Published in Mechanics & Industry
Additive manufacturing (AM) is becoming an important alternative to traditional processes. AM technology shows several advantages in literature, and its use increases in aerospace, automotive and biomedicine. Time reduction in design-to-manufacturing cycle, customization, capability to generate complex shapes in one piece and ability to imitate low...
Published in 3D Printing in Medicine
BackgroundModern low-cost 3D printing technologies offer the promise of access to surgical tools in resource scarce areas, however optimal designs for manufacturing have not yet been established. We explore how the optimization of 3D printing parameters when manufacturing polylactic acid filament based Army-Navy retractors vastly increases the stre...
Published in Journal of the Brazilian Society of Mechanical Sciences and Engineering
The arc welding-based additive manufacturing technology is in its developing state. This technology can be utilized to produce free-form metallic structures for the aerospace and biomedical industry. The current article presents the design of semi-automatic gas tungsten arc welding-based additive manufacturing system for fabricating thin-walled met...
Published in SN Applied Sciences
Selective laser sintering (SLS) system is an additive manufacturing technique used in a variety of different applications, such as tool industries, medicine, aerospace, automotive, and electronics. A prototype SLS system was designed, built, and validated to improve SLS-manufactured part quality in terms of porosity and surface roughness. The proto...
The objective of this work was to verify a relatively new fusion-based additive manufacturing (AM) process to produce a high-temperature aerospace material. The nickel-based superalloy Inconel 625 (IN625) was manufactured by an arc-based AM technique. Regarding microstructure, typical columnar-oriented dendritic structure along the building directi...
Published in 3D Printing in Medicine
BackgroundThe design freedom allowed by three-dimensional (3D) printing enables the production of acetabular off-the-shelf cups with complex porous structures. The only studies on these designs are limited to clinical outcomes. Our aim was to analyse and compare the designs of different 3D printed cups from multiple manufacturers (Delta TT, Trident...
Published in Journal of the Brazilian Society of Mechanical Sciences and Engineering
Parallel manipulator robots are widely used in a large number of applications because they provide important advantages in terms of superior speeds and accelerations, high stiffness and good dynamic performance. In additive manufacturing (AM), this kind of kinematic structures is being increasingly explored to develop new curved and multi-direction...
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Published in International journal of pharmaceutics
Here we report the first use of an additive manufacturing (AM) technique based on high pressure material jetting of molten thermoplastic for the fabrication of dapivirine (DPV) loaded vaginal rings (VRs). The VRs are compared to those produced conventionally using injection molding (IM). VRs (outer diameter 54.0 mm, cross-sectional diameter 4.0 mm)...
Published in Mechanics of Advanced Materials and Modern Processes
In the work, on the basis of the analysis of publications, existing approaches to the numerical modeling of additive processes of product formation are shown. The work itself is devoted to the study of the influence of parameters of the process of surfacing wire materials on the formation of residual deformations in parts. A mathematical formulatio...
