Study of Additive Manufacturing Intrinsic Defects on Fatigue Life of Ti-6Al-4V
The present work presents a new approach to studying the structural integrity of a Ti-6Al-4V alloy obtained by Selective Laser Melting (SLM). This approach is based on the intrinsic addictive manufacturing defects analysis obtained by nanotomography, the experimental S-N curve, and the small crack g...
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MDPI AG
2025-05-01
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| author | Teresa Morgado João Alves António Pereira Manuel Pereira Rui F. Martins |
| author_facet | Teresa Morgado João Alves António Pereira Manuel Pereira Rui F. Martins |
| author_sort | Teresa Morgado |
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| description | The present work presents a new approach to studying the structural integrity of a Ti-6Al-4V alloy obtained by Selective Laser Melting (SLM). This approach is based on the intrinsic addictive manufacturing defects analysis obtained by nanotomography, the experimental S-N curve, and the small crack growth Murakami and Endo model. Also, two counting methods of 3D manufacturing intrinsic defects were considered. The simulation of S-N curves and the small crack propagation curves were successfully obtained. New models for predicted fatigue limit were developed, one using the (3D) variable area of the defects observed as the total area and the other using the total project area. The 3D total surface area counting method presents more conservative values on crack propagation studies, so it is recommended for integrity studies of Ti6Al4V alloy obtained by SLM. |
| format | Article |
| id | doaj-art-e937500330d04148b549bf408ff6babe |
| institution | OA Journals |
| issn | 2673-4591 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
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| series | Engineering Proceedings |
| spelling | doaj-art-e937500330d04148b549bf408ff6babe2025-08-20T02:21:06ZengMDPI AGEngineering Proceedings2673-45912025-05-0190110710.3390/engproc2025090107Study of Additive Manufacturing Intrinsic Defects on Fatigue Life of Ti-6Al-4VTeresa Morgado0João Alves1António Pereira2Manuel Pereira3Rui F. Martins4UnIRE—Unit for Innovation and Research in Engineering, ISEL—Lisbon School of Engineering of Polytechnic University of Lisbon, 1959-007 Lisboa, PortugalUnIRE—Unit for Innovation and Research in Engineering, ISEL—Lisbon School of Engineering of Polytechnic University of Lisbon, 1959-007 Lisboa, PortugalCDRsp & ESTG—Centre for Rapid and Sustainable Product Development & School of Technology and Management of Polytechnic University of Leiria, 2430-028 Leiria, PortugalCERENA—Centre of Natural Resources and Environment, Instituto Superior Técnico, Lisbon University, 2744-016 Lisboa, PortugalUNIDEMI—Research & Development Unit in Mechanical and Industrial Engineering, Department of Mechanical and Industrial Engineering, FCT NOVA—Faculty of Science and Technology, NOVA University of Lisbon, 2829-516 Almada, PortugalThe present work presents a new approach to studying the structural integrity of a Ti-6Al-4V alloy obtained by Selective Laser Melting (SLM). This approach is based on the intrinsic addictive manufacturing defects analysis obtained by nanotomography, the experimental S-N curve, and the small crack growth Murakami and Endo model. Also, two counting methods of 3D manufacturing intrinsic defects were considered. The simulation of S-N curves and the small crack propagation curves were successfully obtained. New models for predicted fatigue limit were developed, one using the (3D) variable area of the defects observed as the total area and the other using the total project area. The 3D total surface area counting method presents more conservative values on crack propagation studies, so it is recommended for integrity studies of Ti6Al4V alloy obtained by SLM.https://www.mdpi.com/2673-4591/90/1/107intrinsic defectstomographyTi-6Al-4Vadditive manufacturing |
| spellingShingle | Teresa Morgado João Alves António Pereira Manuel Pereira Rui F. Martins Study of Additive Manufacturing Intrinsic Defects on Fatigue Life of Ti-6Al-4V Engineering Proceedings intrinsic defects tomography Ti-6Al-4V additive manufacturing |
| title | Study of Additive Manufacturing Intrinsic Defects on Fatigue Life of Ti-6Al-4V |
| title_full | Study of Additive Manufacturing Intrinsic Defects on Fatigue Life of Ti-6Al-4V |
| title_fullStr | Study of Additive Manufacturing Intrinsic Defects on Fatigue Life of Ti-6Al-4V |
| title_full_unstemmed | Study of Additive Manufacturing Intrinsic Defects on Fatigue Life of Ti-6Al-4V |
| title_short | Study of Additive Manufacturing Intrinsic Defects on Fatigue Life of Ti-6Al-4V |
| title_sort | study of additive manufacturing intrinsic defects on fatigue life of ti 6al 4v |
| topic | intrinsic defects tomography Ti-6Al-4V additive manufacturing |
| url | https://www.mdpi.com/2673-4591/90/1/107 |
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