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Wyszukujesz frazę "selective laser melting" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
The influence of post-process operations on the mechanical properties of titanium alloy Ti-6Al-7Nb, produced by selective laser melting
Autorzy:
Karoluk, M.
Chlebus, E.
Powiązania:
https://bibliotekanauki.pl/articles/1190025.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
selektywne spiekanie laserowe
SLM
stop tytanu
Ti-6Al-7Nb
selective laser melting
post-process operations
titanium alloy
Opis:
Even though selective laser melting (SLM) has been available for more than a decade, during few last years the interest in this technology has grown extremely. SLM technology allows to fabricate fully functional and complex metal objects, layer by layer, via selective melting of material using laser beam. However, producing object by melting thin layers of material causes conditions of fast heat removal. This phenomenon leads to equilibrium microstructures, accompanied by the residual stresses which cause the decrease of mechanical properties. The following paper presents the result of research in the field of the influence of the post-process operations, such as machining and heat treatment, on the mechanical properties of alloy Ti-6Al-7Nb build by SLM.
Źródło:
Interdisciplinary Journal of Engineering Sciences; 2015, 3, 1; 16--19
2300-5874
Pojawia się w:
Interdisciplinary Journal of Engineering Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New lumbar disc endoprosthesis applied to the patient’s anatomic features
Autorzy:
Mróz, A.
Skalski, K.
Walczyk, W.
Powiązania:
https://bibliotekanauki.pl/articles/307179.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
analiza MES
obrazowanie medyczne
SLM
badania tarciowo-zużyciowe
finite element analysis
medical imaging
total disc replacement
selective laser melting
friction and wear tests
Opis:
Purpose: The paper describes the process of designing, manufacturing and design verification of the intervertebral of a new structure of lumbar disc endoprosthesis – INOP/LSP.1101. Methods: Modern and noninvasive medical imagining techniques, make it possible to record results of tests in a digital form, which creates opportunities for further processing. Mimics Innovation Suite software generates three-dimensional virtual models reflecting the real shape and measurements of components of L4-L5 spinal motion segment. With the use of 3D Print technique, physical models of bone structures of the mobile segment of the spine as well as the INOP/LSP.1101 endoprosthesis model were generated. A simplified FEA analysis of stresses in the endoprosthesis was performed to evaluate the designed geometries and materials of the new structure. Results: The endoprosthesis prototype was made of Co28Cr6Mo alloy with the use of selective laser technology. The prototypes were subject to tribological verification with the use of the SBT-03.1 spine simulator. Conclusions: The structure of the endoprosthesis ensures a full reflection of its kinematics, full range of mobility of the motion segment in all anatomical planes as well as restoration of a normal height of the intervertebral space and curvature of the lordosis. The results of the tribological tests confirmed that SLM technology has the potential for production of the human bone and jointendoprostheses.
Źródło:
Acta of Bioengineering and Biomechanics; 2015, 17, 2; 25-34
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deposition of phosphate coatings on titanium within scaffold structure
Autorzy:
Trybuś, B.
Zieliński, A.
Beutner, R.
Seramak, T.
Scharnweber, D.
Powiązania:
https://bibliotekanauki.pl/articles/306537.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
powłoka fosforanowa
osadzanie elektrochemiczne
stal szlachetna
topnienie
phosphate coatings
electrochemical deposition
stainless steel
selective laser
melting
titanium
Opis:
Purpose. Existing knowledge about the appearance, thickness, and chemical composition of 37 phosphate coatings on titanium inside porous structures is insufficient. Such knowledge is 38 important for the design and fabrication of porous implants. 39 Methods. Metallic scaffolds were fabricated by selective laser melting of 316L stainless steel 40 powder. Phosphate coatings were deposited on Ti sensors placed either outside the scaffolds 41 or in the holes in the scaffolds. The electrochemically-assisted cathodic deposition of 42 phosphate coatings was performed under galvanostatic conditions in an electrolyte containing 43 the calcium and phosphate ions. The phosphate deposits were microscopically investigated; 44 this included the performance of mass weight measurements and chemical analyses of the content of Ca2+ and PO4 2‒ 45 ions after the dissolution of deposits. 46 Results. The thicknesses of the calcium phosphate coatings were about 140 and 200 nm for 47 isolated titanium sensors and 170 and 300 nm for titanium sensors placed inside pores. 48 Deposition of calcium phosphate occurred inside the pores up to 150 mm below the scaffold 49 surface. The deposits were rich in Ca, with a Ca/P ratio ranging between 2 and 2.5. 50 Conclusions. Calcium phosphate coatings can be successfully deposited on a Ti surface 51 inside a model scaffold. An increase in cathodic current results in an increase in coating 52 thickness. Any decrease in the cathodic current inside the porous structure is slight. The 53 calcium phosphate inside the pores has a much higher Ca/P ratio than that of stoichiometric 54 HAp, likely due to a gradual increase in Ca fraction with distance from the surface.
Źródło:
Acta of Bioengineering and Biomechanics; 2017, 19, 2; 65-72
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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