Heliyon, Год журнала: 2024, Номер 10(24), С. e40550 - e40550
Опубликована: Ноя. 30, 2024
Язык: Английский
Polymers, Год журнала: 2024, Номер 16(7), С. 991 - 991
Опубликована: Апрель 4, 2024
Polylactic acid (PLA) stands out as a biomaterial with immense potential, primarily owing to its innate biodegradability. Conventional methods for manufacturing PLA encompass injection molding or additive (AM). Yet, the fabrication of sizable medical devices often necessitates fragmenting them into multiple components printing, subsequently requiring reassembly accommodate constraints posed by dimensions AM platform. Typically, laboratories resort employing nuts and bolts assembly printed expansive devices. Nonetheless, this conventional approach jointing is susceptible inherent risk loosening dislodging amid reciprocating movements apparatus. Hence, investigation joining techniques integrating has emerged critical focal point within realm research. The main objective enhance joint strength polymer rods using rotary friction welding (RFW). mean bending welded components, fabricated under seven distinct rotational speeds, surpasses that underlying substrate material. average improvement rate parts RFW three-stage transformation 4000 rpm about 41.94% compared base surface hardness weld interface 1.25 3.80% higher than performed variable speed at fixed rotating speed. temperature rise maximum recorded during in X-axis CNC turning machine outer edge part surpassed those observed internal part. Remarkably, proposed method study complies Sustainable Development Goals due high energy efficiency low environmental pollution.
Язык: Английский
Процитировано
2
Polymers, Год журнала: 2024, Номер 16(14), С. 1986 - 1986
Опубликована: Июль 11, 2024
This systematic review interrogates the literature to understand what is known about environmental sustainability of fused filament fabrication, FFF (also as deposition modeling, FDM), based on life cycle assessment (LCA) results. Since substantial energy demand systematically addressed one main reasons for ecological damage in FFF, mitigation strategies are often reducing printing time (for example, adopting thicker layers) or embodied per part (e.g., by nesting, which means multiple parts same job). A key parameter infill degree, can be adjusted application requirements while saving time/energy and feedstock material. The adoption electricity from renewable resources also expected boost distributed manufacturing through FFF. Meanwhile, bio-based recycled materials being investigated less impactful alternatives conventional fossil fuel-based thermoplastic filaments.
Язык: Английский
Процитировано
2
Sustainability, Год журнала: 2024, Номер 16(14), С. 5998 - 5998
Опубликована: Июль 13, 2024
The use of acrylonitrile butadiene styrene (ABS) in additive manufacturing applications constitutes an elucidating example a promising match sustainable material to production process. Lean-and-green datacentric-based techniques may enhance the sustainability product-making and process-improvement efforts. mechanical properties—the yield strength ultimate compression strength—of 3D-printed ABS product specimens are profiled by considering as many eleven controlling factors at process/product design stage. A fractional-factorial trial planner is used sustainably suppress three orders magnitude experimental needs for materials, machine time, work hours. Gibbs sampler neutrosophic profiler employed treat complex process taking into account potential data uncertainty complications due multiple distributions indeterminacy issues inconsistencies owing testing conditions. small-data multifactorial screening outcomes appeared steadily converge (the layer height, infill pattern angle, outline overlap) with couple extra number top/bottom layers density) supplement linear modeling effort provide adequate predictions maximizing responses two examined properties. performance optimal exhibited acceptable discrepancies, which were estimated 3.5% confirmed mean 51.70 MPa 5.5% 53.58 MPa. verified predictors that optimally determined from this study (1) thickness—set 0.1 mm; (2) angle—set 0°; (3) overlap—set 80%; (4) layers—set 5; (5) density—set 100%. datacentric approach composed planner, sampler, be further tested on more intricate materials composites while introducing additional product/process characteristics.
Язык: Английский
Процитировано
2
Additive manufacturing, Год журнала: 2024, Номер 97, С. 104602 - 104602
Опубликована: Дек. 11, 2024
Язык: Английский
Процитировано
2
Polymers, Год журнала: 2023, Номер 15(24), С. 4639 - 4639
Опубликована: Дек. 7, 2023
This article is focused on a mechanical properties investigation of three types sustainable poly lactic acid materials manufactured using the fused filament fabrication process. The purpose this work was to study impact printing strategies and predict behavior under tensile loading finite element analysis. testing conducted according ISO 527 standard. numerical simulations were in Simufact Forming 2022 software. Analysis experimental data showed dependance used strategy. Clear PLA samples printed XY plane exhibited 43% reduction strength 49% elongation compared from same material YZ plane. results show influence orientation 3D-printed samples.
Язык: Английский
Процитировано
4
Applied Sciences, Год журнала: 2024, Номер 14(14), С. 6048 - 6048
Опубликована: Июль 11, 2024
The paper explores enhancing the mechanical behavior of stochastic lattice structures through a semi-controlled design approach. By leveraging Gibson-Ashby model and predefined geometric routines, study aims to optimize response under compressive stress. Transitioning from tessellation using Rhinoceros 7 software enables more predictable deformation behavior. Design parameters such as node formation, strut thickness, generation patterns are correlated with relative density regulate stiffness strength. Experimental validation Acrylic Styrene Acrylonitrile (ASA) filament demonstrates effectiveness proposed model. research emphasizes importance understanding internal mechanics by introducing novel approach control geometry topology arrangement in shaping properties. mechanism, seeks improve reliability uniformity responses structures. findings highlighted benefits approaches achieving tailored Specimens were compression tested quasi-static uniaxial loading showed that created parabolic distribution dimensioned hp=0.5hv originated most reliable vital compared other models, including typical Voronoi distribution. improved between models constantly progressed about 15% on average consecutively, starting hp=1.0hv weakest ranked, up best one, hp=0.5hv, even better than has introduced an entirely significantly enhances product’s volume routines guarantee validity topologic entities. Uniaxial tests blocks effect properties these structures, having shown particularly crucial repeatability stability. Overall, contributes advancing field lightweight methodology material characterization.
Язык: Английский
Процитировано
1
Lubrication Science, Год журнала: 2024, Номер 36(8), С. 595 - 609
Опубликована: Авг. 7, 2024
ABSTRACT This paper proposes an optimisation method for fabricating composite materials and functionally graded structures. Using the proposed method, 3D printing of copper (Cu)–polyethylene (PE) composite, Al 2 O 3 –ZrO ceramic CuO foams are utilised. work aims to advance capabilities additive manufacturing by leveraging nature‐inspired approaches create complex, tailored structures with enhanced performance across various industries. The major objective is reduce feed rate increase airflow temperature heat transfer process. technique in advanced preparation conditions, Cu–PE composites unreliable Cu substances fabricated. PE binder particle melting as well forming thick means soft surfaces. AHO approach, common distributions can be efficiently optimised. By then, model implemented on MATLAB platform, its execution calculated using current procedures. displays superior outcomes all existing methods like wild horse optimiser, swarm heap‐based optimiser. shows a throughput 57 mm . 32, 27 45 results show that has higher compared methods.
Язык: Английский
Процитировано
1
Heliyon, Год журнала: 2024, Номер 10(24), С. e40550 - e40550
Опубликована: Ноя. 30, 2024
Язык: Английский
Процитировано
1