International Journal of Engineering and Management Sciences (DE-journals)

Állandó link (URI) ehhez a gyűjteményhez

https://hdl.handle.net/2437/272383
A folyóirat a DE-journals platformon keresztül jelenik meg és a https://ojs.lib.unideb.hu/IJEMS címen érhető el.

Böngészés

International Journal of Engineering and Management Sciences (DE-journals) Tárgyszó szerinti böngészés "3D printing"

Megjelenítve 1 - 4 (Összesen 4)
  • Nincs kép
    TételSzabadon hozzáférhető
    Additív gyártástechnológia alkalmazása szélcsatornás szimulációkhoz
    (2022-12-11) Pálfi, Tamás; Ficzere, Péter
    The current economical situation requires aircraft operators to start organizing their  activity in the direction of carbon neutrality using innovative solutions. The goal of present study is to desing a brand new wingtip device using 3D printing which helps reducing aerodynamical drag, leading to fuel efficiency and less carbon emission with its innovative shape.
  • Nincs kép
    TételSzabadon hozzáférhető
    Aktív hűtés hatásainak vizsgálata 3D nyomtatás esetén
    (2022-10-14) Ficzere, Péter
    3D printing is an increasingly widespread manufacturing process. With the development of machines and materials, the technology is becoming more accessible and easier to use. However, the technology's specificities mean that it requires knowledge of manufacturing technology. In some cases, it is necessary to solidify the freshly deposited layers as soon as possible in the event of large overhangs. This can be achieved by active cooling, which in turn can affect the material properties of the part. This research investigates the effects of active cooling during production.   
  • Nincs kép
    TételSzabadon hozzáférhető
    Development of a Small-Scale Plastic Recycling Technology and a Special Filament Product for 3D Printing
    (2019-03-03) Oussai , Alaeddine; Bártfai, Zoltán; Kátai, László; Szalkai, István
    In our days, the fight against pollution has become a real challenge for the state. recycling is one of the solutions that is adopted in several nations to reduce the rate of plastic discarded in nature. The amount of plastic waste has been increasing for decades contributing to the environmental pollution that is one of the most serious problem of the mankind. according to the statistics not only the household plastic waste, but the industry discharge is increasing because the utilization of plastic as a raw material is more and more extending. plastic can be found in a lot of products, huge number of bottles, plastic bags, computers, auto parts are sold every day. The current applications for using recycled plastics in fabrication and design are fairly limited, on a small scale, plastics (such as abs, HDPe1, or Pe2t) are shredded and formed into pellets, and then either extruded into lament to be used in existing 3d printers, or injection molded into small parts and pieces of larger components. at a large scale, recycled HDpE is melted into sheets and either used directly as sheets in construction, or then heat formed from a sheet into components for construction. these methods of fabrication using recycled plastics are the norm because of their straightforward processes. nevertheless, each method leaves some complexity to be desired. This paper we study the types of plastics and diagnose the pollution caused by the latter. this allowed us to design and size a recycling station of plastic into filaments for three-dimensional printers. this station which will contribute to the fight against pollution. the station consists of two machines for grinding of the plastic and the other for the extrusion of the desired filaments. we were able to make a theoretical academic study on both machines and also we designed with solidworks 2015. The theoretical study is spread of the mechanical calculations necessary to the design and validation of the structure using the tools. as the prospect of this project, we want to complete the achievement of this station while completing the crusher and extruder mechanically. then switch to electric and electronic parts (introduction of engines, sensors and wiring...). In the case of waste plastics that are recyclable and reusable. the most widely used are polyethylene terephthalate (pet, used for synthetic fibers and water bottles), and second high-density polyethylene (hdpe, used for jugs, bottle caps, water pipes).
  • Nincs kép
    TételSzabadon hozzáférhető
    Utilization of 3D Printing in Replacement of Basic Plastic Workpieces
    (2021-09-27) Kristály , Álmos; Ficzere, Péter
    In the experiment, a 3D printed cogwheel is made using the FDM technology to replace a broken part in a sewing machine. The aim of the project is to examine if a 3D model can be created and manufactured using only entry-level technical knowledge and tools. By the end of the article, it will be apparent that creating functioning plastic parts with a hobby 3D printer and basic CAD experience is very much possible.