Strengthening mechanisms of minimal surface lattices with CT deviation

International Journal of Mechanical Sciences, Journal Year: 2022, Volume and Issue: 240, P. 107932 - 107932

Published: Nov. 13, 2022

Language: Английский

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3D Printing of Flexible Mechanical Metamaterials: Synergistic Design of Process and Geometric Parameters

Polymers, Journal Year: 2023, Volume and Issue: 15(23), P. 4523 - 4523

Published: Nov. 24, 2023

Mechanical metamaterials with ultralight and ultrastrong mechanical properties are extensively employed in various industrial sectors, three-periodic minimal surface (TPMS) structures gaining significant research attention due to their symmetry, equation-driven characteristics, exceptional properties. Compared traditional lattice structures, TPMS exhibit superior performance. The of depend on the base material, structural porosity (volume fraction), wall thickness. Hard rigid such as Gyroid, diamond, primitive outstanding performance terms elastic modulus, energy absorption, heat dissipation, transfer. Flexible other hand, offer higher elasticity recoverable large deformations, drawing for use applications seat cushions helmet impact-absorbing layers. Conventional fabrication methods often fail guarantee quality structure samples, additive manufacturing technology provides a new avenue. Selective laser sintering (SLS) has successfully been used process materials. However, layer-by-layer process, it cannot eliminate anisotropy caused by interlayer bonding, which impacts 3D-printed parts. This paper introduces data-driven optimization design approach geometry adjusting volume fraction gradients overcome isotropic structures. Experimental validation analysis conducted using fabricated TPU material via SLS. Furthermore, advantages gradient-designed functions absorption dissipation explored.

Language: Английский

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Mechanical evaluation of elastomeric thermoplastic polyurethane additively manufactured triply periodic minimal surface area lattice structures for adjustable cushioning properties

Rapid Prototyping Journal, Journal Year: 2024, Volume and Issue: 30(6), P. 1070 - 1086

Published: May 10, 2024

Purpose Cushioning is a useful material property applicable for range of applications from medical devices to personal protective equipment. The current ability apply cushioning in product context limited by the appropriateness available materials, with polyurethane foams being gold standard material. purpose this study investigate additively manufactured flexible printing scaffold structures as an alternative. Design/methodology/approach In study, investigates triply periodic minimal surface (TPMS) structures, including Gyroid, Diamond and Schwarz P formed thermoplastic (TPU), possible Each TPMS structure was fabricated using extrusion additive manufacturing evaluated ASTM mechanical testing polymers. This focuses attention fixed unit cell size 10 mm examine compressive properties changes porosity samples TPU shore hardness 63A 90A. Findings It discovered that increased there measured reduction load required deform scaffold. Additionally, complex relationship between stiffness structure. highlighted through adjustment porosity, strength scaffolds point densification could be controlled predicted high repeatability. Originality/value results indicate tailor design parameters both 90A material, mimic loading common foams. use these indicates next generation tailored techniques tailoring geometry strengths.

Language: Английский

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Exploring the Impact of Surface Modifications on the Mechanical Characteristics of Acrylonitrile Butadiene Styrene Parts Manufactured Using Fused Deposition Modeling 3D Printing

Journal of Materials Engineering and Performance, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 3, 2025

Language: Английский

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Dual design for additive manufacturing in engineering design: a systematic literature review

Rapid Prototyping Journal, Journal Year: 2025, Volume and Issue: 31(11), P. 40 - 61

Published: Jan. 9, 2025

Purpose Dual design for additive manufacturing (DfAM) takes into account both the opportunities and constraints of AM simultaneously, which research shows is more effective than considering them separately. Unlike existing reviews, this paper aims to map DfAM within engineering process, focusing solely on studies adopting dual DfAM. Additionally, it suggest future directions by analysing prominent themes their inter-relationships. Special emphasis theme inter-relationships concerning conceptual, embodiment detail phases. Design/methodology/approach The study based a systematic literature review 148 publications from January 2000 February 2024. After screening, were identified systematically analysed. Theme explored using quantitative analysis chord diagrams. Findings findings reveal that either span entire early phases or later Most focuses phases, particularly optimisation, evaluation AM-specific constraints. most frequent inter-relationship occurs between optimisation Overall, advance research, such as development rules guidelines cellular structures. Originality/value This proposes model mapping in relation process. Another original contribution lies visualising diagrams – novel approach did not exist before.

Language: Английский

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3D-printed bioinspired cage lattices with defect-tolerant mechanical properties

Additive manufacturing, Journal Year: 2024, Volume and Issue: 82, P. 104036 - 104036

Published: Feb. 1, 2024

Language: Английский

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Enhancing tensile properties of polymer‐based triply periodic minimal surface metamaterial structures: Investigating the impact of post‐curing time and layer thickness via response surface methodology

Polymer Engineering and Science, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 9, 2024

Abstract This research aims to explore the influence of post‐curing time and layer thickness on tensile characteristics various triply periodic minimal surface (TPMS) structures produced by mask stereolithography (MSLA). The study determined best duration, thickness, TPMS lattice type improve ultimate strength (UTS) absorbed energy. To experimentally evaluate characteristics, a dog bone‐shaped specimen was utilized. Three distinct structures, Gyroid (G), Neovius (N), Diamond (D), were present in test region. After investigating many process factors with response methodology (RSM), optimization methods are applied find their printing procedure. work shows novel use RSM optimize parameters structure mechanical properties during manufacturing. According results, biggest factor affecting UTS is while most significant increasing energy curing time. optimal operating for MSLA based results 0.05 mm, period 40 min, N. optimum responses corresponding as 7.16 MPa 18.16 J Highlights Optimized production geometries. Compared performance. Identified input absorption. Conducted comprehensive experimental evaluations validate optimization.

Language: Английский

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A topological approach for optimizing the dimensional properties of various bioinspired periodic type honeycomb latticed carbon fiber reinforced glycol‐modified poly (ethylene terephthalate) composite materials

Polymer Composites, Journal Year: 2024, Volume and Issue: 45(6), P. 5068 - 5083

Published: Jan. 16, 2024

Abstract The present research efforts are directed toward investigating dimensional stability, focusing on bio‐inspired periodic honeycomb lattice structures within carbon fiber reinforced glycol‐modified poly ethylene terephthalate (PETG) composites. These samples fabricated using extrusion‐based 3D printing, with topological parameters such as shell thickness (ST), unit cell type (UCT), wall (WT), orientation (UCO), skewing angle (SA), and size (UCS) being manipulated across three different levels. experimental findings indicate that achieving the lowest length error is attainable under specific conditions, including a smaller ST of 0.5 mm, square UCT, WT UCO 90°, SA 0°, UCS 4 mm. Analyzing results ANOVA reveals UCT (28.82%) (18.73%) exert most significant influence stability response. regression model closely aligns outcomes, an percentage 3%, rendering it suitable for large‐scale customization. Under optimized parameters, fiber‐reinforced PETG latticed composites exhibited 0.292 mm compressive strength 21.56 MPa. Fractography analysis revealed brittle mode fracture all samples, indicating their stiffness strength, especially when compared to lower thickness. suggest designed composite material holds potential use in minor surgical orthotic prosthetic applications. Highlights Bio‐inspired structured Topological optimization properties. Taguchi performed design‐based structures. Unit has highest contribution 28.82%

Language: Английский

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Topological approach for optimizing the compressive properties of the square lattice-structured recycled walnut shell Poly Lactic Acid composite

Journal of Building Engineering, Journal Year: 2023, Volume and Issue: 76, P. 107130 - 107130

Published: June 16, 2023

Language: Английский

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Topological design factor optimization in the development of periodic‐type honeycomb lattice structure on the carbon fiber reinforced polyethylene terephthalate glycol composite

Polymer Composites, Journal Year: 2023, Volume and Issue: 44(12), P. 8640 - 8657

Published: Sept. 17, 2023

Abstract In most of the automobile and aerospace materials, cellular structures are extensively used due to their lightweight high energy absorption capabilities. Naturally available animal bones plant stems light in weight natural structures. This may inspire various researchers for integrating lattice such as beam, planar, triply periodic minimal surfaces, voronoi on structural materials. The development using 3D printing technology has opened up major attention towards fabricating components without any complications. this study, detailed crashworthiness responses compressive strength was optimized terms varying topology‐related factors carbon fiber reinforced polyethylene terephthalate glycol (CF/PETG) composite. experimentation conducted concerning variable topology shell thickness, unit cell type, wall thickness (WT), orientation (UCO), skewing angle, size. model examined by means Taguchi optimization technique. response analyzed compression test moreover, experimental is processes. From observation, which contributed more higher will be UCO 65.47% WT 15.20%. Results regression study show that R square value with concern 92.74%. design parametric condition CF/PETG composite established a 41.179 MPa, overall results, it clear variation developed huge favorable impact mechanical characteristics lattice‐structured polymer Highlights Hexagonal Lattice structure incorporation PETG Design properties. performed design‐based Unit percentage contribution strength.

Language: Английский

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