hsieh et al.

Summary: This study investigated the suitability of three different topological materials for long bone implants and found that surface-based topologies may promote better bone growth than traditional truss-based designs. Spinodal surface-based architected materials were shown to have the best performance, potentially allowing scalable fabrication of implants with improved bone growth efficiency.

MATERIALS & DESIGN (2021)

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Article Biophysics

A multiscale optimisation method for bone growth scaffolds based on triply periodic minimal surfaces

E. F. Lehder et al.

Summary: Tissue engineered bone scaffolds based on triply periodic minimal surfaces (TPMS) offer high surface-to-volume ratio and tailorable stiffness, but the optimal scaffold type for rapid cell or tissue growth remains unclear. This study examines six TPMS scaffold types and proposes a methodology to optimize their geometry for use as bone grafts, with the Lidinoid and Split P cell types identified as the best candidates for promoting cell growth.

BIOMECHANICS AND MODELING IN MECHANOBIOLOGY (2021)

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Article Automation & Control Systems

Compression and energy absorption of maraging steel primitive scaffolds produced by powder bed fusion

Amanda Rossi de Oliveira et al.

Summary: The study investigated the compression responses of maraging steel 300 primitive scaffolds under compressive loading in different directions, showing that specimens subjected to aging treatment had improved strength and collapse strength. Energy absorption capacity of TPMS was observed to have a non-linear correlation with strain, and mechanical performance depended on post heat treatment and loading direction.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY (2021)

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Article Thermodynamics

Predicting thermal and mechanical performance of stochastic and architected foams

Fangzhou Wang et al.

Summary: This study conducted pore-scale simulations to estimate the stagnant thermal conductivity and mechanical performance of stochastic metal foams and architected metal foams. The findings show that architected foams with a triply periodic minimal surface exhibit significantly higher thermal conductivity, stiffness, and energy absorption capability compared to stochastic foams, indicating potential for multifunctional foam applications.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2021)

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Article Engineering, Mechanical

Design, mechanical properties and energy absorption capability of graded-thickness triply periodic minimal surface structures fabricated by selective laser melting

Xiaojie Fan et al.

Summary: This study introduces a novel method for designing graded-thickness TPMS structures and summarizes and compares the manufacturability, mechanical properties, and energy absorption capacities of Ti6Al4V graded samples with different thicknesses and TPMS types. The results reveal that constant-thickness TPMS samples exhibit good stiffness, strength, and energy absorption capacities, while graded-thickness samples avoid large stress fluctuations and show higher elastic moduli and cumulative energy absorption values than constant-thickness samples. Additionally, the local curvature distribution predicts the deformation behavior of TPMS structures.

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES (2021)

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Article Engineering, Chemical

Structure-dependent gas transfer performance of 3D-membranes for artificial membrane lungs

Felix Hesselmann et al.

Summary: State-of-the-art artificial membrane lungs use hollow fiber membranes, with advances in additive manufacturing enabling the fabrication of novel membrane designs based on TPMS geometries that achieve significantly higher oxygen transfer rates (up to 69.8%) compared to traditional hollow fiber designs. The study established a fabrication process using 3D-printed molds and conducted in vitro tests under standardized conditions, demonstrating the superior performance of TPMS geometries in blood gas transfer.

JOURNAL OF MEMBRANE SCIENCE (2021)

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Article Materials Science, Multidisciplinary

Fabrication of porous β-TCP/58S bioglass scaffolds via top-down DLP printing with high solid loading ceramic-resin slurry

Xiang Li et al.

Summary: In this study, porous beta-TCP/BG scaffolds with high solid loading ceramic slurry were fabricated using top-down DLP technique. The effects of solid loading on viscosity and curing reactivity were evaluated, as well as the microstructure, mechanical strength, porosity, and shrinkage of the composite scaffolds. The results indicate that the composite scaffold has promising potential for load-bearing bone tissue engineering applications due to its intensified biocompatibility and osteogenic capability.

MATERIALS CHEMISTRY AND PHYSICS (2021)

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Article Physics, Condensed Matter

Poisson's Ratio and Modulus of Gyroid Lattices

Tyler DeValk et al.

Summary: Gyroid surface lattices of different densities show Young's modulus behavior approaching the Hashin-Shtrikman upper bound dominated by stretching, with a consistent Poisson's ratio of 0.34 +/- 0.06 regardless of direction, specimen diameter, and chirality. This is in contrast with prior chiral lattices that exhibited size effects in Poisson's ratio.

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS (2021)

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Article Chemistry, Multidisciplinary

Stepping toward Efficient Microreactors for CO2 Methanation: 3D-Printed Gyroid Geometry

Francisco M. Baena-Moreno et al.

Summary: The study evaluates the influence of metal substrate geometry on the CO2 methanation reaction, showing the advantages of 3D complex geometries over traditional honeycomb structures, leading to a potential 14% improvement in CO2 conversion under various conditions.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2021)

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Article Materials Science, Multidisciplinary

Increasing fracture toughness via architected porosity

Kaitlynn M. Conway et al.

Summary: Fracture toughness, rather than strength, is often the limiting factor of structural materials. Developing new base materials with improved fracture toughness often takes more than a decade. Alternatively, topological design has recently been expanded by additive manufacturing to improve fracture toughness in a cost-effective and simple manner across a range of materials.

MATERIALS & DESIGN (2021)

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Article Engineering, Industrial

A toolpath-based layer construction method for designing & printing porous structure

Yicha Zhang et al.

Summary: An implicit design method using printing toolpaths to construct printable parametric porous structures is proposed in this paper to address the issues in current porous structure design methods. Experimental case studies demonstrate the feasibility and efficiency of the proposed method.

CIRP ANNALS-MANUFACTURING TECHNOLOGY (2021)

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Article Chemistry, Multidisciplinary

Soap film inspired mechanical metamaterials approaching theoretical bound of stiffness across full density range

Biwei Deng et al.

Summary: Researchers have generated a series of mechanically isotropic ISO-CMC structures by imitating the natural occupation of periodic volume by inflated soap films, exhibiting bulk moduli over 94% of the theoretical limit. These phenomena are found to be in close relation to the curvature-driven design of their metamaterial structures.

MATERIALS HORIZONS (2021)

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Article Engineering, Multidisciplinary

Optimal grading of TPMS-based lattice structures with transversely isotropic elastic bulk properties

Niclas Stromberg

Summary: This study developed a TO-based framework for functional grading of lattice structures with different material properties, derived material interpolation laws numerically and implemented them using various models. Additionally, it generated an STL file for further analysis and 3D printing.

ENGINEERING OPTIMIZATION (2021)

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Article Mechanics

Permeability and fluid flow-induced wall shear stress in bone scaffolds with TPMS and lattice architectures: A CFD analysis

Davar Ali et al.

EUROPEAN JOURNAL OF MECHANICS B-FLUIDS (2020)

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Article Materials Science, Multidisciplinary

Investigation on the failure mechanism of triply periodic minimal surface cellular structures fabricated by Vat photopolymerization additive manufacturing under compressive loadings

M. Keshavarzan et al.

MECHANICS OF MATERIALS (2020)

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Article Engineering, Biomedical

Functionally graded and multi-morphology sheet TPMS lattices: Design, manufacturing, and mechanical properties

Oraib Al-Ketan et al.

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS (2020)

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Article Chemistry, Multidisciplinary

3D-Printed Ultra-Robust Surface-Doped Porous Silicone Sensors for Wearable Biomonitoring

Elham Davoodi et al.

ACS NANO (2020)

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Article Thermodynamics

Macroscopic transport properties of Gyroid structures based on pore-scale studies: Permeability, diffusivity and thermal conductivity

Ji-Wang Luo et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2020)

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Article Engineering, Mechanical

Mechanical and energy absorption characteristics of additively manufactured functionally graded sheet lattice structures with minimal surfaces

Miao Zhao et al.

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES (2020)

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Article Materials Science, Ceramics

Pseudo-ductile fracture of 3D printed alumina triply periodic minimal surface structures

Lei Zhang et al.

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY (2020)

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Article Engineering, Manufacturing

Efficient generation strategy for hierarchical porous scaffolds with freeform external geometries

Jiawei Feng et al.

ADDITIVE MANUFACTURING (2020)

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Article Engineering, Manufacturing

Layer by layer coating for bio-functionalization of additively manufactured meta-biomaterials

S. Amin Yavari et al.

ADDITIVE MANUFACTURING (2020)

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Article Engineering, Manufacturing

Biomechanical influence of structural variation strategies on functionally graded scaffolds constructed with triply periodic minimal surface

Xiang-Yu Zhang et al.

ADDITIVE MANUFACTURING (2020)

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Article Materials Science, Biomaterials

Tailored Three-Dimensionally Printed Triply Periodic Calcium Phosphate Implants: A Preclinical Study for Craniofacial Bone Repair

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