Mechanical Properties of AISI 316L Lattice Structures via Laser Powder Bed Fusion as a Function of Unit Cell Features
The growth of additive manufacturing processes has enabled the production of complex and smart structures. These fabrication techniques have led research efforts to focus on the application of cellular materials, which are known for their thermal and mechanical benefits. Herein, we studied the mecha...
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MDPI AG
2023-01-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/3/1025 |
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| author | Luis H. Olivas-Alanis Antonio Abraham Fraga-Martínez Erika García-López Omar Lopez-Botello Elisa Vazquez-Lepe Enrique Cuan-Urquizo Ciro A. Rodriguez |
| author_facet | Luis H. Olivas-Alanis Antonio Abraham Fraga-Martínez Erika García-López Omar Lopez-Botello Elisa Vazquez-Lepe Enrique Cuan-Urquizo Ciro A. Rodriguez |
| author_sort | Luis H. Olivas-Alanis |
| collection | DOAJ |
| description | The growth of additive manufacturing processes has enabled the production of complex and smart structures. These fabrication techniques have led research efforts to focus on the application of cellular materials, which are known for their thermal and mechanical benefits. Herein, we studied the mechanical behavior of stainless-steel (AISI 316L) lattice structures both experimentally and computationally. The lattice architectures were body-centered cubic, hexagonal vertex centroid, and tetrahedron in two cell sizes and at two different rotation angles. A preliminary computational study assessed the deformation behavior of porous cylindrical samples under compression. After the simulation results, selected samples were manufactured via laser powder bed fusion. The results showed the effects of the pore architecture, unit cell size, and orientation on the reduction in the mechanical properties. The relative densities between 23% and 69% showed a decrease in the bulk material stiffness up to 93%. Furthermore, the different rotation angles resulted in a similar porosity level but different stiffnesses. The simulation analysis and experimental results indicate that the variation in the strut position with respect to the force affected the deformation mechanism. The tetrahedron unit cell showed the smallest variation in the elastic modulus and off-axis displacements due to the cell orientation. This study collected computational and experimental data for tuning the mechanical properties of lattice structures by changing the geometry, size, and orientation of the unit cell. |
| first_indexed | 2024-03-11T09:36:39Z |
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| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T09:36:39Z |
| publishDate | 2023-01-01 |
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| record_format | Article |
| series | Materials |
| spelling | doaj.art-8d75ac4dd2c544d5b179fb937d0d3b1e2023-11-16T17:16:04ZengMDPI AGMaterials1996-19442023-01-01163102510.3390/ma16031025Mechanical Properties of AISI 316L Lattice Structures via Laser Powder Bed Fusion as a Function of Unit Cell FeaturesLuis H. Olivas-Alanis0Antonio Abraham Fraga-Martínez1Erika García-López2Omar Lopez-Botello3Elisa Vazquez-Lepe4Enrique Cuan-Urquizo5Ciro A. Rodriguez6Tecnologico de Monterrey, School of Engineering and Sciences, Av. Eugenio Garza Sada 2501, Monterrey 64849, MexicoTecnologico de Monterrey, School of Engineering and Sciences, Av. Eugenio Garza Sada 2501, Monterrey 64849, MexicoTecnologico de Monterrey, School of Engineering and Sciences, Av. Eugenio Garza Sada 2501, Monterrey 64849, MexicoTecnologico de Monterrey, School of Engineering and Sciences, Av. Eugenio Garza Sada 2501, Monterrey 64849, MexicoTecnologico de Monterrey, School of Engineering and Sciences, Av. Eugenio Garza Sada 2501, Monterrey 64849, MexicoLaboratorio Nacional de Manufactura Aditiva y Digital MADiT, Autopista al Aeropuerto, Km. 9.5, Calle Alianza Norte 100, Parque PIIT, Apodaca 66629, MexicoTecnologico de Monterrey, School of Engineering and Sciences, Av. Eugenio Garza Sada 2501, Monterrey 64849, MexicoThe growth of additive manufacturing processes has enabled the production of complex and smart structures. These fabrication techniques have led research efforts to focus on the application of cellular materials, which are known for their thermal and mechanical benefits. Herein, we studied the mechanical behavior of stainless-steel (AISI 316L) lattice structures both experimentally and computationally. The lattice architectures were body-centered cubic, hexagonal vertex centroid, and tetrahedron in two cell sizes and at two different rotation angles. A preliminary computational study assessed the deformation behavior of porous cylindrical samples under compression. After the simulation results, selected samples were manufactured via laser powder bed fusion. The results showed the effects of the pore architecture, unit cell size, and orientation on the reduction in the mechanical properties. The relative densities between 23% and 69% showed a decrease in the bulk material stiffness up to 93%. Furthermore, the different rotation angles resulted in a similar porosity level but different stiffnesses. The simulation analysis and experimental results indicate that the variation in the strut position with respect to the force affected the deformation mechanism. The tetrahedron unit cell showed the smallest variation in the elastic modulus and off-axis displacements due to the cell orientation. This study collected computational and experimental data for tuning the mechanical properties of lattice structures by changing the geometry, size, and orientation of the unit cell.https://www.mdpi.com/1996-1944/16/3/1025additive manufacturinglaser powder bed fusioncellular materialsstiffness tailoring |
| spellingShingle | Luis H. Olivas-Alanis Antonio Abraham Fraga-Martínez Erika García-López Omar Lopez-Botello Elisa Vazquez-Lepe Enrique Cuan-Urquizo Ciro A. Rodriguez Mechanical Properties of AISI 316L Lattice Structures via Laser Powder Bed Fusion as a Function of Unit Cell Features Materials additive manufacturing laser powder bed fusion cellular materials stiffness tailoring |
| title | Mechanical Properties of AISI 316L Lattice Structures via Laser Powder Bed Fusion as a Function of Unit Cell Features |
| title_full | Mechanical Properties of AISI 316L Lattice Structures via Laser Powder Bed Fusion as a Function of Unit Cell Features |
| title_fullStr | Mechanical Properties of AISI 316L Lattice Structures via Laser Powder Bed Fusion as a Function of Unit Cell Features |
| title_full_unstemmed | Mechanical Properties of AISI 316L Lattice Structures via Laser Powder Bed Fusion as a Function of Unit Cell Features |
| title_short | Mechanical Properties of AISI 316L Lattice Structures via Laser Powder Bed Fusion as a Function of Unit Cell Features |
| title_sort | mechanical properties of aisi 316l lattice structures via laser powder bed fusion as a function of unit cell features |
| topic | additive manufacturing laser powder bed fusion cellular materials stiffness tailoring |
| url | https://www.mdpi.com/1996-1944/16/3/1025 |
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