A5045158354- Additive Manufacturing and 3D Printing Technologies
- Advanced machining processes and optimization
- Metal and Thin Film Mechanics
- Injection Molding Process and Properties
- Advanced Surface Polishing Techniques
- Manufacturing Process and Optimization
- High-Temperature Coating Behaviors
- Advanced ceramic materials synthesis
- Metal Alloys Wear and Properties
- 3D Printing in Biomedical Research
- Aluminum Alloys Composites Properties
- biodegradable polymer synthesis and properties
- Innovations in Concrete and Construction Materials
- Aluminum Alloy Microstructure Properties
- Mechanical Behavior of Composites
- Diamond and Carbon-based Materials Research
- Bone Tissue Engineering Materials
- Advanced Machining and Optimization Techniques
- Additive Manufacturing Materials and Processes
- Advanced materials and composites
- Intermetallics and Advanced Alloy Properties
- Hydraulic and Pneumatic Systems
- Advanced Welding Techniques Analysis
- Tribology and Wear Analysis
- Electrospun Nanofibers in Biomedical Applications
International Hellenic University
2020-2024
Aristotle University of Thessaloniki
1999-2023
University of Thessaly
2020
General Hospital of Serres
2006-2018
Technological Educational Institute of Central Macedonia
2007-2018
In the material extrusion (MEX) Additive Manufacturing (AM) technology, layer-by-layer nature of fabricated parts, induces specific features which affect their quality and may restrict operating performance. Critical indicators with distinct technological industrial impact are surface roughness, dimensional accuracy, porosity, among others. Their achieving scores can be optimized by adjusting 3D printing process parameters. The effect six (6) control parameters, i.e., raster deposition...
Abstract Bioabsorbable and biodegradable composites have experienced rapid growth, owing to their high demand in the biomedical sector. Polymer-cellulose nanocrystal (CNC) compounds were developed using a medical-grade poly (ε-caprolactone) (PCL) matrix improve stiffness load-bearing capacity of pure PCL. Five PCL/CNCs filament grades melt-extruded, pelletized, fed into an industrial bioplotter fabricate specimens. To assess effects CNCs on PCL, 14 tests conducted, including rheological,...
Both energy efficiency and robustness are popular demands for 3D-printed components nowadays. These opposing factors require compromises. This study examines the effects of seven general control variables on compressive responses polyamide (PA6) material extrusion (MEX) 3D printed samples. Nozzle Temperature, Layer Thickness, Orientation Angle, Raster Deposition Printing Speed, Bed Infill Density were studied. An L27 orthogonal array was compiled with five replicas. A total 135 trials...
Sustainability and energy efficiency of additive manufacturing (AM) is an up-to-date industrial request. Likewise, the claim for 3D-printed parts with capable mechanical strength remains robust, especially polymers that are considered high-performance ones, such as polycarbonates in material extrusion (MEX). This paper explains impact seven generic control parameters (raster deposition angle; orientation layer thickness; infill density; nozzle temperature; bed printing speed) on consumption...
The cost-effectiveness and the environmental impact of Additive Manufacturing (AM) are nowadays two hottest process-related industrial research topics. Energy efficiency is a strong claim, so demand for durable functional 3D-printed workpieces. These contradictory aspects usually require flexibility compromises. Especially Material Extrusion (MEX) 3D printing, plurality control parameters makes such optimizations complicated. This explores effect seven generic machine-independent factors...
Abstract Friction stir welding (FSW) as a process for polymers is growing steadily, owing to its inheren1t advantages. The developed forces during the joining are sensitive parameters used and affect quality of weld in terms voids defect formation. This study focuses on analysis effects four FSW polycarbonate (PC) 4 mm thick sheets. porosity produced seams was investigated with micro-computed tomography. dimensional deviation (top surface retreat) also assessed same method. were further...
In the current study, nanocomposites of medical-grade polyamide 12 (PA12) with incorporated copper (I) oxide (cuprous oxide-Cu
In this study, we successfully address a significant research and engineering gap by quantitatively assessing the impact of varying compressive loading rates on mechanical behavior four popular thermoplastic polymers in material-extrusion-based (MEX) 3D printing. Raw powders polycarbonate (PC), polyethylene terephthalate glycol (PETG), polymethyl methacrylate (PMMA), polyurethane (TPU) were processed through melt extrusion, filaments used to 3D-print test samples. For completeness,...
Abstract Herein, a research and engineering gap, i.e., the quantitative determination of effects compressive loading rate on response most popular polymers in Material Extrusion (MEX) Additive Manufacturing (AM) is successfully filled out. PLA (Polylactic Acid), ABS (Acrylonitrile Butadiene Styrene), PP (Polypropylene), PA12 (Polyamide 12) raw powders were evaluated melt-extruded to produce fully documented filaments for 3D printing. Compressive specimens after ASTM-D695 standard then...
The elevator industry is constantly expanding creating an increased demand for the integration of high technological tools to increase efficiency and safety. Towards this direction, Additive Manufacturing (AM), especially metal AM, one technologies that could offer numerous competitive advantages in production industrial parts, such as complex geometry, manufacturability high-strength alloys, etc. In context, present study has 3D designed, printing manufactured, evaluated novel bioinspired...
In this study, titanium nitride (TiN) was selected as an additive to a high-density polyethylene (HDPE) matrix material, and four different nanocomposites were created with TiN loadings of 2.0–8.0 wt. % 2 increase step between them. The mixtures made, followed by the fabrication respective filaments (through thermomechanical extrusion process) 3D-printed specimens (using material (MEX) technique). manufactured subjected mechanical, thermal, rheological, structural, morphological testing....
The machinability in turning mode of three lead-free brass alloys, CuZn42 (CW510L), CuZn38As (CW511L) and CuZn36 (C27450) was evaluated comparison with a reference free-cutting leaded CuZn39Pb3 (CW614N), as far the quality characteristics, i.e., cutting force surface roughness, were concerned. A design experiments (DOE) technique, according to Taguchi L16 orthogonal array (OA) methodology, well analysis variance (ANOVA) employed order identify critical-to-machinability parameters obtain...
In this work, the effect of silicon carbide (carborundum, SiC), as a boosting agent mechanical response polycarbonate (PC) polymer, was investigated. The work aimed to fabricate nanocomposites with an improved performance and further expand utilization 3D printing in fields requiring enhanced material response. were produced by thermomechanical process various SiC concentrations order evaluate filler loading enhancement. samples printed extrusion (MEX) method. Their characterized, following...
This study aimed to investigate the potential of antimony-doped tin oxide (ATO) as a reinforcing agent for polyamide 12 (PA12) in 3D printing by examining four mixtures with varying ATO concentrations (2.0 8.0 wt.%, 2.0 wt.% interval). These were used fabricate filaments manufacturing specimens through material extrusion method. The mechanical properties resulting PA12/ATO composites and PA12 pure samples evaluated tensile, Charpy impact, flexural, microhardness tests. Additionally,...
Additive Manufacturing (AM) can provide customized parts that conventional techniques fail to deliver. One important parameter in AM is the quality of parts, as a result material extrusion 3D printing (3D-P) procedure. This be very defense-related applications, where optimum performance needs guaranteed. The Polyetherimide 3D-P specimens was examined by considering six control parameters, namely, infill percentage, layer height, deposition angle, travel speed, nozzle, and bed temperature....