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

Advances in Materials Science and Engineering, Год журнала: 2023, Номер 2023, С. 1 - 13

Опубликована: Сен. 30, 2023

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

Язык: Английский

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Quasi-static compression and energy absorption behaviour of polymeric selective laser sintered open cell lattices under varying relative densities

Rapid Prototyping Journal, Год журнала: 2024, Номер 30(4), С. 643 - 661

Опубликована: Фев. 20, 2024

Purpose The purpose of this paper is to compare the influence relative density (RD) and strain rates on failure mechanism specific energy absorption (SEA) polyamide lattices ranging from bending stretch-dominated structures using selective laser sintering (SLS). Design/methodology/approach Three two unit cells were selected based Maxwell stability criterion. Lattices designed with three RD fabricated by SLS technique PA12 material. Quasi-static compression tests carried out Taguchi's L9 experiments. lattice compressive behaviour was verified Gibson–Ashby analytical model. Findings It has been observed that played a vital role in properties controlling mechanisms, resulting distinct post-yielding responses as fluctuating stable hardening plateau region. Analysis variance (ANOVA) displayed significant impact emphasised dissimilar influences rate vary cell topology. Bending-dominated showed better than lattices. interesting observation over-stiff topology exhibited less contrary criterion, whereas SEA face-centered body-centered cubic vertical horizontal struts (FBCCXYZ). Practical implications This comparative study expected provide new prospects for designing end-user parts undergo various conditions like automotive bumpers evolving techniques hybrid functionally graded Originality/value To best authors' knowledge, first work relates also highlights transformation ductile brittle while increase analytically

Язык: Английский

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Effect of Pore Architecture of 3D Printed Open Porosity Cellular Structures on Their Resistance to Mechanical Loading: Part I – Experimental Studies

Acta Mechanica et Automatica, Год журнала: 2024, Номер 18(3), С. 419 - 426

Опубликована: Июль 17, 2024

Abstract The development of additive manufacturing (AM) techniques has sparked interest in porous structures that can be customized terms size, shape, and arrangement pores. Porous lattice structure (LS, called also struct) offer superior specific stiffness strength, making them ideal components for lightweight products with energy absorption heat transfer capabilities. They find applications industries such as aerospace, aeronautics, automotive, bone ingrowth applications. One the main advantages is freedom design, control over geometry architecture, cost time savings, waste reduction, product customization. However, designation appropriate struct/pore to achieve desired properties remains a challenge. In this part study, five structs various pore sizes, two volume fractions each, shapes (ellipsoidal, helical, X-shape, trapezoidal, triangular) were designed manufactured using selective laser sintering (SLS) technology. Mechanical tested through uniaxial compression, apparent stress-strain curves analyzed. results showed compression tests revealed both monotonic non-monotonic curves, indicating different behaviors among structures. helical exhibited highest resistance while other similarities their mechanical properties. Part II study provides comprehensive analysis these findings, emphasizing potential purpose-designed engineering

Язык: Английский

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Marine Waste Management of Oyster Shell Waste as Reinforcement for Clay Additive Manufacturing Components

International Journal of Precision Engineering and Manufacturing-Green Technology, Год журнала: 2024, Номер unknown

Опубликована: Июнь 10, 2024

Язык: Английский

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Crashworthiness study of polyamide bi-tubular thin-walled tubes using hybrid lattice filling

Journal of Cellular Plastics, Год журнала: 2024, Номер unknown

Опубликована: Окт. 7, 2024

Thin-Walled Tubes (TWT) are widely used as crashworthiness elements to absorb and dissipate kinetic energy during collision through plastic deformation. Various design strategies, including nested tubes, triggers, filling with lattices, commonly enhance the of TWT. Additive Manufacturing (AM) offers unique opportunities produce complex lattice-filled TWT higher precision, but challenges persist in fabrication bi-tubular crashworthiness. The aim this study is propose an approach for hybrid lattice structures. In preliminary phase, parametric was conducted understand influence tube cross-section geometry, thickness, trigger hole diameter on empty using Taguchi’s L9 orthogonal array. Empty TWTs were fabricated Selective Laser Sintering (SLS) PA12 material compressed uni-axially at 8 mm/min speed. second filled three different unit cells such Cube, Kelvin, Octet Truss (OT) having 30% relative density. approach, two strategies followed uniform filling. Designed tested under uni-axial compression speeds mm/sec. Based results study, it has been observed that geometry thickness significantly SEA increase stiffness number folding. With help Signal Noise (S/N) ratio graph, appropriate levels selected input lattice-filling approach. phase revealed enhances deformation modes, absorption, properties TWTs. Hybrid better Specific Energy Absorption (SEA) 18.32 kJ/kg mm/sec speed, which 113.9% than 42.8% This work demonstrated adopting one potential ways protective equipment crash boxes frames.

Язык: Английский

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Taking inspiration from medieval architecture: Using catenary arches in place of straight beam as the building block into bending-dominated lattice structures

Engineering Failure Analysis, Год журнала: 2023, Номер 152, С. 107476 - 107476

Опубликована: Июль 9, 2023

Язык: Английский

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Experimental investigation of mechanical stiffness in lattice structures fabricated with PLA using fused deposition modelling

Journal of Achievements of Materials and Manufacturing Engineering, Год журнала: 2023, Номер 119(2 extended), С. 60 - 71

Опубликована: Авг. 1, 2023

The objective of the paper is to design and characterise with polylactic acid (PLA) material three cellular structures in form lattices which are diagonal-octet-centred shapes for two sizes 6x6x6 12x12x12 a compression test examine their stiffness using FDM technology compared polyjet technology.The study used analytical approaches investigate lattice structures: experimental analysis theoretical analysis. Experimental methods such as tests were conducted determine characteristics structures. In addition, was Hook's law Ashby's Gibson model predict appropriate behaviour. combination provided comprehensive understanding properties.The examined impact shape size structure on lightness objects 3D printed by PLA material. research revealed that diagonal good balance between lightness. While byte even lighter, mass ratio 2.09 structure, it less rigid, 0.43, making more suitable certain applications. highlights importance considering both when designing 3D-printed specific mechanical properties; chosen could be choice applications where important.The limitations lie its limited scope, focusing primarily effect (octet-diagonal centred) unit cell Young's modulus Other aspects printing, selection thermal properties, not considered. Furthermore, results obtained printing parameters conditions chosen, limits generalizability other configurations or methods. However, these have important implications optimising process. They enable identification optimal parameters, size, produce stiffer, higher-quality helping improve properties parts, paving way efficient manufacturing stronger components.Our can decision aid parts. Indeed, we choose 6x6x6, would provide favourable functional parts.The explores technology, presents new direction additive manufacturing. takes an approach evaluate reliability various technologies creating insight into most reliable producing

Язык: Английский

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Design and strengthening of dual bio-inspired lattice structures based on additive manufacturing

Alexandria Engineering Journal, Год журнала: 2024, Номер 113, С. 573 - 583

Опубликована: Ноя. 26, 2024

Язык: Английский

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Design, manufacturing, and deformation behavior of novel bio-inspired lattice structures with arc-shaped strut configurations

Rapid Prototyping Journal, Год журнала: 2024, Номер unknown

Опубликована: Дек. 23, 2024

Purpose Natural elements in the biological organs of plants and animals consist repetitive geometries, which often form basis for new lattice structure design with improved performance. The purpose this study is to investigate energy absorption capabilities deformation behavior structures inspired by Helleborus petticoat flower fish scale patterns. Design/methodology/approach authors designed arc-shaped strut incorporating geometrical features pattern into configuration. were printed from thermoplastic polyurethane (TPU) material using fused deposition modeling process tested under uniaxial compression. parameters, such as specific (SEA), mean plateau stress, onset densification strain efficiency determined, mechanism static compression was analyzed. SEA proposed compared other TPU reported literature. Findings results show that configuration affects mechanical properties, characteristics bio-inspired structures. found be range 0.34–0.97 kJ / kg. Overall, novel flower-inspired displayed significantly higher (+185%), scale-derived structure. Originality/value To best authors’ knowledge, have first time. had never been previously.

Язык: Английский

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Determination of cell size/structures and mechanical properties of additively manufactured metallic components using X-ray technique

Rapid Prototyping Journal, Год журнала: 2023, Номер 29(10), С. 2039 - 2060

Опубликована: Авг. 9, 2023

Purpose Additive manufacturing (AM), a rapidly evolving paradigm, has shown significant advantages over traditional subtractive processing routines by allowing for the custom creation of structural components with enhanced performance. Numerous studies have that technical qualities AM are profoundly affected discovery novel metastable substructures in diverse alloys. Therefore, purpose this study is to determine effect cell structure parameters on its mechanical response. Design/methodology/approach Initially, methodology was suggested testing porous materials, focusing static tensile testing. For qualitative evaluation cellular structures produced, computed tomography (CT) used. Then, CT scanner used analyze sample and actual relative density, as well perform detailed geometric analysis. Findings The experimental research demonstrates properties cell’s significantly influenced shape during formation. It also determined using selective laser melting produce minimum single-cell size approximately 2 mm would be most appropriate method. Research limitations/implications Further their strength planned future. will carried out larger number samples, taking into account wider range parameters. An important step verification results test numerical analysis model obtained scanning. Originality/value fabrication metallic parts different very melted machine. However, determination quiet current investigation.

Язык: Английский

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