Fused filament fabrication (FFF) combined with debinding and sintering could be an economical process for three-dimensional (3D) printing of metal parts. In this paper, compounding, making, FFF processing feedstock material 55% vol. 17-4PH stainless steel powder in a multicomponent binder system are presented. The experimental part the paper encompasses central composite design optimization most significant 3D parameters (extrusion temperature, flow rate multiplier, layer thickness) to...

This work investigates the methodology of producing a 3D-printed microreactor from acrylic resin by PolyJet Matrix process. The technology employs different materials or their combinations to generate structures, small ones complex geometries, with material properties. Experimental and numerical methods served for evaluation geometry production its hydrodynamic characterization. operational limits single-phase flow in microchannels, further improvements possible applications were assessed based on

We describe a novel experimental device, the VaMa (Vatavuk and Marić) artificial intraocular lens (IOL) capsule, method that enables all IOL types to be implanted in bag. present application of device procedure patients with aphakia native capsule damage without efficient capsular support. The facilitate exchange due refractive errors and, case their invention, implementation superior IOLs future. postoperative results after implantation along three are promising, significant visual...

The present study is devoted to the quantitative characterisation of interlayer bonding in unidirectional carbon fibre reinforced thermoplastic laminates produced by automated tape placement with in-situ consolidation (ATPisc). Two different manufacturing protocols were applied produce that further characterised using quasi-static mode I double cantilever beam (DCB) test. Regardless approach, exhibited multiple cracking accompanied bridging during testing, which affected main mid-plane crack...

Fused filament fabrication (FFF) is currently one of the most popular additive manufacturing processes due to its simplicity and low running material costs. Support structures, which are necessary for overhanging surfaces during production, in cases need be manually removed as such, they become waste material. In this paper, experimental approach utilised order assess suitability recycling support structures into recycled FFF process. Mechanical properties standardized specimens made from...

Computer simulation of injection moulding process is a powerful tool for optimisation moulded part geometry, mould design and processing parameters. One the most frequent faults parts their warpage, which result uneven cooling conditions in cavity as well after ejection from down to environmental temperature. With computer it possible predict potential areas warpage apply remedies compensate/minimize value warpage. The paper presents application software Moldex 3D optimising thermoplastic casing.

The influence of 3D printing parameters on compressive properties is an important factor in the application additive manufacturing processes for products subjected to loads use. In this study, strength and modulus acrylonitrile/butadiene/styrene (ABS) test specimens fabricated using fused deposition modeling (FDM) process were investigated with aim producing high-heeled shoes women. experimental part study includes a central composite design optimize main (layer thickness, infill density,...

Additive manufacturing processes are of great importance for the development modern production, which is why much research being carried out to determine or improve properties 3D printed products depending on desired application. In this work, abrasion resistance acrylonitrile/butadiene/styrene (ABS) test specimens was investigated using fused deposition modeling (FDM) production shoe heels bottoms. The performed Martindale wear method ABS colored with disperse dyes in depletion process and...

Postupci aditivne proizvodnje značajni su u razvoju suvremene stoga se provode mnoga istraživanja kako bi utvrdila ili poboljšala svojstva 3D ispisanih tvorevina skladu sa željenom primjenom. U radu je ispitana otpornost na habanje ispitnih tijela izrađenih iz akrilonitril/butadien/stirena (ABS) postupkom taložnog očvršćivanja (e. Fused Deposition Modeling – FDM) s ciljanom primjenom izrade potpetica cipela donjišta obuće. Ispitivanje provedeno nahabavanja prema Martindaleu ispisanim ABS...

Purpose This paper aims to emphasize compared experimental analysis of influence hybrid and classic moulds on the properties moulded parts processing parameters. Such enables optimization parameters in case mould. Design/methodology/approach Representative part appropriate have been designed manufactured. The work contains a screening design main central composite for analysing performance both properties. In mould numerical was used. Findings It found that can be successfully applied...

Abstract With the broader industrial application of Additive Manufacturing (AM), designers are facing new challenges in conceptual design for AM. To better understand problematic, authors organised a workshop with six experts The paper presents results conducted and discusses current future trends research on

According to the great impact of additive technology on development modern industry, a lot research is being done obtain 3D printed parts with better properties. This extremely important because there are no scientific papers in field post dyeing acrylonitrile/butadiene/styrene (ABS) parts. The experiment was carried out using disperse dyes ABS specimens. obtained coloration specimens primary colors (yellow, red, and blue) specified dyestuff concentration range evaluated an objective CIELab...

Manufacturing of customized three-dimensional (3D)-printed cranioplastic implant after decompressive craniectomy has been introduced to overcome the difficulties intraoperative molding. The authors present and discuss technique, which consists prefabrication silicone mold using additive manufacturing, also known as 3D printing, polymethyl methacrylate (PMMA) casting.To reconstruct a large bone defect sustained due traumatic brain injury (TBI), 3D-printed prefabricated template was used...

Decomposition of organic matter is sensitive to air flow, humidity and temperature, thus appropriate conditions are needed for effective composting which achieved through a correct composter design. The paper focuses on simulation analysis the injection molding process bottom part composter. Contemporary machines require fine tuning ensure successful mold filling attainment satisfactory product quality. Addressing plastic design from manufacturing perspective helps ease challenges related...

Warpage of the injection moulded parts is one most common defects after demoulding, which intensively present in thin-walled or with non-uniform wall thickness. The level warpage can be reduced by optimizing mould tempering system phase design, moulding parameters and recently shape cavity elements geometry – so-called inverse contouring. Computer simulation process show part ejection from mould, but it will not allow detailed measuring critical measures deviations. Detailed analysis...

In case of small-batch production, applications classic technologies and tools, for e.g. injection moulding moulds are not competitive. Application additive (AT) direct production finally parts can partially reduce deficiencies approach, but there limited number available materials. Potential solution is application AT in so called bridge from originally requested material final part. This paper presents PolyJet process its possible polymer small quantity the moulded together with design...