Manufacturing of fine-structured 3D porous filter elements by selective laser melting

Yadroitsev, Igor; Shishkovsky, Igor; Bertrand, Ph.; Smurov, I.

doi:10.1016/j.apsusc.2008.07.154

Cited by 180 publications

(78 citation statements)

References 11 publications

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“…Porous structures have been used in the past as catalyst for various processes. For higher efficiency, it is optimal to have the highest surface area per unit volume (Yadroitsev et al, 2009). The small globules in the LENS™ processes structure provide an increase in surface area, as well as extra filtration ability if used for such an application.…”

Section: Morphology Of Structurementioning

confidence: 99%

“…Many of the other AM processes used to make scaffolds also can make designed porosity with internal channel structures that make a non-direct path through the sample. It is a large advantage of other AM systems that they have the ability to make designed porosity then make a scaffold almost exactly as the design (Bose et al, 1999;Yadroitsev et al, 2009). The channels then obstruct direct flow, increasing filtering capability and surface area of the structure.…”

Section: Morphology Of Structurementioning

confidence: 99%

“…LENS™ can be used to make porous structure by designing porosity as well as controlling process parameters. In the past, direct metal laser sintering (Khaing et al, 2001;Traini et al, 2008), direct laser forming (Hollander et al, 2006;Harrysson et al, 2008), select laser melting/select laser sintering (Vamsi Krishna et al, 2008;Yadroitsev et al, 2009), electron beam melting (Heinl et al, 2007;Parthasarathy et al, 2010;Cheng et al, 2012;de Peppo et al, 2012), multistage lost wax investment casting (Ryan et al, 2008), and 3D fiber depositing system (Li et al, 2006(Li et al, , 2007 have been used to make porous Ti6Al4V components. All these methods have their advantages and disadvantages when compared to each other.…”

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confidence: 99%

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Laser Engineering Net Shaping of Microporous Ti6Al4V Filters

Gualtieri

Bandyopadhyay

2016

Front. Mech. Eng.

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In many applications, porous metal structures are necessary for proper and optimal function. Yet, these structures can be difficult to build. It is especially difficult if the pore size desired is very fine or on the microscale. For this reason, additive manufacturing processes have been looked at to build these structures. In this study, Laser Engineering Net Shaping (LENS™) processing was experimented with processing interconnected microporous structures. Using Ti6Al4V and only changing processing parameters, porous structures were created having porosity ranging from 21.5 to 15.4%. The microstructure proved to be that of traditional laser processed Ti6Al4V parts. Compression test of these samples showed that the ultimate compressive strength varied from 645 to 556 MPa. Overall, LENS™ proved to be a viable method to make unique interconnected microporous structures that could be easily added to any build without having to change the design.

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Section: Morphology Of Structurementioning

confidence: 99%

Section: Morphology Of Structurementioning

confidence: 99%

mentioning

confidence: 99%

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Laser Engineering Net Shaping of Microporous Ti6Al4V Filters

Gualtieri

Bandyopadhyay

2016

Front. Mech. Eng.

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“…При этом порошок, пред-варительно нанесенный на подложку (предыдущий слой), плавится не целиком, а избирательно, в соот-ветствии с компьютерной моделью объекта [4][5][6].…”

Section: № 1 2013unclassified

Comparison of properties of steel–TiC materials produced by laser process and powder metallurgy

Marants¹,

Sentyurina²,

Yadroitsev³

et al. 2015

Izv. vuzov, Porošk. metall. funkc. pokryt.

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Проведено сравнение свойств материалов сталь СПН14А7М5 -карбид титана (0-30 об.% TiC), полученных лазерной наплавкой, лазерным спе-канием и способом порошковой металлургии (прессование и спекание). Исследованы процессы структурообразования, сопоставлена твер-дость разных образцов. Установлена возможность создания материалов с улучшенными характеристиками с помощью лазерных техноло-гий, в частности, поверхностного упрочнения изделий при использовании лазерной наплавки. Ключевые слова: лазер, наплавка, спекание, плавление, сталь, карбид титана, смесь, мощность, микроструктура, твердость, прочность.Comparison of the properties of materials: SPN14A7M5 steel -titanium carbide (0-30 vol.% TiC) produced by laser building-up, laser sintering, and powder metallurgy (compaction and sintering) has been carried out. Structure formation processes are investigated; the hardness of different samples is compared. The possibility of material production with improved characteristics by means of laser processing, in particular, of surface strengthening of products when using the laser building-up is established.

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“…The parts manufactured through SLM have the characteristics of high density, good mechanical properties, high dimension accuracy (error of part dimension is less than 0.1 mm), direct and practical usability without or with simple postprocessing. Thus SLM is better than the traditional techniques in part design, making time, and so forth and has been widely applied in industries of aerospace, medical treatment, automobiles, dies, and so forth [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Ti-6Al-4V Octahedral Porous Material Unit Formed by Selective Laser Melting

Sun

Yang

Wang

2012

Advances in Mechanical Engineering

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The Ti-6Al-4V octahedral porous material unit is designed to calculate its load. In this paper, ANSYS is adopted for the load simulation of the unit. And a simplified model of dimensional theoretical calculation is established, by which the analytical equation of the fracture load is obtained and the calculation of the load of Ti-6Al-4V is completed. Moreover, selective laser melting is adopted in processing the Ti-6Al-4V porous material unit. The experimental value of fracture load of this material is obtained through compression experiment. The results show that the simulation curves approximate the variation tendency of the elastic deformation of the compression curves; the curves of theoretical calculation approximate the general variation tendency; and the experimental value of fracture load is very close to the theoretical value. Therefore, the theoretical prediction accuracy of fracture load is high, which lays the foundation for the mechanical properties of the octahedral porous material.

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Manufacturing of fine-structured 3D porous filter elements by selective laser melting

Cited by 180 publications

References 11 publications

Laser Engineering Net Shaping of Microporous Ti6Al4V Filters

Laser Engineering Net Shaping of Microporous Ti6Al4V Filters

Comparison of properties of steel–TiC materials produced by laser process and powder metallurgy

Mechanical Properties of Ti-6Al-4V Octahedral Porous Material Unit Formed by Selective Laser Melting

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