Manco, Emanuele (2023) Enhancing Fatigue Performance of Additively Manufactured Ti6Al4V Components through tool-less treatments: Chemical Machining and Laser Polishing. [Tesi di dottorato]
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| Tipologia del documento: | Tesi di dottorato |
|---|---|
| Lingua: | English |
| Titolo: | Enhancing Fatigue Performance of Additively Manufactured Ti6Al4V Components through tool-less treatments: Chemical Machining and Laser Polishing |
| Autori: | Autore Email Manco, Emanuele emanuele.manco95@gmail.com |
| Data: | 12 Dicembre 2023 |
| Numero di pagine: | 69 |
| Istituzione: | Università degli Studi di Napoli Federico II |
| Dipartimento: | Ingegneria Chimica, dei Materiali e della Produzione Industriale |
| Dottorato: | Ingegneria dei prodotti e dei processi industriali |
| Ciclo di dottorato: | 36 |
| Coordinatore del Corso di dottorato: | nome email D'Anna, Andrea andrea.danna@unina.it |
| Tutor: | nome email Squillace, Antonino [non definito] |
| Data: | 12 Dicembre 2023 |
| Numero di pagine: | 69 |
| Parole chiave: | Surface treatments, laser polishing, chemical machining, titanium, additive manufacturing, fatigue testing |
| Settori scientifico-disciplinari del MIUR: | Area 09 - Ingegneria industriale e dell'informazione > ING-IND/16 - Tecnologie e sistemi di lavorazione |
| Depositato il: | 08 Gen 2024 10:32 |
| Ultima modifica: | 10 Mar 2026 14:30 |
| URI: | http://www.fedoa.unina.it/id/eprint/15650 |
Abstract
Additive manufacturing (AM) processes, while revolutionary, encounter various hurdles, for example, metals processed via AM technologies are prone to internal defects, leading to suboptimal mechanical properties. Surface quality poses a considerable challenge to the stable implementation of AM. High surface roughness, particularly prevalent in AM-processed metals, compromises fatigue behavior, tribological properties and corrosion resistance properties. Additionally, surface roughness values vary significantly depending on the specific AM technology employed. Many articles in the literature compare the fatigue properties of additively manufactured as-built samples to additively manufactured turned samples to emphasize the role of surface quality. While these comparisons provide a valuable benchmark, it's important to note that turning, although effective in achieving low roughness values, may not align with the design flexibility offered by additive manufacturing. Consequently, there is a growing interest in exploring tool-less surface treatments for enhancing surface quality in additive manufacturing. While some studies exist, they often focus on simple geometries and lack evaluation of their impact on fatigue properties. For this research, the rotating beam fatigue testing method has been preferred over any other fatigue testing method because during tests, the most stressed points are always on the surface in order to highlight the effectiveness of surface treatments. This work aims to develop, investigate and analyze tool-less surface treatments (chemical machining and laser polishing) that can enhance the surface quality of additively manufactured Ti6Al4V and validate the influence of the treatment in terms of fatigue properties in the parts.
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