| Title: | The influence of the ratio of circumference to cross-sectional area of tensile bars on the fatigue life of additive manufactured AISI 316L steel |
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| Authors: | ID Ferlič, Luka (Author)
ID Jerenec, Filip (Author)
ID Šercer, Mario (Author)
ID Drstvenšek, Igor (Author)
ID Gubeljak, Nenad (Author) |
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| Files: |  metals-14-01246-v2.pdf (33,45 MB)
MD5: 4180100B6BDFB43B3E79EBEA48E1C43A
 https://www.mdpi.com/2075-4701/14/11/1246
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FS - Faculty of Mechanical Engineering
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| Abstract: | The static and dynamic loading capacities of components depend on the stress level to which the material is exposed. The fatigue behavior of materials manufactured using additive technology is accompanied by a pronounced scatter between the number of cycles at the same stress level, which is significantly greater than the scatter from a material with the same chemical composition, e.g., AISI 316L, but produced by rolling or forging. An important reason lies in the fact that fatigue cracks are initiated almost always below the material surface of the loaded specimen. Thus, in the article, assuming that a crack will always initiate below the surface, we analyzed the fatigue behavior of specimens with the same bearing cross section but with a different number of bearing rods. With a larger number of rods, the circumference around the supporting part of the rods was 1.73 times larger. Thus, experimental fatigue of specimens with different sizes showed that the dynamic loading capacity of components with a smaller number of bars is significantly greater and can be monitored by individual stress levels. Although there are no significant differences in loading capacity under static and low-cycle loading of materials manufactured with additive technologies, in high-cycle fatigue it has been shown that the ratio between the circumference and the loading cross section of tensile-loaded rods plays an important role in the lifetime. This finding is important for setting a strategy for manufacturing components with additive technologies. It shows that a better dynamic loading capacity can be obtained with a larger loading cross section. |
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| Keywords: | AISI 316L stainless steel, additive manufacturing, FEM, high-cycle fatigue, fractography analysis |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 20.09.2024 |
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| Article acceptance date: | 24.10.2024 |
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| Publication date: | 02.11.2024 |
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| Publisher: | MDPI |
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| Year of publishing: | 2024 |
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| Number of pages: | 28 str. |
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| Numbering: | Vol. 14, iss. 11, [article no.] 1246 |
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| PID: | 20.500.12556/DKUM-91178  |
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| UDC: | 620.178.3 |
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| ISSN on article: | 2075-4701 |
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| COBISS.SI-ID: | 214295555 |
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| DOI: | 10.3390/met14111246 |
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| Copyright: | © 2024 by the authors |
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| Publication date in DKUM: | 25.11.2024 |
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| Views: | 191 |
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| Downloads: | 32 |
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| Metadata: |    |
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| Categories: | Misc.
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