Konstantinos Kitsakis

Verified

Konstantinos verified their affiliation via an institutional email.

Learn more

Verified

Konstantinos verified their affiliation via an institutional email.

Learn more

• Master of Science
• PhD candidate at University of Thessaly

This work investigates the effect of 3D-printing parameters on surface roughness in polylactic acid printed material by adopting Taguchi's design of experiments approach. The control parameters under study were: number of shells, printing temperature, infill rate, and printing pattern. As the response, mean surface roughness (Ra) was selected. The...

The present work is focused on the direct manufacturing of a hand splint using free-open access software and a low-cost three-dimensional printer (3DP). The hand digital model was created using panoramic photos by a common mobile phone camera. The photos were used as input to the "3DF-Zephyr" free software for creating the hand surface model. Then,...

The dimensional accuracy of a simple benchmark specimen fabricated with fused filament fabrication (FFF) route is discussed in the present study. FFF is a low-cost 3D-printing process that builds complicated parts by extruding molten plastic. Experimental method was designed according to Taguchi robust design based on an orthogonal array with nine...

Nowadays computers have invaded all levels of production, thus improving the quality and quantity of products. Digital manufacturing involves all tools for design, simulate, and programming machine tools in order to manufacture prototypes or tools for production use. This project is a case study of digital manufacturing for prototyping of an intern...

This article is about how the technology of low cost 3D printing can be used for the creation of a two-stroke combustion engine model. It describes the designing of each part with Solidworks, the programing of a low cost 3D printer (Fused Filament Fabrication-FFF) and the final assembly of the parts. The results as well as advantages and disadvanta...

The production of extruded polyethylene films rods, tubes and pipes is a typical industrial process that has been extensively investigated over many years. In this study the extrusion of High Density Polyethylene (HDPE) tubes was simulated by using the 3D finite element simulation software StarCCM+®. The simulation was applied in order to examine t...

The present paper concerns with the analysis and the optimization of the main cutting force (Fc) during turning of Ti-6Al-4V ELI titanium alloy under dry cutting condition by applying either full or fractional experimental design. The main cutting variables (spindle speed, feed rate and depth of cut) were treated as inputs in whilst the main cuttin...

International Tolerance (IT) grade approach was applied for tolerance assessment of the PolyJet Direct 3D printing process (PJD-3DP). Linear sizes of parallel opposite surfaces as well as the diameter of cylinders were measured eight (8) times each one, at eight (8) different test parts which were, all of them, printed using the same optimized para...

Low cost 3D printing' is a terminology that referred to the fused filament fabrication (FFF) technique, which constructs physical prototypes, by depositing material layer by layer using a thermal nozzle head. Nowadays, 3D printing is widely used in medical applications such as tissue engineering as well as supporting tool in diagnosis and treatment...

In this study we investigate the dimensional accuracy of 3D printed objects and define the International Tolerance (IT) Grade for the linear sizes of parallel opposite surfaces and the diameter of a cylinder. Eight (8) exact parts were printed by an Objet Eden250 3D printer using the Multi Jet Modelling (MJM) process. The printed objects were measu...

The current study investigates the surface roughness of models produced by a 3D printer. All models were produced by addition of solid material, a process called fused filament fabrication (FFF): initial extrusion into plastic filament, second extrusion and trace-binding during the 3D printing process. A low cost 3D printer Ultimaker was used to pr...

'Low cost 3D printing' is a terminology that referred to the fused filament fabrication (FFF) technique, which constructs physical prototypes, by depositing material layer by layer using a thermal nozzle head. Nowadays, 3D printing is widely used in medical applications such as tissue engineering as well as supporting tool in diagnosis and treatmen...

The current study investigates the surface roughness of models produced by a 3D printer. All models were produced by addition of solid material, a process called fused filament fabrication (FFF): initial extrusion into plastic filament, second extrusion and trace-binding during the 3D printing process. A low cost 3D printer Ultimaker was used to pr...

In this study we investigate the dimensional accuracy of 3D printed objects and define the International Tolerance (IT) Grade for the linear sizes of parallel opposite surfaces and the diameter of a cylinder. Eight (8) exact parts were printed by an Objet Eden250 3D printer using the Multi Jet Modelling (MJM) process. The printed objects were measu...

Book of Abstracts/ Abstract: 3D printing, a section of Additive Manufacturing, is the manufacturing process of three-dimensional objects by printing or adding very thin layers of material. It is already widely used in Rapid Prototyping, Rapid Manufacturing, Health, Dental, Orthopedics, Jewelry and Architecture while its usage in other areas is con...

Full paper at: http://www.inase.org/library/2015/crete/bypaper/AME/AME-23.pdf Abstract: Additive Manufacturing (AM), also called 3D Printing, is a process where a three dimensional physical part is created by printing or adding very thin layers of material on top of each other, until the part is complete. The parts are created with a computer aided...

Full paper at: http://www.inase.org/library/2015/crete/bypaper/AME/AME-15.pdf

Full text at: http://www.wseas.us/e-library/conferences/2015/Salerno/IMAS/IMAS-14.pdf Abstract: Fused Filament Fabrication (FFF) is a manufacturing technique commonly used for 3D Printing. In order to satisfy functional requirements, FFF prototypes should have acceptable accuracy. In the current study the process parameters effects influencing the...

Book of Abstracts at: http://www.fabe.gr/el/conferences/2nd-fabe-2015 Abstract: Three-dimensional (3D) printing comprises a number of manufacturing techniques applied for the fabrication of 3D Objects. Nowadays, 3D printing is widely used in medical applications such as tissue engineering as well as supporting tool in diagnosis and treatment in Neu...

We present a simulation model designed to describe the daily-seasonal variation of solar physical phenomena and tested with the aid of a building test cell. The energy and temperatures have been calculated by means of a physical modelling of various energy-conversion and transport mechanisms (solar radiation, heat gains, etc.). This is supplemented...